7 #include "TFitResultPtr.h"
8 #include "TFitResult.h"
10 #include "AliMCParticle.h"
12 #include "AliAnalysisTask.h"
13 #include "AliAnalysisManager.h"
15 #include "AliESDEvent.h"
16 #include "AliMCEvent.h"
17 #include "AliESDInputHandler.h"
18 #include "AliInputEventHandler.h"
20 #include "AliVVertex.h"
21 #include "AliAnalysisFilter.h"
23 #include "AliPIDCombined.h"
24 #include "AliPIDResponse.h"
25 #include "AliTPCPIDResponse.h"
27 #include "AliAnalysisTaskPID.h"
30 This task collects PID output from different detectors.
31 Only tracks fulfilling some standard quality cuts are taken into account.
32 At the moment, only data from TPC and TOF is collected. But in future,
33 data from e.g. HMPID is also foreseen.
35 Contact: bhess@cern.ch
38 ClassImp(AliAnalysisTaskPID)
40 const Int_t AliAnalysisTaskPID::fgkNumJetAxes = 3; // Number of additional axes for jets
41 const Double_t AliAnalysisTaskPID::fgkEpsilon = 1e-8; // Double_t threshold above zero
42 const Int_t AliAnalysisTaskPID::fgkMaxNumGenEntries = 500; // Maximum number of generated detector responses per track and delta(Prime) and associated species
44 const Double_t AliAnalysisTaskPID::fgkOneOverSqrt2 = 0.707106781186547462; // = 1. / TMath::Sqrt2();
46 const Double_t AliAnalysisTaskPID::fgkSigmaReferenceForTransitionPars = 0.05; // Reference sigma chosen to calculate transition
48 //________________________________________________________________________
49 AliAnalysisTaskPID::AliAnalysisTaskPID()
50 : AliAnalysisTaskPIDV0base()
51 , fPIDcombined(new AliPIDCombined())
52 , fInputFromOtherTask(kFALSE)
54 , fDoEfficiency(kTRUE)
55 , fDoPtResolution(kTRUE)
56 , fStoreCentralityPercentile(kFALSE)
57 , fStoreAdditionalJetInformation(kFALSE)
58 , fTakeIntoAccountMuons(kFALSE)
62 , fTPCDefaultPriors(kFALSE)
63 , fUseMCidForGeneration(kTRUE)
64 , fUseConvolutedGaus(kFALSE)
65 , fkConvolutedGausNPar(3)
66 , fAccuracyNonGaussianTail(1e-8)
67 , fkDeltaPrimeLowLimit(0.02)
68 , fkDeltaPrimeUpLimit(40.0)
69 , fConvolutedGausDeltaPrime(0x0)
73 , fDoAnySystematicStudiesOnTheExpectedSignal(kFALSE)
74 , fSystematicScalingSplinesThreshold(50.)
75 , fSystematicScalingSplinesBelowThreshold(1.0)
76 , fSystematicScalingSplinesAboveThreshold(1.0)
77 , fSystematicScalingEtaCorrectionMomentumThr(0.35)
78 , fSystematicScalingEtaCorrectionLowMomenta(1.0)
79 , fSystematicScalingEtaCorrectionHighMomenta(1.0)
80 , fSystematicScalingEtaSigmaParaThreshold(250.)
81 , fSystematicScalingEtaSigmaParaBelowThreshold(1.0)
82 , fSystematicScalingEtaSigmaParaAboveThreshold(1.0)
83 , fSystematicScalingMultCorrection(1.0)
84 , fCentralityEstimator("V0M")
91 , fGenRespElDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
92 , fGenRespElDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
93 , fGenRespElDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
94 , fGenRespElDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
95 , fGenRespKaDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
96 , fGenRespKaDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
97 , fGenRespKaDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
98 , fGenRespKaDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
99 , fGenRespPiDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
100 , fGenRespPiDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
101 , fGenRespPiDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
102 , fGenRespPiDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
103 , fGenRespMuDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
104 , fGenRespMuDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
105 , fGenRespMuDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
106 , fGenRespMuDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
107 , fGenRespPrDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
108 , fGenRespPrDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
109 , fGenRespPrDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
110 , fGenRespPrDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
112 , fGenRespElDeltaEl(new Double_t[fgkMaxNumGenEntries])
113 , fGenRespElDeltaKa(new Double_t[fgkMaxNumGenEntries])
114 , fGenRespElDeltaPi(new Double_t[fgkMaxNumGenEntries])
115 , fGenRespElDeltaPr(new Double_t[fgkMaxNumGenEntries])
116 , fGenRespKaDeltaEl(new Double_t[fgkMaxNumGenEntries])
117 , fGenRespKaDeltaKa(new Double_t[fgkMaxNumGenEntries])
118 , fGenRespKaDeltaPi(new Double_t[fgkMaxNumGenEntries])
119 , fGenRespKaDeltaPr(new Double_t[fgkMaxNumGenEntries])
120 , fGenRespPiDeltaEl(new Double_t[fgkMaxNumGenEntries])
121 , fGenRespPiDeltaKa(new Double_t[fgkMaxNumGenEntries])
122 , fGenRespPiDeltaPi(new Double_t[fgkMaxNumGenEntries])
123 , fGenRespPiDeltaPr(new Double_t[fgkMaxNumGenEntries])
124 , fGenRespMuDeltaEl(new Double_t[fgkMaxNumGenEntries])
125 , fGenRespMuDeltaKa(new Double_t[fgkMaxNumGenEntries])
126 , fGenRespMuDeltaPi(new Double_t[fgkMaxNumGenEntries])
127 , fGenRespMuDeltaPr(new Double_t[fgkMaxNumGenEntries])
128 , fGenRespPrDeltaEl(new Double_t[fgkMaxNumGenEntries])
129 , fGenRespPrDeltaKa(new Double_t[fgkMaxNumGenEntries])
130 , fGenRespPrDeltaPi(new Double_t[fgkMaxNumGenEntries])
131 , fGenRespPrDeltaPr(new Double_t[fgkMaxNumGenEntries])
133 , fhEventsProcessed(0x0)
134 , fhEventsTriggerSel(0x0)
135 , fhEventsTriggerSelVtxCut(0x0)
136 , fhSkippedTracksForSignalGeneration(0x0)
137 , fhMCgeneratedYieldsPrimaries(0x0)
143 , fOutputContainer(0x0)
144 , fPtResolutionContainer(0x0)
146 // default Constructor
148 AliLog::SetClassDebugLevel("AliAnalysisTaskPID", AliLog::kInfo);
150 fConvolutedGausDeltaPrime = new TF1("convolutedGausDeltaPrime", this, &AliAnalysisTaskPID::ConvolutedGaus,
151 fkDeltaPrimeLowLimit, fkDeltaPrimeUpLimit,
152 fkConvolutedGausNPar, "AliAnalysisTaskPID", "ConvolutedGaus");
154 // Set some arbitrary parameteres, such that the function call will not crash
155 // (although it should not be called with these parameters...)
156 fConvolutedGausDeltaPrime->SetParameter(0, 0);
157 fConvolutedGausDeltaPrime->SetParameter(1, 1);
158 fConvolutedGausDeltaPrime->SetParameter(2, 2);
161 // Initialisation of translation parameters is time consuming.
162 // Therefore, default values will only be initialised if they are really needed.
163 // Otherwise, it is left to the user to set the parameter properly.
164 fConvolutedGaussTransitionPars[0] = -999;
165 fConvolutedGaussTransitionPars[1] = -999;
166 fConvolutedGaussTransitionPars[2] = -999;
169 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
170 fFractionHists[i] = 0x0;
171 fFractionSysErrorHists[i] = 0x0;
173 fPtResolution[i] = 0x0;
177 //________________________________________________________________________
178 AliAnalysisTaskPID::AliAnalysisTaskPID(const char *name)
179 : AliAnalysisTaskPIDV0base(name)
180 , fPIDcombined(new AliPIDCombined())
181 , fInputFromOtherTask(kFALSE)
183 , fDoEfficiency(kTRUE)
184 , fDoPtResolution(kTRUE)
185 , fStoreCentralityPercentile(kFALSE)
186 , fStoreAdditionalJetInformation(kFALSE)
187 , fTakeIntoAccountMuons(kFALSE)
191 , fTPCDefaultPriors(kFALSE)
192 , fUseMCidForGeneration(kTRUE)
193 , fUseConvolutedGaus(kFALSE)
194 , fkConvolutedGausNPar(3)
195 , fAccuracyNonGaussianTail(1e-8)
196 , fkDeltaPrimeLowLimit(0.02)
197 , fkDeltaPrimeUpLimit(40.0)
198 , fConvolutedGausDeltaPrime(0x0)
202 , fDoAnySystematicStudiesOnTheExpectedSignal(kFALSE)
203 , fSystematicScalingSplinesThreshold(50.)
204 , fSystematicScalingSplinesBelowThreshold(1.0)
205 , fSystematicScalingSplinesAboveThreshold(1.0)
206 , fSystematicScalingEtaCorrectionMomentumThr(0.35)
207 , fSystematicScalingEtaCorrectionLowMomenta(1.0)
208 , fSystematicScalingEtaCorrectionHighMomenta(1.0)
209 , fSystematicScalingEtaSigmaParaThreshold(250.)
210 , fSystematicScalingEtaSigmaParaBelowThreshold(1.0)
211 , fSystematicScalingEtaSigmaParaAboveThreshold(1.0)
212 , fSystematicScalingMultCorrection(1.0)
213 , fCentralityEstimator("V0M")
220 , fGenRespElDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
221 , fGenRespElDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
222 , fGenRespElDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
223 , fGenRespElDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
224 , fGenRespKaDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
225 , fGenRespKaDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
226 , fGenRespKaDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
227 , fGenRespKaDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
228 , fGenRespPiDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
229 , fGenRespPiDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
230 , fGenRespPiDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
231 , fGenRespPiDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
232 , fGenRespMuDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
233 , fGenRespMuDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
234 , fGenRespMuDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
235 , fGenRespMuDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
236 , fGenRespPrDeltaPrimeEl(new Double_t[fgkMaxNumGenEntries])
237 , fGenRespPrDeltaPrimeKa(new Double_t[fgkMaxNumGenEntries])
238 , fGenRespPrDeltaPrimePi(new Double_t[fgkMaxNumGenEntries])
239 , fGenRespPrDeltaPrimePr(new Double_t[fgkMaxNumGenEntries])
241 , fGenRespElDeltaEl(new Double_t[fgkMaxNumGenEntries])
242 , fGenRespElDeltaKa(new Double_t[fgkMaxNumGenEntries])
243 , fGenRespElDeltaPi(new Double_t[fgkMaxNumGenEntries])
244 , fGenRespElDeltaPr(new Double_t[fgkMaxNumGenEntries])
245 , fGenRespKaDeltaEl(new Double_t[fgkMaxNumGenEntries])
246 , fGenRespKaDeltaKa(new Double_t[fgkMaxNumGenEntries])
247 , fGenRespKaDeltaPi(new Double_t[fgkMaxNumGenEntries])
248 , fGenRespKaDeltaPr(new Double_t[fgkMaxNumGenEntries])
249 , fGenRespPiDeltaEl(new Double_t[fgkMaxNumGenEntries])
250 , fGenRespPiDeltaKa(new Double_t[fgkMaxNumGenEntries])
251 , fGenRespPiDeltaPi(new Double_t[fgkMaxNumGenEntries])
252 , fGenRespPiDeltaPr(new Double_t[fgkMaxNumGenEntries])
253 , fGenRespMuDeltaEl(new Double_t[fgkMaxNumGenEntries])
254 , fGenRespMuDeltaKa(new Double_t[fgkMaxNumGenEntries])
255 , fGenRespMuDeltaPi(new Double_t[fgkMaxNumGenEntries])
256 , fGenRespMuDeltaPr(new Double_t[fgkMaxNumGenEntries])
257 , fGenRespPrDeltaEl(new Double_t[fgkMaxNumGenEntries])
258 , fGenRespPrDeltaKa(new Double_t[fgkMaxNumGenEntries])
259 , fGenRespPrDeltaPi(new Double_t[fgkMaxNumGenEntries])
260 , fGenRespPrDeltaPr(new Double_t[fgkMaxNumGenEntries])
262 , fhEventsProcessed(0x0)
263 , fhEventsTriggerSel(0x0)
264 , fhEventsTriggerSelVtxCut(0x0)
265 , fhSkippedTracksForSignalGeneration(0x0)
266 , fhMCgeneratedYieldsPrimaries(0x0)
272 , fOutputContainer(0x0)
273 , fPtResolutionContainer(0x0)
277 AliLog::SetClassDebugLevel("AliAnalysisTaskPID", AliLog::kInfo);
279 fConvolutedGausDeltaPrime = new TF1("convolutedGausDeltaPrime", this, &AliAnalysisTaskPID::ConvolutedGaus,
280 fkDeltaPrimeLowLimit, fkDeltaPrimeUpLimit,
281 fkConvolutedGausNPar, "AliAnalysisTaskPID", "ConvolutedGaus");
283 // Set some arbitrary parameteres, such that the function call will not crash
284 // (although it should not be called with these parameters...)
285 fConvolutedGausDeltaPrime->SetParameter(0, 0);
286 fConvolutedGausDeltaPrime->SetParameter(1, 1);
287 fConvolutedGausDeltaPrime->SetParameter(2, 2);
290 // Initialisation of translation parameters is time consuming.
291 // Therefore, default values will only be initialised if they are really needed.
292 // Otherwise, it is left to the user to set the parameter properly.
293 fConvolutedGaussTransitionPars[0] = -999;
294 fConvolutedGaussTransitionPars[1] = -999;
295 fConvolutedGaussTransitionPars[2] = -999;
298 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
299 fFractionHists[i] = 0x0;
300 fFractionSysErrorHists[i] = 0x0;
302 fPtResolution[i] = 0x0;
305 // Define input and output slots here
306 // Input slot #0 works with a TChain
307 DefineInput(0, TChain::Class());
309 DefineOutput(1, TObjArray::Class());
311 DefineOutput(2, AliCFContainer::Class());
313 DefineOutput(3, TObjArray::Class());
317 //________________________________________________________________________
318 AliAnalysisTaskPID::~AliAnalysisTaskPID()
322 CleanupParticleFractionHistos();
324 delete fOutputContainer;
325 fOutputContainer = 0x0;
327 delete fPtResolutionContainer;
328 fPtResolutionContainer = 0x0;
330 delete fConvolutedGausDeltaPrime;
331 fConvolutedGausDeltaPrime = 0x0;
333 delete [] fGenRespElDeltaPrimeEl;
334 delete [] fGenRespElDeltaPrimeKa;
335 delete [] fGenRespElDeltaPrimePi;
336 delete [] fGenRespElDeltaPrimePr;
338 fGenRespElDeltaPrimeEl = 0x0;
339 fGenRespElDeltaPrimeKa = 0x0;
340 fGenRespElDeltaPrimePi = 0x0;
341 fGenRespElDeltaPrimePr = 0x0;
343 delete [] fGenRespKaDeltaPrimeEl;
344 delete [] fGenRespKaDeltaPrimeKa;
345 delete [] fGenRespKaDeltaPrimePi;
346 delete [] fGenRespKaDeltaPrimePr;
348 fGenRespKaDeltaPrimeEl = 0x0;
349 fGenRespKaDeltaPrimeKa = 0x0;
350 fGenRespKaDeltaPrimePi = 0x0;
351 fGenRespKaDeltaPrimePr = 0x0;
353 delete [] fGenRespPiDeltaPrimeEl;
354 delete [] fGenRespPiDeltaPrimeKa;
355 delete [] fGenRespPiDeltaPrimePi;
356 delete [] fGenRespPiDeltaPrimePr;
358 fGenRespPiDeltaPrimeEl = 0x0;
359 fGenRespPiDeltaPrimeKa = 0x0;
360 fGenRespPiDeltaPrimePi = 0x0;
361 fGenRespPiDeltaPrimePr = 0x0;
363 delete [] fGenRespMuDeltaPrimeEl;
364 delete [] fGenRespMuDeltaPrimeKa;
365 delete [] fGenRespMuDeltaPrimePi;
366 delete [] fGenRespMuDeltaPrimePr;
368 fGenRespMuDeltaPrimeEl = 0x0;
369 fGenRespMuDeltaPrimeKa = 0x0;
370 fGenRespMuDeltaPrimePi = 0x0;
371 fGenRespMuDeltaPrimePr = 0x0;
373 delete [] fGenRespPrDeltaPrimeEl;
374 delete [] fGenRespPrDeltaPrimeKa;
375 delete [] fGenRespPrDeltaPrimePi;
376 delete [] fGenRespPrDeltaPrimePr;
378 fGenRespPrDeltaPrimeEl = 0x0;
379 fGenRespPrDeltaPrimeKa = 0x0;
380 fGenRespPrDeltaPrimePi = 0x0;
381 fGenRespPrDeltaPrimePr = 0x0;
383 /*OLD with deltaSpecies
384 delete [] fGenRespElDeltaEl;
385 delete [] fGenRespElDeltaKa;
386 delete [] fGenRespElDeltaPi;
387 delete [] fGenRespElDeltaPr;
389 fGenRespElDeltaEl = 0x0;
390 fGenRespElDeltaKa = 0x0;
391 fGenRespElDeltaPi = 0x0;
392 fGenRespElDeltaPr = 0x0;
394 delete [] fGenRespKaDeltaEl;
395 delete [] fGenRespKaDeltaKa;
396 delete [] fGenRespKaDeltaPi;
397 delete [] fGenRespKaDeltaPr;
399 fGenRespKaDeltaEl = 0x0;
400 fGenRespKaDeltaKa = 0x0;
401 fGenRespKaDeltaPi = 0x0;
402 fGenRespKaDeltaPr = 0x0;
404 delete [] fGenRespPiDeltaEl;
405 delete [] fGenRespPiDeltaKa;
406 delete [] fGenRespPiDeltaPi;
407 delete [] fGenRespPiDeltaPr;
409 fGenRespPiDeltaEl = 0x0;
410 fGenRespPiDeltaKa = 0x0;
411 fGenRespPiDeltaPi = 0x0;
412 fGenRespPiDeltaPr = 0x0;
414 delete [] fGenRespMuDeltaEl;
415 delete [] fGenRespMuDeltaKa;
416 delete [] fGenRespMuDeltaPi;
417 delete [] fGenRespMuDeltaPr;
419 fGenRespMuDeltaEl = 0x0;
420 fGenRespMuDeltaKa = 0x0;
421 fGenRespMuDeltaPi = 0x0;
422 fGenRespMuDeltaPr = 0x0;
424 delete [] fGenRespPrDeltaEl;
425 delete [] fGenRespPrDeltaKa;
426 delete [] fGenRespPrDeltaPi;
427 delete [] fGenRespPrDeltaPr;
429 fGenRespPrDeltaEl = 0x0;
430 fGenRespPrDeltaKa = 0x0;
431 fGenRespPrDeltaPi = 0x0;
432 fGenRespPrDeltaPr = 0x0;
437 //________________________________________________________________________
438 void AliAnalysisTaskPID::SetUpPIDcombined()
440 // Initialise the PIDcombined object
446 printf("File: %s, Line: %d: SetUpPIDcombined\n", (char*)__FILE__, __LINE__);
449 AliFatal("No PIDcombined object!\n");
453 fPIDcombined->SetSelectedSpecies(AliPID::kSPECIESC);
454 fPIDcombined->SetEnablePriors(fUsePriors);
456 if (fTPCDefaultPriors)
457 fPIDcombined->SetDefaultTPCPriors();
459 //TODO use individual priors...
461 // Change detector mask (TPC,TOF,ITS)
462 Int_t detectorMask = AliPIDResponse::kDetTPC;
464 // Reject mismatch mask - mismatch only relevant for TOF at the moment - other detectors do not use it
465 Int_t rejectMismatchMask = AliPIDResponse::kDetTPC;
469 detectorMask = detectorMask | AliPIDResponse::kDetITS;
470 rejectMismatchMask = rejectMismatchMask | AliPIDResponse::kDetITS;
473 detectorMask = detectorMask | AliPIDResponse::kDetTOF;
474 rejectMismatchMask = rejectMismatchMask | AliPIDResponse::kDetTOF;
477 fPIDcombined->SetDetectorMask(detectorMask);
478 fPIDcombined->SetRejectMismatchMask(rejectMismatchMask);
481 printf("File: %s, Line: %d: SetUpPIDcombined done\n", (char*)__FILE__, __LINE__);
485 //________________________________________________________________________
486 void AliAnalysisTaskPID::UserCreateOutputObjects()
492 printf("File: %s, Line: %d: UserCreateOutputObjects\n", (char*)__FILE__, __LINE__);
497 AliAnalysisManager* man = AliAnalysisManager::GetAnalysisManager();
498 AliInputEventHandler* inputHandler = dynamic_cast<AliInputEventHandler*>(man->GetInputEventHandler());
501 AliFatal("Input handler needed");
503 // PID response object
504 fPIDResponse = inputHandler->GetPIDResponse();
506 AliFatal("PIDResponse object was not created");
510 printf("File: %s, Line: %d: UserCreateOutputObjects -> Retrieved PIDresponse object\n", (char*)__FILE__, __LINE__);
515 printf("File: %s, Line: %d: UserCreateOutputObjects -> OpenFile(1) successful\n", (char*)__FILE__, __LINE__);
517 fOutputContainer = new TObjArray(1);
518 fOutputContainer->SetName(GetName());
519 fOutputContainer->SetOwner(kTRUE);
521 const Int_t nPtBins = 68;
522 Double_t binsPt[nPtBins+1] = {0. , 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45,
523 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95,
524 1.0, 1.1 , 1.2, 1.3 , 1.4, 1.5 , 1.6, 1.7 , 1.8, 1.9 ,
525 2.0, 2.2 , 2.4, 2.6 , 2.8, 3.0 , 3.2, 3.4 , 3.6, 3.8 ,
526 4.0, 4.5 , 5.0, 5.5 , 6.0, 6.5 , 7.0, 8.0 , 9.0, 10.0,
527 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 18.0, 20.0, 22.0, 24.0,
528 26.0, 28.0, 30.0, 32.0, 34.0, 36.0, 40.0, 45.0, 50.0 };
530 const Int_t nCentBins = 12;
531 //-1 for pp; 90-100 has huge electro-magnetic impurities
532 Double_t binsCent[nCentBins+1] = {-1, 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };
534 const Int_t nJetPtBins = 11;
535 Double_t binsJetPt[nJetPtBins+1] = {0, 2, 5, 10, 15, 20, 30, 40, 60, 80, 120, 200};
537 const Int_t nChargeBins = 2;
538 const Double_t binsCharge[nChargeBins+1] = { -1.0 - 1e-4, 0.0, 1.0 + 1e-4 };
540 const Int_t nBinsJets = kDataNumAxes;
541 const Int_t nBinsNoJets = nBinsJets - fgkNumJetAxes;
543 const Int_t nBins = fStoreAdditionalJetInformation ? nBinsJets : nBinsNoJets;
545 // deltaPrimeSpecies binning
546 const Int_t deltaPrimeNBins = 600;
547 Double_t deltaPrimeBins[deltaPrimeNBins + 1];
549 const Double_t fromLow = fkDeltaPrimeLowLimit;
550 const Double_t toHigh = fkDeltaPrimeUpLimit;
551 const Double_t factor = TMath::Power(toHigh/fromLow, 1./deltaPrimeNBins);
553 // Log binning for whole deltaPrime range
554 deltaPrimeBins[0] = fromLow;
555 for (Int_t i = 0 + 1; i <= deltaPrimeNBins; i++) {
556 deltaPrimeBins[i] = factor * deltaPrimeBins[i - 1];
559 const Int_t nMCPIDbins = 5;
560 const Double_t mcPIDmin = 0.;
561 const Double_t mcPIDmax = 5.;
563 const Int_t nSelSpeciesBins = 4;
564 const Double_t selSpeciesMin = 0.;
565 const Double_t selSpeciesMax = 4.;
567 const Int_t nZBins = 20;
568 const Double_t zMin = 0.;
569 const Double_t zMax = 1.;
571 const Int_t nXiBins = 70;
572 const Double_t xiMin = 0.;
573 const Double_t xiMax = 7.;
575 const Int_t nTOFpidInfoBins = kNumTOFpidInfoBins;
576 const Double_t tofPIDinfoMin = kNoTOFinfo;
577 const Double_t tofPIDinfoMax = kNoTOFinfo + kNumTOFpidInfoBins;
579 // MC PID, SelectSpecies, pT, deltaPrimeSpecies, centrality percentile, jet pT, z = track_pT/jet_pT, xi = log(1/z)
580 Int_t binsNoJets[nBinsNoJets] = { nMCPIDbins,
588 Int_t binsJets[nBinsJets] = { nMCPIDbins,
599 Int_t *bins = fStoreAdditionalJetInformation ? &binsJets[0] : &binsNoJets[0];
601 Double_t xminNoJets[nBinsNoJets] = { mcPIDmin,
609 Double_t xminJets[nBinsJets] = { mcPIDmin,
620 Double_t *xmin = fStoreAdditionalJetInformation? &xminJets[0] : &xminNoJets[0];
622 Double_t xmaxNoJets[nBinsNoJets] = { mcPIDmax,
625 deltaPrimeBins[deltaPrimeNBins],
627 binsCharge[nChargeBins],
630 Double_t xmaxJets[nBinsJets] = { mcPIDmax,
633 deltaPrimeBins[deltaPrimeNBins],
635 binsJetPt[nJetPtBins],
638 binsCharge[nChargeBins],
641 Double_t *xmax = fStoreAdditionalJetInformation? &xmaxJets[0] : &xmaxNoJets[0];
643 fConvolutedGausDeltaPrime->SetNpx(deltaPrimeNBins);
646 fhPIDdataAll = new THnSparseD("hPIDdataAll","", nBins, bins, xmin, xmax);
647 SetUpHist(fhPIDdataAll, binsPt, deltaPrimeBins, binsCent, binsJetPt);
648 fOutputContainer->Add(fhPIDdataAll);
651 // Generated histograms (so far, bins are the same as for primary THnSparse)
652 const Int_t nGenBins = fStoreAdditionalJetInformation ? nBinsJets : nBinsNoJets;
653 // MC PID, SelectSpecies, Pt, deltaPrimeSpecies, jet pT, z = track_pT/jet_pT, xi = log(1/z)
655 Int_t *genBins = fStoreAdditionalJetInformation ? &binsJets[0] : &binsNoJets[0];
656 Double_t *genXmin = fStoreAdditionalJetInformation? &xminJets[0] : &xminNoJets[0];
657 Double_t *genXmax = fStoreAdditionalJetInformation? &xmaxJets[0] : &xmaxNoJets[0];
660 fhGenEl = new THnSparseD("hGenEl", "", nGenBins, genBins, genXmin, genXmax);
661 SetUpGenHist(fhGenEl, binsPt, deltaPrimeBins, binsCent, binsJetPt);
662 fOutputContainer->Add(fhGenEl);
664 fhGenKa = new THnSparseD("hGenKa", "", nGenBins, genBins, genXmin, genXmax);
665 SetUpGenHist(fhGenKa, binsPt, deltaPrimeBins, binsCent, binsJetPt);
666 fOutputContainer->Add(fhGenKa);
668 fhGenPi = new THnSparseD("hGenPi", "", nGenBins, genBins, genXmin, genXmax);
669 SetUpGenHist(fhGenPi, binsPt, deltaPrimeBins, binsCent, binsJetPt);
670 fOutputContainer->Add(fhGenPi);
672 if (fTakeIntoAccountMuons) {
673 fhGenMu = new THnSparseD("hGenMu", "", nGenBins, genBins, genXmin, genXmax);
674 SetUpGenHist(fhGenMu, binsPt, deltaPrimeBins, binsCent, binsJetPt);
675 fOutputContainer->Add(fhGenMu);
678 fhGenPr = new THnSparseD("hGenPr", "", nGenBins, genBins, genXmin, genXmax);
679 SetUpGenHist(fhGenPr, binsPt, deltaPrimeBins, binsCent, binsJetPt);
680 fOutputContainer->Add(fhGenPr);
682 fhSkippedTracksForSignalGeneration = new TH2D("fhSkippedTracksForSignalGeneration",
683 "Number of tracks skipped for the signal generation;p_{T}^{gen} (GeV/c);TPC signal N",
684 nPtBins, binsPt, 161, -0.5, 160.5);
685 fhSkippedTracksForSignalGeneration->Sumw2();
686 fOutputContainer->Add(fhSkippedTracksForSignalGeneration);
690 fhEventsProcessed = new TH1D("fhEventsProcessed",
691 "Number of events passing trigger selection, vtx and zvtx cuts;Centrality percentile",
692 nCentBins, binsCent);
693 fhEventsProcessed->Sumw2();
694 fOutputContainer->Add(fhEventsProcessed);
696 fhEventsTriggerSelVtxCut = new TH1D("fhEventsTriggerSelVtxCut",
697 "Number of events passing trigger selection and vtx cut;Centrality percentile",
698 nCentBins, binsCent);
699 fhEventsTriggerSelVtxCut->Sumw2();
700 fOutputContainer->Add(fhEventsTriggerSelVtxCut);
702 fhEventsTriggerSel = new TH1D("fhEventsTriggerSel",
703 "Number of events passing trigger selection;Centrality percentile",
704 nCentBins, binsCent);
705 fOutputContainer->Add(fhEventsTriggerSel);
706 fhEventsTriggerSel->Sumw2();
709 // Generated yields within acceptance
710 const Int_t nBinsGenYields = fStoreAdditionalJetInformation ? kGenYieldNumAxes : kGenYieldNumAxes - 3;
711 Int_t genYieldsBins[kGenYieldNumAxes] = { nMCPIDbins, nPtBins, nCentBins, nJetPtBins, nZBins, nXiBins,
713 genYieldsBins[GetIndexOfChargeAxisGenYield()] = nChargeBins;
714 Double_t genYieldsXmin[kGenYieldNumAxes] = { mcPIDmin, binsPt[0], binsCent[0], binsJetPt[0], zMin, xiMin,
716 genYieldsXmin[GetIndexOfChargeAxisGenYield()] = binsCharge[0];
717 Double_t genYieldsXmax[kGenYieldNumAxes] = { mcPIDmax, binsPt[nPtBins], binsCent[nCentBins], binsJetPt[nJetPtBins], zMax, xiMax,
718 binsCharge[nChargeBins] };
719 genYieldsXmax[GetIndexOfChargeAxisGenYield()] = binsCharge[nChargeBins];
722 fhMCgeneratedYieldsPrimaries = new THnSparseD("fhMCgeneratedYieldsPrimaries",
723 "Generated yields w/o reco and cuts inside acceptance (physical primaries)",
724 nBinsGenYields, genYieldsBins, genYieldsXmin, genYieldsXmax);
725 SetUpGenYieldHist(fhMCgeneratedYieldsPrimaries, binsPt, binsCent, binsJetPt);
726 fOutputContainer->Add(fhMCgeneratedYieldsPrimaries);
729 // Container with several process steps (generated and reconstructed level with some variations)
734 printf("File: %s, Line: %d: UserCreateOutputObjects -> OpenFile(2) successful\n", (char*)__FILE__, __LINE__);
736 // Array for the number of bins in each dimension
737 // Dimensions: MC-ID, trackPt, trackEta, trackCharge, cenrality percentile, jetPt, z, xi TODO phi???
738 const Int_t nEffDims = fStoreAdditionalJetInformation ? kEffNumAxes : kEffNumAxes - 3; // Number of dimensions for the efficiency
740 const Int_t nMCIDbins = AliPID::kSPECIES;
741 Double_t binsMCID[nMCIDbins + 1];
743 for(Int_t i = 0; i <= nMCIDbins; i++) {
747 const Int_t nEtaBins = 18;
748 const Double_t binsEta[nEtaBins+1] = {-0.9, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3, -0.2, -0.1,
749 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 };
751 const Int_t nEffBins[kEffNumAxes] = { nMCIDbins, nPtBins, nEtaBins, nChargeBins, nCentBins, nJetPtBins, nZBins, nXiBins };
753 fContainerEff = new AliCFContainer("containerEff", "Reconstruction Efficiency x Acceptance x Resolution and Secondary Correction",
754 kNumSteps, nEffDims, nEffBins);
756 // Setting the bin limits
757 fContainerEff->SetBinLimits(kEffMCID, binsMCID);
758 fContainerEff->SetBinLimits(kEffTrackPt, binsPt);
759 fContainerEff->SetBinLimits(kEffTrackEta, binsEta);
760 fContainerEff->SetBinLimits(kEffTrackCharge, binsCharge);
761 fContainerEff->SetBinLimits(kEffCentrality, binsCent);
762 if (fStoreAdditionalJetInformation) {
763 fContainerEff->SetBinLimits(kEffJetPt, binsJetPt);
764 fContainerEff->SetBinLimits(kEffZ, zMin, zMax);
765 fContainerEff->SetBinLimits(kEffXi, xiMin, xiMax);
768 fContainerEff->SetVarTitle(kEffMCID,"MC ID");
769 fContainerEff->SetVarTitle(kEffTrackPt,"p_{T} (GeV/c)");
770 fContainerEff->SetVarTitle(kEffTrackEta,"#eta");
771 fContainerEff->SetVarTitle(kEffTrackCharge,"Charge (e_{0})");
772 fContainerEff->SetVarTitle(kEffCentrality, "Centrality Percentile");
773 if (fStoreAdditionalJetInformation) {
774 fContainerEff->SetVarTitle(kEffJetPt, "p_{T}^{jet} (GeV/c)");
775 fContainerEff->SetVarTitle(kEffZ, "z = p_{T}^{track} / p_{T}^{jet}");
776 fContainerEff->SetVarTitle(kEffXi, "#xi = ln(p_{T}^{jet} / p_{T}^{track})");
779 // Define clean MC sample
780 fContainerEff->SetStepTitle(kStepGenWithGenCuts, "Particle level, cuts on particle level");
781 // For Acceptance x Efficiency correction of primaries
782 fContainerEff->SetStepTitle(kStepRecWithGenCuts, "Detector level (rec) with cuts on particle level");
783 // For (pT) resolution correction
784 fContainerEff->SetStepTitle(kStepRecWithGenCutsMeasuredObs,
785 "Detector level (rec) with cuts on particle level with measured observables");
786 // For secondary correction
787 fContainerEff->SetStepTitle(kStepRecWithRecCutsMeasuredObs,
788 "Detector level, all cuts on detector level with measured observables");
789 fContainerEff->SetStepTitle(kStepRecWithRecCutsPrimaries,
790 "Detector level, all cuts on detector level, only MC primaries");
791 fContainerEff->SetStepTitle(kStepRecWithRecCutsMeasuredObsPrimaries,
792 "Detector level, all cuts on detector level with measured observables, only MC primaries");
793 fContainerEff->SetStepTitle(kStepRecWithRecCutsMeasuredObsStrangenessScaled,
794 "Detector level (strangeness scaled), all cuts on detector level with measured observables");
797 if (fDoPID || fDoEfficiency) {
799 fh2FFJetPtRec = new TH2D("fh2FFJetPtRec", "Number of reconstructed jets;Centrality Percentile;p_{T}^{jet} (GeV/c)",
800 nCentBins, binsCent, nJetPtBins, binsJetPt);
801 fh2FFJetPtRec->Sumw2();
802 fOutputContainer->Add(fh2FFJetPtRec);
803 fh2FFJetPtGen = new TH2D("fh2FFJetPtGen", "Number of generated jets;Centrality Percentile;p_{T}^{jet} (GeV/c)",
804 nCentBins, binsCent, nJetPtBins, binsJetPt);
805 fh2FFJetPtGen->Sumw2();
806 fOutputContainer->Add(fh2FFJetPtGen);
809 // Pythia information
810 fh1Xsec = new TProfile("fh1Xsec", "xsec from pyxsec.root", 1, 0, 1);
812 fh1Xsec->GetXaxis()->SetBinLabel(1, "<#sigma>");
813 fh1Trials = new TH1D("fh1Trials", "trials from pyxsec.root", 1, 0, 1);
815 fh1Trials->GetXaxis()->SetBinLabel(1, "#sum{ntrials}");
817 fOutputContainer->Add(fh1Xsec);
818 fOutputContainer->Add(fh1Trials);
820 if (fDoPtResolution) {
824 printf("File: %s, Line: %d: UserCreateOutputObjects -> OpenFile(3) successful\n", (char*)__FILE__, __LINE__);
826 fPtResolutionContainer = new TObjArray(1);
827 fPtResolutionContainer->SetName(Form("%s_PtResolution", GetName()));
828 fPtResolutionContainer->SetOwner(kTRUE);
830 const Int_t nPtBinsRes = 100;
831 Double_t pTbinsRes[nPtBinsRes + 1];
833 const Double_t fromLowPtRes = 0.15;
834 const Double_t toHighPtRes = 50.;
835 const Double_t factorPtRes = TMath::Power(toHighPtRes/fromLowPtRes, 1./nPtBinsRes);
836 // Log binning for whole pT range
837 pTbinsRes[0] = fromLowPtRes;
838 for (Int_t i = 0 + 1; i <= nPtBinsRes; i++) {
839 pTbinsRes[i] = factorPtRes * pTbinsRes[i - 1];
842 const Int_t nBinsPtResolution = kPtResNumAxes;
843 Int_t ptResolutionBins[kPtResNumAxes] = { nJetPtBins, nPtBinsRes, nPtBinsRes,
844 nChargeBins, nCentBins };
845 Double_t ptResolutionXmin[kPtResNumAxes] = { binsJetPt[0], pTbinsRes[0], pTbinsRes[0],
846 binsCharge[0], binsCent[0] };
847 Double_t ptResolutionXmax[kPtResNumAxes] = { binsJetPt[nJetPtBins], pTbinsRes[nPtBinsRes], pTbinsRes[nPtBinsRes],
848 binsCharge[nChargeBins], binsCent[nCentBins] };
850 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
851 fPtResolution[i] = new THnSparseD(Form("fPtResolution_%s", AliPID::ParticleShortName(i)),
852 Form("Pt resolution for primaries, %s", AliPID::ParticleLatexName(i)),
853 nBinsPtResolution, ptResolutionBins, ptResolutionXmin, ptResolutionXmax);
854 SetUpPtResHist(fPtResolution[i], pTbinsRes, binsJetPt, binsCent);
855 fPtResolutionContainer->Add(fPtResolution[i]);
860 printf("File: %s, Line: %d: UserCreateOutputObjects -> Posting output data\n", (char*)__FILE__, __LINE__);
862 PostData(1, fOutputContainer);
863 PostData(2, fContainerEff);
864 PostData(3, fPtResolutionContainer);
867 printf("File: %s, Line: %d: UserCreateOutputObjects -> Done\n", (char*)__FILE__, __LINE__);
871 //________________________________________________________________________
872 void AliAnalysisTaskPID::UserExec(Option_t *)
875 // Called for each event
878 printf("File: %s, Line: %d: UserExec\n", (char*)__FILE__, __LINE__);
880 // No processing of event, if input is fed in directly from another task
881 if (fInputFromOtherTask)
885 printf("File: %s, Line: %d: UserExec -> Processing started\n", (char*)__FILE__, __LINE__);
887 fEvent = dynamic_cast<AliVEvent*>(InputEvent());
889 Printf("ERROR: fEvent not available");
893 fMC = dynamic_cast<AliMCEvent*>(MCEvent());
895 if (!fPIDResponse || !fPIDcombined)
898 Double_t centralityPercentile = -1;
899 if (fStoreCentralityPercentile)
900 centralityPercentile = fEvent->GetCentrality()->GetCentralityPercentile(fCentralityEstimator.Data());
902 IncrementEventCounter(centralityPercentile, kTriggerSel);
904 // Check if vertex is ok, but don't apply cut on z position
905 if (!GetVertexIsOk(fEvent, kFALSE))
908 fESD = dynamic_cast<AliESDEvent*>(fEvent);
909 const AliVVertex* primaryVertex = fESD ? fESD->GetPrimaryVertexTracks() : fEvent->GetPrimaryVertex();
913 if(primaryVertex->GetNContributors() <= 0)
916 IncrementEventCounter(centralityPercentile, kTriggerSelAndVtxCut);
918 // Now check again, but also require z position to be in desired range
919 if (!GetVertexIsOk(fEvent, kTRUE))
922 IncrementEventCounter(centralityPercentile, kTriggerSelAndVtxCutAndZvtxCut);
924 Double_t magField = fEvent->GetMagneticField();
927 if (fDoPID || fDoEfficiency) {
928 for (Int_t iPart = 0; iPart < fMC->GetNumberOfTracks(); iPart++) {
929 AliMCParticle *mcPart = dynamic_cast<AliMCParticle*>(fMC->GetTrack(iPart));
934 // Define clean MC sample with corresponding particle level track cuts:
935 // - MC-track must be in desired eta range
936 // - MC-track must be physical primary
937 // - Species must be one of those in question (everything else goes to the overflow bin of mcID)
939 // Geometrie should be the same as on the reconstructed level -> By definition analysis within this eta interval
940 if (!IsInAcceptedEtaRange(TMath::Abs(mcPart->Eta()))) continue;
942 Int_t mcID = PDGtoMCID(mcPart->PdgCode());
944 // AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
945 Double_t chargeMC = mcPart->Charge() / 3.;
947 if (TMath::Abs(chargeMC) < 0.01)
948 continue; // Reject neutral particles (only relevant, if mcID is not used)
950 if (!fMC->IsPhysicalPrimary(iPart))
954 Double_t valuesGenYield[kGenYieldNumAxes] = { mcID, mcPart->Pt(), centralityPercentile, -1, -1, -1, -1 };
955 valuesGenYield[GetIndexOfChargeAxisGenYield()] = chargeMC;
957 fhMCgeneratedYieldsPrimaries->Fill(valuesGenYield);
962 Double_t valueEff[kEffNumAxes] = { mcID, mcPart->Pt(), mcPart->Eta(), chargeMC, centralityPercentile,
965 fContainerEff->Fill(valueEff, kStepGenWithGenCuts);
971 // Track loop to fill a Train spectrum
972 for (Int_t iTracks = 0; iTracks < fEvent->GetNumberOfTracks(); iTracks++) {
973 AliVTrack* track = dynamic_cast<AliVTrack*>(fEvent->GetTrack(iTracks));
975 Printf("ERROR: Could not retrieve track %d", iTracks);
980 // Apply detector level track cuts
981 Double_t dEdxTPC = fPIDResponse->IsTunedOnData() ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
985 if(fTrackFilter && !fTrackFilter->IsSelected(track))
988 if (GetUseTPCCutMIGeo()) {
989 if (!TPCCutMIGeo(track, fEvent))
992 else if (GetUseTPCnclCut()) {
993 if (!TPCnclCut(track))
998 if (!PhiPrimeCut(track, magField))
999 continue; // reject track
1002 Int_t pdg = 0; // = 0 indicates data for the moment
1003 AliMCParticle* mcTrack = 0x0;
1004 Int_t mcID = AliPID::kUnknown;
1008 label = track->GetLabel();
1013 mcTrack = dynamic_cast<AliMCParticle*>(fMC->GetTrack(TMath::Abs(label)));
1015 Printf("ERROR: Could not retrieve mcTrack with label %d for track %d", label, iTracks);
1019 pdg = mcTrack->PdgCode();
1020 mcID = PDGtoMCID(mcTrack->PdgCode());
1022 if (fDoEfficiency) {
1023 // For efficiency: Reconstructed track has survived all cuts on the detector level (excluding acceptance)
1024 // and has an associated MC track which is a physical primary and was generated inside the acceptance
1025 if (fMC->IsPhysicalPrimary(TMath::Abs(label)) &&
1026 IsInAcceptedEtaRange(TMath::Abs(mcTrack->Eta()))) {
1028 // AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
1029 Double_t value[kEffNumAxes] = { mcID, mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3., centralityPercentile,
1031 fContainerEff->Fill(value, kStepRecWithGenCuts);
1033 Double_t valueMeas[kEffNumAxes] = { mcID, track->Pt(), track->Eta(), track->Charge(), centralityPercentile,
1035 fContainerEff->Fill(valueMeas, kStepRecWithGenCutsMeasuredObs);
1040 // Only process tracks inside the desired eta window
1041 if (!IsInAcceptedEtaRange(TMath::Abs(track->Eta()))) continue;
1044 ProcessTrack(track, pdg, centralityPercentile, -1); // No jet information in this case -> Set jet pT to -1
1046 if (fDoPtResolution) {
1047 if (mcTrack && fMC->IsPhysicalPrimary(TMath::Abs(label))) {
1048 // AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
1049 Double_t valuePtRes[kPtResNumAxes] = { -1, mcTrack->Pt(), track->Pt(), mcTrack->Charge() / 3., centralityPercentile };
1050 fPtResolution[mcID]->Fill(valuePtRes);
1054 if (fDoEfficiency) {
1056 Double_t valueRecAllCuts[kEffNumAxes] = { mcID, track->Pt(), track->Eta(), track->Charge(), centralityPercentile,
1058 fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObs);
1060 Double_t weight = IsSecondaryWithStrangeMotherMC(fMC, TMath::Abs(label)) ?
1061 GetMCStrangenessFactorCMS(fMC, mcTrack) : 1.0;
1062 fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObsStrangenessScaled, weight);
1064 // AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
1065 Double_t valueGenAllCuts[kEffNumAxes] = { mcID, mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3.,
1066 centralityPercentile, -1, -1, -1 };
1067 if (fMC->IsPhysicalPrimary(TMath::Abs(label))) {
1068 fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObsPrimaries);
1069 fContainerEff->Fill(valueGenAllCuts, kStepRecWithRecCutsPrimaries);
1076 printf("File: %s, Line: %d: UserExec -> Processing done\n", (char*)__FILE__, __LINE__);
1081 printf("File: %s, Line: %d: UserExec -> Done\n", (char*)__FILE__, __LINE__);
1084 //________________________________________________________________________
1085 void AliAnalysisTaskPID::Terminate(const Option_t *)
1087 // Draw result to the screen
1088 // Called once at the end of the query
1092 //_____________________________________________________________________________
1093 void AliAnalysisTaskPID::CheckDoAnyStematicStudiesOnTheExpectedSignal()
1095 // Check whether at least one scale factor indicates the ussage of systematic studies
1096 // and set internal flag accordingly.
1098 fDoAnySystematicStudiesOnTheExpectedSignal = kFALSE;
1101 if ((TMath::Abs(fSystematicScalingSplinesBelowThreshold - 1.0) > fgkEpsilon) ||
1102 (TMath::Abs(fSystematicScalingSplinesAboveThreshold - 1.0) > fgkEpsilon)) {
1103 fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
1107 if ((TMath::Abs(fSystematicScalingEtaCorrectionLowMomenta - 1.0) > fgkEpsilon) ||
1108 (TMath::Abs(fSystematicScalingEtaCorrectionHighMomenta - 1.0) > fgkEpsilon)) {
1109 fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
1113 if ((TMath::Abs(fSystematicScalingEtaSigmaParaBelowThreshold - 1.0) > fgkEpsilon) ||
1114 (TMath::Abs(fSystematicScalingEtaSigmaParaAboveThreshold - 1.0) > fgkEpsilon)) {
1115 fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
1119 if (TMath::Abs(fSystematicScalingMultCorrection - 1.0) > fgkEpsilon) {
1120 fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
1126 //_____________________________________________________________________________
1127 Int_t AliAnalysisTaskPID::PDGtoMCID(Int_t pdg)
1129 // Returns the corresponding AliPID index to the given pdg code.
1130 // Returns AliPID::kUnkown if pdg belongs to a not considered species.
1132 Int_t absPDGcode = TMath::Abs(pdg);
1133 if (absPDGcode == 211) {//Pion
1134 return AliPID::kPion;
1136 else if (absPDGcode == 321) {//Kaon
1137 return AliPID::kKaon;
1139 else if (absPDGcode == 2212) {//Proton
1140 return AliPID::kProton;
1142 else if (absPDGcode == 11) {//Electron
1143 return AliPID::kElectron;
1145 else if (absPDGcode == 13) {//Muon
1146 return AliPID::kMuon;
1149 return AliPID::kUnknown;
1153 //_____________________________________________________________________________
1154 void AliAnalysisTaskPID::GetJetTrackObservables(Double_t trackPt, Double_t jetPt, Double_t& z, Double_t& xi)
1156 // Uses trackPt and jetPt to obtain z and xi.
1158 z = (jetPt > 0 && trackPt >= 0) ? (trackPt / jetPt) : -1;
1159 xi = (z > 0) ? TMath::Log(1. / z) : -1;
1161 if(trackPt > (1. - 1e-06) * jetPt && trackPt < (1. + 1e-06) * jetPt) { // case z=1 : move entry to last histo bin <1
1168 //_____________________________________________________________________________
1169 void AliAnalysisTaskPID::CleanupParticleFractionHistos()
1171 // Delete histos with particle fractions
1173 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1174 delete fFractionHists[i];
1175 fFractionHists[i] = 0x0;
1177 delete fFractionSysErrorHists[i];
1178 fFractionSysErrorHists[i] = 0x0;
1183 //_____________________________________________________________________________
1184 Double_t AliAnalysisTaskPID::ConvolutedGaus(const Double_t* xx, const Double_t* par) const
1186 // Convolutes gauss with an exponential tail which describes dEdx-response better than pure gaussian
1188 const Double_t mean = par[0];
1189 const Double_t sigma = par[1];
1190 const Double_t lambda = par[2];
1193 printf("File: %s, Line: %d: ConvolutedGaus: mean %e, sigma %e, lambda %e\n", (char*)__FILE__, __LINE__, mean, sigma, lambda);
1195 return lambda/sigma*TMath::Exp(-lambda/sigma*(xx[0]-mean)+lambda*lambda*0.5)*0.5*TMath::Erfc((-xx[0]+mean+sigma*lambda)/sigma*fgkOneOverSqrt2);
1199 //_____________________________________________________________________________
1200 inline Double_t AliAnalysisTaskPID::FastGaus(Double_t x, Double_t mean, Double_t sigma) const
1202 // Calculate an unnormalised gaussian function with mean and sigma.
1204 if (sigma < fgkEpsilon)
1207 const Double_t arg = (x - mean) / sigma;
1208 return exp(-0.5 * arg * arg);
1212 //_____________________________________________________________________________
1213 inline Double_t AliAnalysisTaskPID::FastNormalisedGaus(Double_t x, Double_t mean, Double_t sigma) const
1215 // Calculate a normalised (divided by sqrt(2*Pi)*sigma) gaussian function with mean and sigma.
1217 if (sigma < fgkEpsilon)
1220 const Double_t arg = (x - mean) / sigma;
1221 const Double_t res = exp(-0.5 * arg * arg);
1222 return res / (2.50662827463100024 * sigma); //sqrt(2*Pi)=2.50662827463100024
1226 //_____________________________________________________________________________
1227 Int_t AliAnalysisTaskPID::FindBinWithinRange(TAxis* axis, Double_t value) const
1229 // Find the corresponding bin of the axis. Values outside the range (also under and overflow) will be set to the first/last
1232 Int_t bin = axis->FindFixBin(value);
1236 if (bin > axis->GetNbins())
1237 bin = axis->GetNbins();
1243 //_____________________________________________________________________________
1244 Int_t AliAnalysisTaskPID::FindFirstBinAboveIn3dSubset(const TH3* hist, Double_t threshold, Int_t yBin,
1247 // Kind of projects a TH3 to 1 bin combination in y and z
1248 // and looks for the first x bin above a threshold for this projection.
1249 // If no such bin is found, -1 is returned.
1254 Int_t nBinsX = hist->GetNbinsX();
1255 for (Int_t xBin = 1; xBin <= nBinsX; xBin++) {
1256 if (hist->GetBinContent(xBin, yBin, zBin) > threshold)
1264 //_____________________________________________________________________________
1265 Int_t AliAnalysisTaskPID::FindLastBinAboveIn3dSubset(const TH3* hist, Double_t threshold, Int_t yBin,
1268 // Kind of projects a TH3 to 1 bin combination in y and z
1269 // and looks for the last x bin above a threshold for this projection.
1270 // If no such bin is found, -1 is returned.
1275 Int_t nBinsX = hist->GetNbinsX();
1276 for (Int_t xBin = nBinsX; xBin >= 1; xBin--) {
1277 if (hist->GetBinContent(xBin, yBin, zBin) > threshold)
1285 //_____________________________________________________________________________
1286 Bool_t AliAnalysisTaskPID::GetParticleFraction(Double_t trackPt, Double_t jetPt, Double_t centralityPercentile,
1287 AliPID::EParticleType species,
1288 Double_t& fraction, Double_t& fractionErrorStat, Double_t& fractionErrorSys) const
1290 // Computes the particle fraction for the corresponding species for the given trackPt, jetPt and centrality.
1291 // Use jetPt = -1 for inclusive spectra and centralityPercentile = -1 for pp.
1292 // On success (return value kTRUE), fraction contains the particle fraction, fractionErrorStat(Sys) the sigma of its
1293 // statistical (systematic) error
1296 fractionErrorStat = 999.;
1297 fractionErrorSys = 999.;
1299 if (species > AliPID::kProton || species < AliPID::kElectron) {
1300 AliError(Form("Only fractions for species index %d to %d availabe, but not for the requested one: %d", 0, AliPID::kProton, species));
1304 if (!fFractionHists[species]) {
1305 AliError(Form("Histo with particle fractions for species %d not loaded!", species));
1310 Int_t jetPtBin = FindBinWithinRange(fFractionHists[species]->GetYaxis(), jetPt);
1311 Int_t centBin = FindBinWithinRange(fFractionHists[species]->GetZaxis(), centralityPercentile);
1313 // The following interpolation takes the bin content of the first/last available bin,
1314 // if requested point lies beyond bin center of first/last bin.
1315 // The interpolation is only done for the x-axis (track pT), i.e. jetPtBin and centBin are fix,
1316 // because the analysis will anyhow be run in bins of jetPt and centrality and
1317 // it is not desired to correlate different jetPt bins via interpolation.
1319 // The same procedure is used for the error of the fraction
1320 TAxis* xAxis = fFractionHists[species]->GetXaxis();
1322 // No interpolation to values beyond the centers of the first/last bins (we don't know exactly where the spectra start or stop,
1323 // thus, search for the first and last bin above 0.0 to constrain the range
1324 Int_t firstBin = TMath::Max(1, FindFirstBinAboveIn3dSubset(fFractionHists[species], 0.0, jetPtBin, centBin));
1325 Int_t lastBin = TMath::Min(fFractionHists[species]->GetNbinsX(),
1326 FindLastBinAboveIn3dSubset(fFractionHists[species], 0.0, jetPtBin, centBin));
1328 if (trackPt <= xAxis->GetBinCenter(firstBin)) {
1329 fraction = fFractionHists[species]->GetBinContent(firstBin, jetPtBin, centBin);
1330 fractionErrorStat = fFractionHists[species]->GetBinError(firstBin, jetPtBin, centBin);
1331 fractionErrorSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(firstBin, jetPtBin, centBin) : 0.;
1333 else if (trackPt >= xAxis->GetBinCenter(lastBin)) {
1334 fraction = fFractionHists[species]->GetBinContent(lastBin, jetPtBin, centBin);
1335 fractionErrorStat = fFractionHists[species]->GetBinError(lastBin, jetPtBin, centBin);
1336 fractionErrorSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(lastBin, jetPtBin, centBin) : 0.;
1339 Double_t x0 = 0., x1 = 0., y0 = 0., y1 = 0.;
1340 Double_t y0errStat = 0., y1errStat = 0., y0errSys = 0., y1errSys = 0.;
1341 Int_t trackPtBin = xAxis->FindBin(trackPt);
1343 // Linear interpolation between nearest neighbours in trackPt
1344 if (trackPt <= xAxis->GetBinCenter(trackPtBin)) {
1345 y0 = fFractionHists[species]->GetBinContent(trackPtBin - 1, jetPtBin, centBin);
1346 y0errStat = fFractionHists[species]->GetBinError(trackPtBin - 1, jetPtBin, centBin);
1347 y0errSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(trackPtBin - 1, jetPtBin, centBin)
1349 x0 = xAxis->GetBinCenter(trackPtBin - 1);
1350 y1 = fFractionHists[species]->GetBinContent(trackPtBin, jetPtBin, centBin);
1351 y1errStat = fFractionHists[species]->GetBinError(trackPtBin, jetPtBin, centBin);
1352 y1errSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(trackPtBin, jetPtBin, centBin)
1354 x1 = xAxis->GetBinCenter(trackPtBin);
1357 y0 = fFractionHists[species]->GetBinContent(trackPtBin, jetPtBin, centBin);
1358 y0errStat = fFractionHists[species]->GetBinError(trackPtBin, jetPtBin, centBin);
1359 y0errSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(trackPtBin, jetPtBin, centBin)
1361 x0 = xAxis->GetBinCenter(trackPtBin);
1362 y1 = fFractionHists[species]->GetBinContent(trackPtBin + 1, jetPtBin, centBin);
1363 y1errStat = fFractionHists[species]->GetBinError(trackPtBin + 1, jetPtBin, centBin);
1364 y1errSys = fFractionSysErrorHists[species] ? fFractionSysErrorHists[species]->GetBinError(trackPtBin + 1, jetPtBin, centBin)
1366 x1 = xAxis->GetBinCenter(trackPtBin + 1);
1369 // Per construction: x0 < trackPt < x1
1370 fraction = y0 + (trackPt - x0) * ((y1 - y0) / (x1 - x0));
1371 fractionErrorStat = y0errStat + (trackPt - x0) * ((y1errStat - y0errStat) / (x1 - x0));
1372 fractionErrorSys = fFractionSysErrorHists[species] ? (y0errSys + (trackPt - x0) * ((y1errSys - y0errSys) / (x1 - x0))) : 0.;
1379 //_____________________________________________________________________________
1380 Bool_t AliAnalysisTaskPID::GetParticleFractions(Double_t trackPt, Double_t jetPt, Double_t centralityPercentile,
1381 Double_t* prob, Int_t smearSpeciesByError,
1382 Int_t takeIntoAccountSpeciesSysError, Bool_t uniformSystematicError) const
1384 // Fills the particle fractions for the given trackPt, jetPt and centrality into "prob".
1385 // Use jetPt = -1 for inclusive spectra and centralityPercentile = -1 for pp.
1386 // If smearSpeciesByError is >= 0 && < AliPID::kSPECIES, the returned fractions will be a random number distributed
1387 // with a gauss with mean being the corresponding particle fraction and sigma it's error for the considered species
1388 // "smearSpeciesByError".
1389 // Note that in this case the fractions for all species will NOT sum up to 1!
1390 // Thus, all other species fractions will be re-scaled weighted with their corresponding statistical error.
1391 // A similar procedure is used for "takeIntoAccountSpeciesSysError": The systematic error of the corresponding species
1392 // is used to generate a random number with uniform distribution in [mean - sysError, mean + sysError] for the new mean
1393 // (in cace of uniformSystematicError = kTRUE, otherwise it will be a gaus(mean, sysError)),
1394 // then the other species will be re-scaled according to their systematic errors.
1395 // First, the systematic error uncertainty procedure will be performed (that is including re-scaling), then the statistical
1396 // uncertainty procedure.
1397 // On success, kTRUE is returned.
1399 if (!prob || smearSpeciesByError >= AliPID::kSPECIES || takeIntoAccountSpeciesSysError >= AliPID::kSPECIES)
1402 Double_t probTemp[AliPID::kSPECIES];
1403 Double_t probErrorStat[AliPID::kSPECIES];
1404 Double_t probErrorSys[AliPID::kSPECIES];
1406 Bool_t success = kTRUE;
1407 success = success && GetParticleFraction(trackPt, jetPt, centralityPercentile, AliPID::kElectron,
1408 probTemp[AliPID::kElectron], probErrorStat[AliPID::kElectron],
1409 probErrorSys[AliPID::kElectron]);
1410 success = success && GetParticleFraction(trackPt, jetPt, centralityPercentile, AliPID::kMuon,
1411 probTemp[AliPID::kMuon], probErrorStat[AliPID::kMuon], probErrorSys[AliPID::kMuon]);
1412 success = success && GetParticleFraction(trackPt, jetPt, centralityPercentile, AliPID::kPion,
1413 probTemp[AliPID::kPion], probErrorStat[AliPID::kPion], probErrorSys[AliPID::kPion]);
1414 success = success && GetParticleFraction(trackPt, jetPt, centralityPercentile, AliPID::kKaon,
1415 probTemp[AliPID::kKaon], probErrorStat[AliPID::kKaon], probErrorSys[AliPID::kKaon]);
1416 success = success && GetParticleFraction(trackPt, jetPt, centralityPercentile, AliPID::kProton,
1417 probTemp[AliPID::kProton], probErrorStat[AliPID::kProton], probErrorSys[AliPID::kProton]);
1422 // If desired, take into account the systematic error of the corresponding species and re-generate probTemp accordingly
1423 if (takeIntoAccountSpeciesSysError >= 0) {
1424 // Generate random fraction of the considered species "smearSpeciesByError" according to mean and sigma
1425 Double_t generatedFraction = uniformSystematicError
1426 ? fRandom->Rndm() * 2. * probErrorSys[takeIntoAccountSpeciesSysError]
1427 - probErrorSys[takeIntoAccountSpeciesSysError]
1428 + probTemp[takeIntoAccountSpeciesSysError]
1429 : fRandom->Gaus(probTemp[takeIntoAccountSpeciesSysError],
1430 probErrorSys[takeIntoAccountSpeciesSysError]);
1432 // Catch cases with invalid fraction (can happen for large errors), i.e. fraction < 0 or > 1
1433 if (generatedFraction < 0.)
1434 generatedFraction = 0.;
1435 else if (generatedFraction > 1.)
1436 generatedFraction = 1.;
1438 // Calculate difference from original fraction (original fractions sum up to 1!)
1439 Double_t deltaFraction = generatedFraction - probTemp[takeIntoAccountSpeciesSysError];
1441 // Fractions must (including errors) lie inside [0,1] -> Adapt weights accordingly by setting the errors
1442 if (deltaFraction > 0) {
1443 // Some part will be SUBTRACTED from the other fractions
1444 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1445 if (probTemp[i] - probErrorSys[i] < 0)
1446 probErrorSys[i] = probTemp[i];
1450 // Some part will be ADDED to the other fractions
1451 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1452 if (probTemp[i] + probErrorSys[i] > 1)
1453 probErrorSys[i] = 1. - probTemp[i];
1457 // Compute summed weight of all fractions except for the considered one
1458 Double_t summedWeight = 0.;
1459 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1460 if (i != takeIntoAccountSpeciesSysError)
1461 summedWeight += probErrorSys[i];
1464 // Compute the weight for the other species
1466 if (summedWeight <= 1e-13) {
1467 // If this happens for some reason (it should not!), just assume flat weight
1468 printf("Error: summedWeight (sys error) ~ 0 for trackPt %f, jetPt %f, centralityPercentile %f. Setting flat weight!\n",
1469 trackPt, jetPt, centralityPercentile);
1472 Double_t weight[AliPID::kSPECIES];
1473 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1474 if (i != takeIntoAccountSpeciesSysError) {
1475 if (summedWeight > 1e-13)
1476 weight[i] = probErrorSys[i] / summedWeight;
1478 weight[i] = probErrorSys[i] / (AliPID::kSPECIES - 1);
1482 // For the final generated fractions, set the generated value for the considered species
1483 // and the generated value minus delta times statistical weight
1484 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1485 if (i != takeIntoAccountSpeciesSysError)
1486 probTemp[i] = probTemp[i] - weight[i] * deltaFraction;
1488 probTemp[i] = generatedFraction;
1492 // Using the values of probTemp (either the original ones or those after taking into account the systematic error),
1493 // calculate the final fractions - if the statistical error is to be taken into account, smear the corresponding
1494 // fraction. If not, just write probTemp to the final result array.
1495 if (smearSpeciesByError >= 0) {
1496 // Generate random fraction of the considered species "smearSpeciesByError" according to mean and sigma
1497 Double_t generatedFraction = fRandom->Gaus(probTemp[smearSpeciesByError], probErrorStat[smearSpeciesByError]);
1499 // Catch cases with invalid fraction (can happen for large errors), i.e. fraction < 0 or > 1
1500 if (generatedFraction < 0.)
1501 generatedFraction = 0.;
1502 else if (generatedFraction > 1.)
1503 generatedFraction = 1.;
1505 // Calculate difference from original fraction (original fractions sum up to 1!)
1506 Double_t deltaFraction = generatedFraction - probTemp[smearSpeciesByError];
1508 // Fractions must (including errors) lie inside [0,1] -> Adapt weights accordingly by setting the errors
1509 if (deltaFraction > 0) {
1510 // Some part will be SUBTRACTED from the other fractions
1511 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1512 if (probTemp[i] - probErrorStat[i] < 0)
1513 probErrorStat[i] = probTemp[i];
1517 // Some part will be ADDED to the other fractions
1518 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1519 if (probTemp[i] + probErrorStat[i] > 1)
1520 probErrorStat[i] = 1. - probTemp[i];
1524 // Compute summed weight of all fractions except for the considered one
1525 Double_t summedWeight = 0.;
1526 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1527 if (i != smearSpeciesByError)
1528 summedWeight += probErrorStat[i];
1531 // Compute the weight for the other species
1533 if (summedWeight <= 1e-13) {
1534 // If this happens for some reason (it should not!), just assume flat weight
1535 printf("Error: summedWeight (stat error) ~ 0 for trackPt %f, jetPt %f, centralityPercentile %f. Setting flat weight!\n",
1536 trackPt, jetPt, centralityPercentile);
1539 Double_t weight[AliPID::kSPECIES];
1540 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1541 if (i != smearSpeciesByError) {
1542 if (summedWeight > 1e-13)
1543 weight[i] = probErrorStat[i] / summedWeight;
1545 weight[i] = probErrorStat[i] / (AliPID::kSPECIES - 1);
1549 // For the final generated fractions, set the generated value for the considered species
1550 // and the generated value minus delta times statistical weight
1551 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1552 if (i != smearSpeciesByError)
1553 prob[i] = probTemp[i] - weight[i] * deltaFraction;
1555 prob[i] = generatedFraction;
1559 // Just take the generated values
1560 for (Int_t i = 0; i < AliPID::kSPECIES; i++)
1561 prob[i] = probTemp[i];
1565 // Should already be normalised, but make sure that it really is:
1566 Double_t probSum = 0.;
1567 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1574 if (TMath::Abs(probSum - 1.0) > 1e-4) {
1575 printf("Warning: Re-normalising sum of fractions: Sum is %e\n", probSum);
1576 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1585 //_____________________________________________________________________________
1586 const TH3D* AliAnalysisTaskPID::GetParticleFractionHisto(Int_t species, Bool_t sysError) const
1588 if (species < AliPID::kElectron || species > AliPID::kProton)
1591 return sysError ? fFractionSysErrorHists[species] : fFractionHists[species];
1595 //_____________________________________________________________________________
1596 Double_t AliAnalysisTaskPID::GetMCStrangenessFactorCMS(Int_t motherPDG, Double_t motherGenPt)
1598 // Strangeness ratio MC/data as function of mother pt from CMS data in |eta|<2.0
1599 // -> Based on function in PWGJE/AliAnalysisTaskFragmentationFunction, which uses
1600 // the following data from CMS pp @ 7 TeV inclusive (JHEP 05 (2011) 064)
1604 const Int_t absMotherPDG = TMath::Abs(motherPDG);
1606 if (absMotherPDG == 310 || absMotherPDG == 321) { // K0s / K+ / K-
1607 if (0.00 <= motherGenPt && motherGenPt < 0.20) fac = 0.768049;
1608 else if(0.20 <= motherGenPt && motherGenPt < 0.40) fac = 0.732933;
1609 else if(0.40 <= motherGenPt && motherGenPt < 0.60) fac = 0.650298;
1610 else if(0.60 <= motherGenPt && motherGenPt < 0.80) fac = 0.571332;
1611 else if(0.80 <= motherGenPt && motherGenPt < 1.00) fac = 0.518734;
1612 else if(1.00 <= motherGenPt && motherGenPt < 1.20) fac = 0.492543;
1613 else if(1.20 <= motherGenPt && motherGenPt < 1.40) fac = 0.482704;
1614 else if(1.40 <= motherGenPt && motherGenPt < 1.60) fac = 0.488056;
1615 else if(1.60 <= motherGenPt && motherGenPt < 1.80) fac = 0.488861;
1616 else if(1.80 <= motherGenPt && motherGenPt < 2.00) fac = 0.492862;
1617 else if(2.00 <= motherGenPt && motherGenPt < 2.20) fac = 0.504332;
1618 else if(2.20 <= motherGenPt && motherGenPt < 2.40) fac = 0.501858;
1619 else if(2.40 <= motherGenPt && motherGenPt < 2.60) fac = 0.512970;
1620 else if(2.60 <= motherGenPt && motherGenPt < 2.80) fac = 0.524131;
1621 else if(2.80 <= motherGenPt && motherGenPt < 3.00) fac = 0.539130;
1622 else if(3.00 <= motherGenPt && motherGenPt < 3.20) fac = 0.554101;
1623 else if(3.20 <= motherGenPt && motherGenPt < 3.40) fac = 0.560348;
1624 else if(3.40 <= motherGenPt && motherGenPt < 3.60) fac = 0.568869;
1625 else if(3.60 <= motherGenPt && motherGenPt < 3.80) fac = 0.583310;
1626 else if(3.80 <= motherGenPt && motherGenPt < 4.00) fac = 0.604818;
1627 else if(4.00 <= motherGenPt && motherGenPt < 5.00) fac = 0.632630;
1628 else if(5.00 <= motherGenPt && motherGenPt < 6.00) fac = 0.710070;
1629 else if(6.00 <= motherGenPt && motherGenPt < 8.00) fac = 0.736365;
1630 else if(8.00 <= motherGenPt && motherGenPt < 10.00) fac = 0.835865;
1633 if (absMotherPDG == 3122) { // Lambda
1634 if (0.00 <= motherGenPt && motherGenPt < 0.20) fac = 0.645162;
1635 else if(0.20 <= motherGenPt && motherGenPt < 0.40) fac = 0.627431;
1636 else if(0.40 <= motherGenPt && motherGenPt < 0.60) fac = 0.457136;
1637 else if(0.60 <= motherGenPt && motherGenPt < 0.80) fac = 0.384369;
1638 else if(0.80 <= motherGenPt && motherGenPt < 1.00) fac = 0.330597;
1639 else if(1.00 <= motherGenPt && motherGenPt < 1.20) fac = 0.309571;
1640 else if(1.20 <= motherGenPt && motherGenPt < 1.40) fac = 0.293620;
1641 else if(1.40 <= motherGenPt && motherGenPt < 1.60) fac = 0.283709;
1642 else if(1.60 <= motherGenPt && motherGenPt < 1.80) fac = 0.282047;
1643 else if(1.80 <= motherGenPt && motherGenPt < 2.00) fac = 0.277261;
1644 else if(2.00 <= motherGenPt && motherGenPt < 2.20) fac = 0.275772;
1645 else if(2.20 <= motherGenPt && motherGenPt < 2.40) fac = 0.280726;
1646 else if(2.40 <= motherGenPt && motherGenPt < 2.60) fac = 0.288540;
1647 else if(2.60 <= motherGenPt && motherGenPt < 2.80) fac = 0.288315;
1648 else if(2.80 <= motherGenPt && motherGenPt < 3.00) fac = 0.296619;
1649 else if(3.00 <= motherGenPt && motherGenPt < 3.20) fac = 0.302993;
1650 else if(3.20 <= motherGenPt && motherGenPt < 3.40) fac = 0.338121;
1651 else if(3.40 <= motherGenPt && motherGenPt < 3.60) fac = 0.349800;
1652 else if(3.60 <= motherGenPt && motherGenPt < 3.80) fac = 0.356802;
1653 else if(3.80 <= motherGenPt && motherGenPt < 4.00) fac = 0.391202;
1654 else if(4.00 <= motherGenPt && motherGenPt < 5.00) fac = 0.422573;
1655 else if(5.00 <= motherGenPt && motherGenPt < 6.00) fac = 0.573815;
1656 else if(6.00 <= motherGenPt && motherGenPt < 8.00) fac = 0.786984;
1657 else if(8.00 <= motherGenPt && motherGenPt < 10.00) fac = 1.020021;
1660 if (absMotherPDG == 3312 || absMotherPDG == 3322) { // xi
1661 if (0.00 <= motherGenPt && motherGenPt < 0.20) fac = 0.666620;
1662 else if(0.20 <= motherGenPt && motherGenPt < 0.40) fac = 0.575908;
1663 else if(0.40 <= motherGenPt && motherGenPt < 0.60) fac = 0.433198;
1664 else if(0.60 <= motherGenPt && motherGenPt < 0.80) fac = 0.340901;
1665 else if(0.80 <= motherGenPt && motherGenPt < 1.00) fac = 0.290896;
1666 else if(1.00 <= motherGenPt && motherGenPt < 1.20) fac = 0.236074;
1667 else if(1.20 <= motherGenPt && motherGenPt < 1.40) fac = 0.218681;
1668 else if(1.40 <= motherGenPt && motherGenPt < 1.60) fac = 0.207763;
1669 else if(1.60 <= motherGenPt && motherGenPt < 1.80) fac = 0.222848;
1670 else if(1.80 <= motherGenPt && motherGenPt < 2.00) fac = 0.208806;
1671 else if(2.00 <= motherGenPt && motherGenPt < 2.20) fac = 0.197275;
1672 else if(2.20 <= motherGenPt && motherGenPt < 2.40) fac = 0.183645;
1673 else if(2.40 <= motherGenPt && motherGenPt < 2.60) fac = 0.188788;
1674 else if(2.60 <= motherGenPt && motherGenPt < 2.80) fac = 0.188282;
1675 else if(2.80 <= motherGenPt && motherGenPt < 3.00) fac = 0.207442;
1676 else if(3.00 <= motherGenPt && motherGenPt < 3.20) fac = 0.240388;
1677 else if(3.20 <= motherGenPt && motherGenPt < 3.40) fac = 0.241916;
1678 else if(3.40 <= motherGenPt && motherGenPt < 3.60) fac = 0.208276;
1679 else if(3.60 <= motherGenPt && motherGenPt < 3.80) fac = 0.234550;
1680 else if(3.80 <= motherGenPt && motherGenPt < 4.00) fac = 0.251689;
1681 else if(4.00 <= motherGenPt && motherGenPt < 5.00) fac = 0.310204;
1682 else if(5.00 <= motherGenPt && motherGenPt < 6.00) fac = 0.343492;
1685 const Double_t weight = 1. / fac;
1691 //_____________________________________________________________________________
1692 Double_t AliAnalysisTaskPID::GetMCStrangenessFactorCMS(AliMCEvent* mcEvent, AliMCParticle* daughter)
1694 // Strangeness ratio MC/data as function of mother pt from CMS data in |eta|<2.0
1695 // -> Based on function in PWGJE/AliAnalysisTaskFragmentationFunction
1700 AliMCParticle* currentMother = daughter;
1701 AliMCParticle* currentDaughter = daughter;
1704 // find first primary mother K0s, Lambda or Xi
1706 Int_t daughterPDG = currentDaughter->PdgCode();
1708 Int_t motherLabel = currentDaughter->GetMother();
1709 if(motherLabel >= mcEvent->GetNumberOfTracks()){ // protection
1710 currentMother = currentDaughter;
1714 currentMother = (AliMCParticle*)mcEvent->GetTrack(motherLabel);
1716 if (!currentMother) {
1717 currentMother = currentDaughter;
1721 Int_t motherPDG = currentMother->PdgCode();
1723 // phys. primary found ?
1724 if (mcEvent->IsPhysicalPrimary(motherLabel))
1727 if (TMath::Abs(daughterPDG) == 321) {
1728 // K+/K- e.g. from phi (ref data not feeddown corrected)
1729 currentMother = currentDaughter;
1732 if (TMath::Abs(motherPDG) == 310) {
1733 // K0s e.g. from phi (ref data not feeddown corrected)
1736 if (TMath::Abs(motherPDG) == 3212 && TMath::Abs(daughterPDG) == 3122) {
1737 // Mother Sigma0, daughter Lambda (this case not included in feeddown corr.)
1738 currentMother = currentDaughter;
1742 currentDaughter = currentMother;
1746 Int_t motherPDG = currentMother->PdgCode();
1747 Double_t motherGenPt = currentMother->Pt();
1749 return GetMCStrangenessFactorCMS(motherPDG, motherGenPt);
1753 // _________________________________________________________________________________
1754 AliAnalysisTaskPID::TOFpidInfo AliAnalysisTaskPID::GetTOFType(const AliVTrack* track, Int_t tofMode) const
1756 // Get the (locally defined) particle type judged by TOF
1758 if (!fPIDResponse) {
1759 Printf("ERROR: fEvent not available -> Cannot determine TOF type!");
1763 // Check kTOFout, kTIME, mismatch
1764 const AliPIDResponse::EDetPidStatus tofStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTOF, track);
1765 if (tofStatus != AliPIDResponse::kDetPidOk)
1768 Double_t nsigma[kNumTOFspecies + 1] = { -999., -999., -999., -999. };
1769 const Int_t kTOFelectron = kTOFproton + 1;
1770 nsigma[kTOFpion] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kPion);
1771 nsigma[kTOFkaon] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kKaon);
1772 nsigma[kTOFproton] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kProton);
1773 nsigma[kTOFelectron] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kElectron);
1775 Double_t inclusion = -999;
1776 Double_t exclusion = -999;
1782 else if (tofMode == 1) { // default
1786 else if (tofMode == 2) {
1791 Printf("ERROR: Bad TOF mode: %d!", tofMode);
1795 // Smaller exclusion cut for electron band in order not to sacrifise too much TOF pions,
1796 // but still have a reasonably small electron contamination
1797 Double_t exclusionForEl = 1.5;
1799 // Exclusion cut on electrons for pions because the precision of pions is good and
1800 // the contamination of electron can not be ignored (although effect on pions is small
1801 // due to overall small electron fraction, the contamination would completely bias the
1802 // electron fraction).
1803 // The electron exclsuion cut is also applied to kaons and protons for consistency, but
1804 // there should be no effect. This is because there is already the exclusion cut on pions
1805 // and pions and electrons completely overlap in the region, where electrons and pions
1806 // fall inside the inclusion cut of kaons/protons.
1807 if (TMath::Abs(nsigma[kTOFpion]) < inclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion
1808 && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
1810 if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) < inclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion
1811 && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
1813 if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) < inclusion
1814 && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
1817 // There are no TOF electrons selected because the purity is rather bad, even for small momenta
1818 // (also a small mismatch probability significantly affects electrons because their fraction
1819 // is small). There is no need for TOF electrons anyway, since the dEdx distribution of kaons and
1820 // protons in a given pT bin (also at the dEdx crossings) is very different from that of electrons.
1821 // This is due to the steeply falling dEdx of p and K with momentum, whereas the electron dEdx stays
1823 // As a result, the TPC fit yields a more accurate electron fraction than the TOF selection can do.
1829 // _________________________________________________________________________________
1830 Bool_t AliAnalysisTaskPID::IsSecondaryWithStrangeMotherMC(AliMCEvent* mcEvent, Int_t partLabel)
1832 // Check whether particle is a secondary with strange mother, i.e. returns kTRUE if a strange mother is found
1833 // and the particle is NOT a physical primary. In all other cases kFALSE is returned
1835 if (!mcEvent || partLabel < 0)
1838 AliMCParticle* part = (AliMCParticle*)mcEvent->GetTrack(partLabel);
1843 if (mcEvent->IsPhysicalPrimary(partLabel))
1846 Int_t iMother = part->GetMother();
1851 AliMCParticle* partM = (AliMCParticle*)mcEvent->GetTrack(iMother);
1855 Int_t codeM = TMath::Abs(partM->PdgCode());
1856 Int_t mfl = Int_t(codeM / TMath::Power(10, Int_t(TMath::Log10(codeM))));
1857 if (mfl == 3 && codeM != 3) // codeM = 3 is for s quark
1864 //_____________________________________________________________________________
1865 Bool_t AliAnalysisTaskPID::SetParticleFractionHisto(const TH3D* hist, Int_t species, Bool_t sysError)
1867 // Store a clone of hist (containing the particle fractions of the corresponding species with statistical error (sysError = kFALSE)
1868 // or systematic error (sysError = kTRUE), respectively), internally
1870 if (species < AliPID::kElectron || species > AliPID::kProton) {
1871 AliError(Form("Only fractions for species index %d to %d can be set, but not for the requested one: %d", 0,
1872 AliPID::kProton, species));
1877 delete fFractionSysErrorHists[species];
1879 fFractionSysErrorHists[species] = new TH3D(*hist);
1882 delete fFractionHists[species];
1884 fFractionHists[species] = new TH3D(*hist);
1891 //_____________________________________________________________________________
1892 Bool_t AliAnalysisTaskPID::SetParticleFractionHistosFromFile(const TString filePathName, Bool_t sysError)
1894 // Loads particle fractions for all species from the desired file and returns kTRUE on success.
1895 // The maps are assumed to be of Type TH3D, to sit in the main directory and to have names
1896 // Form("hFraction_%e", AliPID::ParticleName(i)) for sysError = kFALSE and
1897 // Form("hFractionSysError_%e", AliPID::ParticleName(i)) for sysError = kTRUE.
1899 TFile* f = TFile::Open(filePathName.Data());
1901 std::cout << "Failed to open file with particle fractions \"" << filePathName.Data() << "\"!" << std::endl;
1906 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
1907 TString histName = Form("hFraction%s_%s", sysError ? "SysError" : "", AliPID::ParticleName(i));
1908 hist = dynamic_cast<TH3D*>(f->Get(histName.Data()));
1910 std::cout << "Failed to load particle fractions for " << histName.Data() << "!";
1911 std::cout << std::endl << "Cleaning up particle fraction histos!" << std::endl;
1912 CleanupParticleFractionHistos();
1916 if (!SetParticleFractionHisto(hist, i, sysError)) {
1917 std::cout << "Failed to load particle fractions for " << histName.Data() << "!";
1918 std::cout << std::endl << "Cleaning up particle fraction histos!" << std::endl;
1919 CleanupParticleFractionHistos();
1931 //_____________________________________________________________________________
1932 Int_t AliAnalysisTaskPID::GetRandomParticleTypeAccordingToParticleFractions(Double_t trackPt, Double_t jetPt,
1933 Double_t centralityPercentile,
1934 Bool_t smearByError,
1935 Bool_t takeIntoAccountSysError) const
1937 // Uses the stored histograms with the particle fractions to generate a random particle type according to these fractions.
1938 // In case of problems (e.g. histo missing), AliPID::kUnknown is returned.
1939 // If smearByError is kTRUE, the used fractions will be random numbers distributed with a gauss with mean
1940 // being the corresponding particle fraction and sigma it's error.
1941 // Note that in this case only the fraction of a random species is varied in this way. The other fractions
1942 // will be re-normalised according their statistical errors.
1943 // The same holds for the systematic error of species "takeIntoAccountSpeciesSysError", but the random number will be
1944 // uniformly distributed within [mean - sys, mean + sys] and the re-normalisation will be weighted with the systematic errors.
1945 // Note that the fractions will be calculated first with only the systematic error taken into account (if desired), including
1946 // re-normalisation. Then, the resulting fractions will be used to calculate the final fractions - either with statistical error
1947 // or without. The species, for which the error will be used for smearing, is the same for sys and stat error.
1949 Double_t prob[AliPID::kSPECIES];
1950 Int_t randomSpecies = (smearByError || takeIntoAccountSysError) ? (Int_t)(fRandom->Rndm() * AliPID::kSPECIES) : -1;
1951 Bool_t success = GetParticleFractions(trackPt, jetPt, centralityPercentile, prob, randomSpecies, randomSpecies);
1954 return AliPID::kUnknown;
1956 Double_t rnd = fRandom->Rndm(); // Produce uniformly distributed floating point in ]0, 1]
1958 if (rnd <= prob[AliPID::kPion])
1959 return AliPID::kPion;
1960 else if (rnd <= prob[AliPID::kPion] + prob[AliPID::kKaon])
1961 return AliPID::kKaon;
1962 else if (rnd <= prob[AliPID::kPion] + prob[AliPID::kKaon] + prob[AliPID::kProton])
1963 return AliPID::kProton;
1964 else if (rnd <= prob[AliPID::kPion] + prob[AliPID::kKaon] + prob[AliPID::kProton] + prob[AliPID::kElectron])
1965 return AliPID::kElectron;
1967 return AliPID::kMuon; //else it must be a muon (only species left)
1971 //_____________________________________________________________________________
1972 AliAnalysisTaskPID::ErrorCode AliAnalysisTaskPID::GenerateDetectorResponse(AliAnalysisTaskPID::ErrorCode errCode,
1973 Double_t mean, Double_t sigma,
1974 Double_t* responses, Int_t nResponses,
1977 // Generate detector response. If a previous generation was not successful or there is something wrong with this signal generation,
1978 // the function will return kFALSE
1982 // Reset response array
1983 for (Int_t i = 0; i < nResponses; i++)
1984 responses[i] = -999;
1986 if (errCode == kError)
1989 ErrorCode ownErrCode = kNoErrors;
1991 if (fUseConvolutedGaus && !usePureGaus) {
1992 // In case of convoluted gauss, calculate the probability density only once to save a lot of time!
1994 TH1* hProbDensity = 0x0;
1995 ownErrCode = SetParamsForConvolutedGaus(mean, sigma);
1996 if (ownErrCode == kError)
1999 hProbDensity = fConvolutedGausDeltaPrime->GetHistogram();
2001 for (Int_t i = 0; i < nResponses; i++) {
2002 responses[i] = hProbDensity->GetRandom();
2003 //responses[i] fConvolutedGausDeltaPrime->GetRandom(); // MUCH slower than using the binned version via the histogram
2007 for (Int_t i = 0; i < nResponses; i++) {
2008 responses[i] = fRandom->Gaus(mean, sigma);
2012 // If forwarded error code was a warning (error case has been handled before), return a warning
2013 if (errCode == kWarning)
2016 return ownErrCode; // Forward success/warning
2020 //_____________________________________________________________________________
2021 void AliAnalysisTaskPID::PrintSettings(Bool_t printSystematicsSettings) const
2023 // Print current settings.
2025 printf("\n\nSettings for task %s:\n", GetName());
2026 printf("Is pPb/Pbp: %d -> %s\n", GetIsPbpOrpPb(), GetIsPbpOrpPb() ? "Adapting vertex cuts" : "Using standard vertex cuts");
2027 printf("Track cuts: %s\n", fTrackFilter ? fTrackFilter->GetTitle() : "-");
2028 printf("Eta cut: %.2f <= |eta| <= %.2f\n", GetEtaAbsCutLow(), GetEtaAbsCutUp());
2029 printf("Phi' cut: %d\n", GetUsePhiCut());
2030 printf("TPCCutMIGeo: %d\n", GetUseTPCCutMIGeo());
2031 if (GetUseTPCCutMIGeo()) {
2032 printf("GetCutGeo: %f\n", GetCutGeo());
2033 printf("GetCutNcr: %f\n", GetCutNcr());
2034 printf("GetCutNcl: %f\n", GetCutNcl());
2036 printf("TPCnclCut: %d\n", GetUseTPCnclCut());
2037 if (GetUseTPCnclCut()) {
2038 printf("GetCutPureNcl: %d\n", GetCutPureNcl());
2043 printf("Centrality estimator: %s\n", GetCentralityEstimator().Data());
2047 printf("Use MC-ID for signal generation: %d\n", GetUseMCidForGeneration());
2048 printf("Use ITS: %d\n", GetUseITS());
2049 printf("Use TOF: %d\n", GetUseTOF());
2050 printf("Use priors: %d\n", GetUsePriors());
2051 printf("Use TPC default priors: %d\n", GetUseTPCDefaultPriors());
2052 printf("Use convoluted Gauss: %d\n", GetUseConvolutedGaus());
2053 printf("Accuracy of non-Gaussian tail: %e\n", GetAccuracyNonGaussianTail());
2054 printf("Take into account muons: %d\n", GetTakeIntoAccountMuons());
2055 printf("TOF mode: %d\n", GetTOFmode());
2056 printf("\nParams for transition from gauss to asymmetric shape:\n");
2057 printf("[0]: %e\n", GetConvolutedGaussTransitionPar(0));
2058 printf("[1]: %e\n", GetConvolutedGaussTransitionPar(1));
2059 printf("[2]: %e\n", GetConvolutedGaussTransitionPar(2));
2063 printf("Do PID: %d\n", fDoPID);
2064 printf("Do Efficiency: %d\n", fDoEfficiency);
2065 printf("Do PtResolution: %d\n", fDoPtResolution);
2069 printf("Input from other task: %d\n", GetInputFromOtherTask());
2070 printf("Store additional jet information: %d\n", GetStoreAdditionalJetInformation());
2071 printf("Store centrality percentile: %d", GetStoreCentralityPercentile());
2073 if (printSystematicsSettings)
2074 PrintSystematicsSettings();
2080 //_____________________________________________________________________________
2081 void AliAnalysisTaskPID::PrintSystematicsSettings() const
2083 // Print current settings for systematic studies.
2085 printf("\n\nSettings for systematics for task %s:\n", GetName());
2086 printf("SplinesThr:\t%f\n", GetSystematicScalingSplinesThreshold());
2087 printf("SplinesBelowThr:\t%f\n", GetSystematicScalingSplinesBelowThreshold());
2088 printf("SplinesAboveThr:\t%f\n", GetSystematicScalingSplinesAboveThreshold());
2089 printf("EtaCorrMomThr:\t%f\n", GetSystematicScalingEtaCorrectionMomentumThr());
2090 printf("EtaCorrLowP:\t%f\n", GetSystematicScalingEtaCorrectionLowMomenta());
2091 printf("EtaCorrHighP:\t%f\n", GetSystematicScalingEtaCorrectionHighMomenta());
2092 printf("SigmaParaThr:\t%f\n", GetSystematicScalingEtaSigmaParaThreshold());
2093 printf("SigmaParaBelowThr:\t%f\n", GetSystematicScalingEtaSigmaParaBelowThreshold());
2094 printf("SigmaParaAboveThr:\t%f\n", GetSystematicScalingEtaSigmaParaAboveThreshold());
2095 printf("MultCorr:\t%f\n", GetSystematicScalingMultCorrection());
2096 printf("TOF mode: %d\n", GetTOFmode());
2102 //_____________________________________________________________________________
2103 Bool_t AliAnalysisTaskPID::ProcessTrack(const AliVTrack* track, Int_t particlePDGcode, Double_t centralityPercentile,
2106 // Process the track (generate expected response, fill histos, etc.).
2107 // particlePDGcode == 0 means data. Otherwise, the corresponding MC ID will be assumed.
2109 //Printf("Debug: Task %s is starting to process track: dEdx %f, pTPC %f, eta %f, ncl %d\n", GetName(), track->GetTPCsignal(), track->GetTPCmomentum(),
2110 // track->Eta(), track->GetTPCsignalN());
2113 printf("File: %s, Line: %d: ProcessTrack\n", (char*)__FILE__, __LINE__);
2119 printf("File: %s, Line: %d: ProcessTrack -> Processing started\n", (char*)__FILE__, __LINE__);
2121 const Bool_t isMC = (particlePDGcode == 0) ? kFALSE : kTRUE;
2126 if (TMath::Abs(particlePDGcode) == 211) {//Pion
2129 else if (TMath::Abs(particlePDGcode) == 321) {//Kaon
2132 else if (TMath::Abs(particlePDGcode) == 2212) {//Proton
2135 else if (TMath::Abs(particlePDGcode) == 11) {//Electron
2138 else if (TMath::Abs(particlePDGcode) == 13) {//Muon
2141 else // In MC-ID case, set to underflow bin such that the response from this track is only used for unidentified signal generation
2142 // or signal generation with PID response and the track is still there (as in data) - e.g. relevant w.r.t. deuterons.
2143 // This is important to be as much as possible consistent with data. And the tracks can still be removed by disabling the
2144 // underflow bin for the projections
2149 //Double_t p = track->GetP();
2150 //Double_t pTPC = track->GetTPCmomentum();
2151 Double_t pT = track->Pt();
2153 Double_t z = -1, xi = -1;
2154 GetJetTrackObservables(pT, jetPt, z, xi);
2157 Double_t trackCharge = track->Charge();
2160 Double_t dEdxTPC = fPIDResponse->IsTunedOnData() ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
2163 Printf("Skipping track with strange dEdx value: dEdx %f, pTPC %f, eta %f, ncl %d\n", track->GetTPCsignal(), track->GetTPCmomentum(),
2164 track->Eta(), track->GetTPCsignalN());
2171 Double_t dEdxEl, dEdxKa, dEdxPi, dEdxMu, dEdxPr;
2172 Double_t sigmaEl, sigmaKa, sigmaPi, sigmaMu, sigmaPr;
2174 if (fDoAnySystematicStudiesOnTheExpectedSignal) {
2175 // Get the uncorrected signal first and the corresponding correction factors.
2176 // Then modify the correction factors and properly recalculate the corrected dEdx
2178 // Get pure spline values for dEdx_expected, without any correction
2179 dEdxEl = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
2180 dEdxKa = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
2181 dEdxPi = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
2182 dEdxMu = !fTakeIntoAccountMuons ? -1 :
2183 fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
2184 dEdxPr = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
2186 // Scale splines, if desired
2187 if ((TMath::Abs(fSystematicScalingSplinesBelowThreshold - 1.0) > fgkEpsilon) ||
2188 (TMath::Abs(fSystematicScalingSplinesAboveThreshold - 1.0) > fgkEpsilon)) {
2190 // Tune turn-on of correction for pions (not so relevant for the other species, since at very large momenta)
2191 const Double_t pTPC = track->GetTPCmomentum();
2193 Double_t scaleFactor = 1.;
2194 Double_t usedSystematicScalingSplines = 1.;
2196 bg = pTPC / AliPID::ParticleMass(AliPID::kElectron);
2197 scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
2198 usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
2199 + fSystematicScalingSplinesAboveThreshold * scaleFactor;
2200 dEdxEl *= usedSystematicScalingSplines;
2202 bg = pTPC / AliPID::ParticleMass(AliPID::kKaon);
2203 scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
2204 usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
2205 + fSystematicScalingSplinesAboveThreshold * scaleFactor;
2206 dEdxKa *= usedSystematicScalingSplines;
2208 bg = pTPC / AliPID::ParticleMass(AliPID::kPion);
2209 scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
2210 usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
2211 + fSystematicScalingSplinesAboveThreshold * scaleFactor;
2212 dEdxPi *= usedSystematicScalingSplines;
2214 if (fTakeIntoAccountMuons) {
2215 bg = pTPC / AliPID::ParticleMass(AliPID::kMuon);
2216 scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
2217 usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
2218 + fSystematicScalingSplinesAboveThreshold * scaleFactor;
2219 dEdxMu *= usedSystematicScalingSplines;
2223 bg = pTPC / AliPID::ParticleMass(AliPID::kProton);
2224 scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
2225 usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
2226 + fSystematicScalingSplinesAboveThreshold * scaleFactor;
2227 dEdxPr *= usedSystematicScalingSplines;
2230 // Get the eta correction factors for the (modified) expected dEdx
2231 Double_t etaCorrEl = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxEl) : 1.;
2232 Double_t etaCorrKa = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxKa) : 1.;
2233 Double_t etaCorrPi = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxPi) : 1.;
2234 Double_t etaCorrMu = fTakeIntoAccountMuons && !fPIDResponse->UseTPCEtaCorrection() ?
2235 fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxMu) : 1.;
2236 Double_t etaCorrPr = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxPr) : 1.;
2238 // Scale eta correction factors, if desired (and eta correction maps are to be used, otherwise it is not possible!)
2239 if (fPIDResponse->UseTPCEtaCorrection() &&
2240 (TMath::Abs(fSystematicScalingEtaCorrectionHighMomenta - 1.0) > fgkEpsilon ||
2241 TMath::Abs(fSystematicScalingEtaCorrectionLowMomenta - 1.0) > fgkEpsilon)) {
2242 // Since we do not want to scale the splines with this, but only the eta variation, only scale the deviation of the correction factor!
2243 // E.g. if we would have a flat eta depence fixed at 1.0, we would shift the whole thing equal to shifting the splines by the same factor!
2246 // Due to additional azimuthal effects, there is an additional eta dependence for low momenta which is not corrected successfully so far.
2247 // One can assign a different (higher) systematic scale factor for this low-p region and a threshold which separates low- and high-p.
2248 // An ERF will be used to get (as a function of p_TPC) from one correction factor to the other within roughly 0.2 GeV/c
2249 Double_t usedSystematicScalingEtaCorrection = fSystematicScalingEtaCorrectionHighMomenta;
2251 if (TMath::Abs(fSystematicScalingEtaCorrectionHighMomenta - fSystematicScalingEtaCorrectionLowMomenta) > fgkEpsilon) {
2252 const Double_t pTPC = track->GetTPCmomentum();
2253 const Double_t fractionHighMomentumScaleFactor = 0.5 * (1. + TMath::Erf((pTPC - fSystematicScalingEtaCorrectionMomentumThr) / 0.1));
2254 usedSystematicScalingEtaCorrection = fSystematicScalingEtaCorrectionLowMomenta * (1 - fractionHighMomentumScaleFactor)
2255 + fSystematicScalingEtaCorrectionHighMomenta * fractionHighMomentumScaleFactor;
2258 etaCorrEl = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrEl - 1.0);
2259 etaCorrKa = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrKa - 1.0);
2260 etaCorrPi = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrPi - 1.0);
2261 etaCorrMu = fTakeIntoAccountMuons ? (1.0 + usedSystematicScalingEtaCorrection * (etaCorrMu - 1.0)) : 1.0;
2262 etaCorrPr = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrPr - 1.0);
2265 // Get the multiplicity correction factors for the (modified) expected dEdx
2266 const Int_t currEvtMultiplicity = fPIDResponse->GetTPCResponse().GetCurrentEventMultiplicity();
2268 Double_t multiplicityCorrEl = fPIDResponse->UseTPCMultiplicityCorrection() ? fPIDResponse->GetTPCResponse().GetMultiplicityCorrectionFast(track,
2269 dEdxEl * etaCorrEl, currEvtMultiplicity) : 1.;
2270 Double_t multiplicityCorrKa = fPIDResponse->UseTPCMultiplicityCorrection() ? fPIDResponse->GetTPCResponse().GetMultiplicityCorrectionFast(track,
2271 dEdxKa * etaCorrKa, currEvtMultiplicity) : 1.;
2272 Double_t multiplicityCorrPi = fPIDResponse->UseTPCMultiplicityCorrection() ? fPIDResponse->GetTPCResponse().GetMultiplicityCorrectionFast(track,
2273 dEdxPi * etaCorrPi, currEvtMultiplicity) : 1.;
2274 Double_t multiplicityCorrMu = fTakeIntoAccountMuons && fPIDResponse->UseTPCMultiplicityCorrection() ?
2275 fPIDResponse->GetTPCResponse().GetMultiplicityCorrectionFast(track, dEdxMu * etaCorrMu, currEvtMultiplicity) : 1.;
2276 Double_t multiplicityCorrPr = fPIDResponse->UseTPCMultiplicityCorrection() ? fPIDResponse->GetTPCResponse().GetMultiplicityCorrectionFast(track,
2277 dEdxPr * etaCorrPr, currEvtMultiplicity) : 1.;
2279 Double_t multiplicityCorrSigmaEl = fPIDResponse->UseTPCMultiplicityCorrection() ?
2280 fPIDResponse->GetTPCResponse().GetMultiplicitySigmaCorrectionFast(dEdxEl * etaCorrEl, currEvtMultiplicity) : 1.;
2281 Double_t multiplicityCorrSigmaKa = fPIDResponse->UseTPCMultiplicityCorrection() ?
2282 fPIDResponse->GetTPCResponse().GetMultiplicitySigmaCorrectionFast(dEdxKa * etaCorrKa, currEvtMultiplicity) : 1.;
2283 Double_t multiplicityCorrSigmaPi = fPIDResponse->UseTPCMultiplicityCorrection() ?
2284 fPIDResponse->GetTPCResponse().GetMultiplicitySigmaCorrectionFast(dEdxPi * etaCorrPi, currEvtMultiplicity) : 1.;
2285 Double_t multiplicityCorrSigmaMu = fTakeIntoAccountMuons && fPIDResponse->UseTPCMultiplicityCorrection() ?
2286 fPIDResponse->GetTPCResponse().GetMultiplicitySigmaCorrectionFast(dEdxMu * etaCorrMu, currEvtMultiplicity) : 1.;
2287 Double_t multiplicityCorrSigmaPr = fPIDResponse->UseTPCMultiplicityCorrection() ?
2288 fPIDResponse->GetTPCResponse().GetMultiplicitySigmaCorrectionFast(dEdxPr * etaCorrPr, currEvtMultiplicity) : 1.;
2290 // Scale multiplicity correction factors, if desired (and multiplicity correction functions are to be used, otherwise it is not possible!)
2291 if (fPIDResponse->UseTPCMultiplicityCorrection() && TMath::Abs(fSystematicScalingMultCorrection - 1.0) > fgkEpsilon) {
2292 // Since we do not want to scale the splines with this, but only the multiplicity variation, only scale the deviation of the correction factor!
2293 // E.g. if we would have a flat mult depence fix at 1.0, we would shift the whole thing equal to shifting the splines by the same factor!
2295 multiplicityCorrEl = 1.0 + fSystematicScalingMultCorrection * (multiplicityCorrEl - 1.0);
2296 multiplicityCorrKa = 1.0 + fSystematicScalingMultCorrection * (multiplicityCorrKa - 1.0);
2297 multiplicityCorrPi = 1.0 + fSystematicScalingMultCorrection * (multiplicityCorrPi - 1.0);
2298 multiplicityCorrMu = fTakeIntoAccountMuons ? (1.0 + fSystematicScalingMultCorrection * (multiplicityCorrMu - 1.0)) : 1.0;
2299 multiplicityCorrPr = 1.0 + fSystematicScalingMultCorrection * (multiplicityCorrPr - 1.0);
2302 // eta correction must be enabled in order to use the new sigma parametrisation maps. Since this is the absolute sigma
2303 // for a track calculated with the unscaled paramaters, we have to devide out dEdxExpectedEtaCorrected and then need
2304 // to scale with the multiplicitySigmaCorrFactor * fSystematicScalingEtaSigmaPara. In the end, one has to scale with the
2305 // (modified) dEdx to get the absolute sigma
2306 // This means there is no extra parameter for the multiplicitySigmaCorrFactor, but only for the sigma map itself.
2307 // This is valid, since it appears only as a product. One has to assume a larger systematic shift in case of additional
2308 // multiplicity dependence....
2310 Bool_t doSigmaSystematics = (TMath::Abs(fSystematicScalingEtaSigmaParaBelowThreshold - 1.0) > fgkEpsilon) ||
2311 (TMath::Abs(fSystematicScalingEtaSigmaParaAboveThreshold - 1.0) > fgkEpsilon);
2314 Double_t dEdxElExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
2316 Double_t systematicScalingEtaSigmaParaEl = 1.;
2317 if (doSigmaSystematics) {
2318 Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxElExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
2319 systematicScalingEtaSigmaParaEl = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
2320 + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
2322 Double_t sigmaRelEl = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
2324 / dEdxElExpected * systematicScalingEtaSigmaParaEl * multiplicityCorrSigmaEl;
2327 Double_t dEdxKaExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
2329 Double_t systematicScalingEtaSigmaParaKa = 1.;
2330 if (doSigmaSystematics) {
2331 Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxKaExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
2332 systematicScalingEtaSigmaParaKa = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
2333 + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
2335 Double_t sigmaRelKa = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
2337 / dEdxKaExpected * systematicScalingEtaSigmaParaKa * multiplicityCorrSigmaKa;
2340 Double_t dEdxPiExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
2342 Double_t systematicScalingEtaSigmaParaPi = 1.;
2343 if (doSigmaSystematics) {
2344 Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxPiExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
2345 systematicScalingEtaSigmaParaPi = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
2346 + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
2348 Double_t sigmaRelPi = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
2350 / dEdxPiExpected * systematicScalingEtaSigmaParaPi * multiplicityCorrSigmaPi;
2353 Double_t sigmaRelMu = 999.;
2354 if (fTakeIntoAccountMuons) {
2355 Double_t dEdxMuExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault,
2357 Double_t systematicScalingEtaSigmaParaMu = 1.;
2358 if (doSigmaSystematics) {
2359 Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxMuExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
2360 systematicScalingEtaSigmaParaMu = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
2361 + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
2363 sigmaRelMu = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
2364 / dEdxMuExpected * systematicScalingEtaSigmaParaMu * multiplicityCorrSigmaMu;
2368 Double_t dEdxPrExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
2370 Double_t systematicScalingEtaSigmaParaPr = 1.;
2371 if (doSigmaSystematics) {
2372 Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxPrExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
2373 systematicScalingEtaSigmaParaPr = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
2374 + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
2376 Double_t sigmaRelPr = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
2378 / dEdxPrExpected * systematicScalingEtaSigmaParaPr * multiplicityCorrSigmaPr;
2380 // Now scale the (possibly modified) spline values with the (possibly modified) correction factors
2381 dEdxEl *= etaCorrEl * multiplicityCorrEl;
2382 dEdxKa *= etaCorrKa * multiplicityCorrKa;
2383 dEdxPi *= etaCorrPi * multiplicityCorrPi;
2384 dEdxMu *= etaCorrMu * multiplicityCorrMu;
2385 dEdxPr *= etaCorrPr * multiplicityCorrPr;
2387 // Finally, get the absolute sigma
2388 sigmaEl = sigmaRelEl * dEdxEl;
2389 sigmaKa = sigmaRelKa * dEdxKa;
2390 sigmaPi = sigmaRelPi * dEdxPi;
2391 sigmaMu = sigmaRelMu * dEdxMu;
2392 sigmaPr = sigmaRelPr * dEdxPr;
2396 // No systematic studies on expected signal - just take it as it comve from the TPCPIDResponse
2397 dEdxEl = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
2398 fPIDResponse->UseTPCEtaCorrection(),
2399 fPIDResponse->UseTPCMultiplicityCorrection());
2400 dEdxKa = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
2401 fPIDResponse->UseTPCEtaCorrection(),
2402 fPIDResponse->UseTPCMultiplicityCorrection());
2403 dEdxPi = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
2404 fPIDResponse->UseTPCEtaCorrection(),
2405 fPIDResponse->UseTPCMultiplicityCorrection());
2406 dEdxMu = !fTakeIntoAccountMuons ? -1 :
2407 fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault,
2408 fPIDResponse->UseTPCEtaCorrection(),
2409 fPIDResponse->UseTPCMultiplicityCorrection());
2410 dEdxPr = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
2411 fPIDResponse->UseTPCEtaCorrection(),
2412 fPIDResponse->UseTPCMultiplicityCorrection());
2414 sigmaEl = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
2415 fPIDResponse->UseTPCEtaCorrection(),
2416 fPIDResponse->UseTPCMultiplicityCorrection());
2417 sigmaKa = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
2418 fPIDResponse->UseTPCEtaCorrection(),
2419 fPIDResponse->UseTPCMultiplicityCorrection());
2420 sigmaPi = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
2421 fPIDResponse->UseTPCEtaCorrection(),
2422 fPIDResponse->UseTPCMultiplicityCorrection());
2423 sigmaMu = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault,
2424 fPIDResponse->UseTPCEtaCorrection(),
2425 fPIDResponse->UseTPCMultiplicityCorrection());
2426 sigmaPr = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
2427 fPIDResponse->UseTPCEtaCorrection(),
2428 fPIDResponse->UseTPCMultiplicityCorrection());
2431 Double_t deltaPrimeElectron = (dEdxEl > 0) ? dEdxTPC / dEdxEl : -1;
2433 Printf("Error: Expected TPC signal <= 0 for electron hypothesis");
2437 Double_t deltaPrimeKaon = (dEdxKa > 0) ? dEdxTPC / dEdxKa : -1;
2439 Printf("Error: Expected TPC signal <= 0 for kaon hypothesis");
2443 Double_t deltaPrimePion = (dEdxPi > 0) ? dEdxTPC / dEdxPi : -1;
2445 Printf("Error: Expected TPC signal <= 0 for pion hypothesis");
2449 Double_t deltaPrimeProton = (dEdxPr > 0) ? dEdxTPC / dEdxPr : -1;
2451 Printf("Error: Expected TPC signal <= 0 for proton hypothesis");
2456 printf("File: %s, Line: %d: ProcessTrack -> Compute probabilities\n", (char*)__FILE__, __LINE__);
2458 // Use probabilities to weigh the response generation for the different species.
2459 // Also determine the most probable particle type.
2460 Double_t prob[AliPID::kSPECIESC];
2461 for (Int_t i = 0; i < AliPID::kSPECIESC; i++)
2464 fPIDcombined->ComputeProbabilities(track, fPIDResponse, prob);
2466 // Bug: One can set the number of species for PIDcombined, but PIDcombined will call PIDresponse, which writes without testing
2467 // the probs for kSPECIESC (including light nuclei) into the array.
2468 // In this case, when only kSPECIES are considered, the probabilities have to be rescaled!
2469 for (Int_t i = AliPID::kSPECIES; i < AliPID::kSPECIESC; i++)
2472 // If muons are not to be taken into account, just set their probability to zero and normalise the remaining probabilities
2473 if (!fTakeIntoAccountMuons)
2474 prob[AliPID::kMuon] = 0;
2476 Double_t probSum = 0.;
2477 for (Int_t i = 0; i < AliPID::kSPECIES; i++)
2481 for (Int_t i = 0; i < AliPID::kSPECIES; i++)
2486 // If there is no MC information, take the most probable species for the ID
2488 Int_t maxIndex = -1;
2489 for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
2490 if (prob[i] > max) {
2496 // Translate from AliPID numbering to numbering of this class
2498 if (maxIndex == AliPID::kElectron)
2500 else if (maxIndex == AliPID::kKaon)
2502 else if (maxIndex == AliPID::kMuon)
2504 else if (maxIndex == AliPID::kPion)
2506 else if (maxIndex == AliPID::kProton)
2512 // Only take track into account for expectation values, if valid pid response is available.. Otherwise: Set to underflow bin.
2518 //For testing: Swap p<->pT to analyse pure p-dependence => Needs to be removed later
2524 TOFpidInfo tofPIDinfo = GetTOFType(track, fTOFmode);
2526 Double_t entry[fStoreAdditionalJetInformation ? kDataNumAxes : kDataNumAxes - fgkNumJetAxes];
2527 entry[kDataMCID] = binMC;
2528 entry[kDataSelectSpecies] = 0;
2529 entry[kDataPt] = pT;
2530 entry[kDataDeltaPrimeSpecies] = deltaPrimeElectron;
2531 entry[kDataCentrality] = centralityPercentile;
2533 if (fStoreAdditionalJetInformation) {
2534 entry[kDataJetPt] = jetPt;
2536 entry[kDataXi] = xi;
2539 entry[GetIndexOfChargeAxisData()] = trackCharge;
2540 entry[GetIndexOfTOFpidInfoAxisData()] = tofPIDinfo;
2542 fhPIDdataAll->Fill(entry);
2544 entry[kDataSelectSpecies] = 1;
2545 entry[kDataDeltaPrimeSpecies] = deltaPrimeKaon;
2546 fhPIDdataAll->Fill(entry);
2548 entry[kDataSelectSpecies] = 2;
2549 entry[kDataDeltaPrimeSpecies] = deltaPrimePion;
2550 fhPIDdataAll->Fill(entry);
2552 entry[kDataSelectSpecies] = 3;
2553 entry[kDataDeltaPrimeSpecies] = deltaPrimeProton;
2554 fhPIDdataAll->Fill(entry);
2557 // Construct the expected shape for the transition p -> pT
2559 Double_t genEntry[fStoreAdditionalJetInformation ? kGenNumAxes : kGenNumAxes - fgkNumJetAxes];
2560 genEntry[kGenMCID] = binMC;
2561 genEntry[kGenSelectSpecies] = 0;
2562 genEntry[kGenPt] = pT;
2563 genEntry[kGenDeltaPrimeSpecies] = -999;
2564 genEntry[kGenCentrality] = centralityPercentile;
2566 if (fStoreAdditionalJetInformation) {
2567 genEntry[kGenJetPt] = jetPt;
2568 genEntry[kGenZ] = z;
2569 genEntry[kGenXi] = xi;
2572 genEntry[GetIndexOfChargeAxisGen()] = trackCharge;
2573 genEntry[GetIndexOfTOFpidInfoAxisGen()] = tofPIDinfo;
2575 // Generate numGenEntries "responses" with fluctuations around the expected values.
2576 // fgkMaxNumGenEntries = 500 turned out to give reasonable templates even for highest track pT in 15-20 GeV/c jet pT bin.
2577 Int_t numGenEntries = fgkMaxNumGenEntries; // fgkMaxNumGenEntries = 500
2579 /*OLD: Different number of responses depending on pT and jet pT for fgkMaxNumGenEntries = 1000
2580 * => Problem: If threshold to higher number of responses inside a bin (or after rebinning), then the template
2581 * is biased to the higher pT.
2582 // Generate numGenEntries "responses" with fluctuations around the expected values.
2583 // The higher the (transverse) momentum, the more "responses" will be generated in order not to run out of statistics too fast.
2584 Int_t numGenEntries = 10;
2586 // Jets have even worse statistics, therefore, scale numGenEntries further
2588 numGenEntries *= 20;
2589 else if (jetPt >= 20)
2590 numGenEntries *= 10;
2591 else if (jetPt >= 10)
2596 // Do not generate more entries than available in memory!
2597 if (numGenEntries > fgkMaxNumGenEntries)// fgkMaxNumGenEntries = 1000
2598 numGenEntries = fgkMaxNumGenEntries;
2602 ErrorCode errCode = kNoErrors;
2605 printf("File: %s, Line: %d: ProcessTrack -> Generate Responses\n", (char*)__FILE__, __LINE__);
2608 errCode = GenerateDetectorResponse(errCode, 1., sigmaEl / dEdxEl, fGenRespElDeltaPrimeEl, numGenEntries);
2609 errCode = GenerateDetectorResponse(errCode, dEdxEl / dEdxKa, sigmaEl / dEdxKa, fGenRespElDeltaPrimeKa, numGenEntries);
2610 errCode = GenerateDetectorResponse(errCode, dEdxEl / dEdxPi, sigmaEl / dEdxPi, fGenRespElDeltaPrimePi, numGenEntries);
2611 errCode = GenerateDetectorResponse(errCode, dEdxEl / dEdxPr, sigmaEl / dEdxPr, fGenRespElDeltaPrimePr, numGenEntries);
2614 errCode = GenerateDetectorResponse(errCode, dEdxKa / dEdxEl, sigmaKa / dEdxEl, fGenRespKaDeltaPrimeEl, numGenEntries);
2615 errCode = GenerateDetectorResponse(errCode, 1., sigmaKa / dEdxKa, fGenRespKaDeltaPrimeKa, numGenEntries);
2616 errCode = GenerateDetectorResponse(errCode, dEdxKa / dEdxPi, sigmaKa / dEdxPi, fGenRespKaDeltaPrimePi, numGenEntries);
2617 errCode = GenerateDetectorResponse(errCode, dEdxKa / dEdxPr, sigmaKa / dEdxPr, fGenRespKaDeltaPrimePr, numGenEntries);
2620 errCode = GenerateDetectorResponse(errCode, dEdxPi / dEdxEl, sigmaPi / dEdxEl, fGenRespPiDeltaPrimeEl, numGenEntries);
2621 errCode = GenerateDetectorResponse(errCode, dEdxPi / dEdxKa, sigmaPi / dEdxKa, fGenRespPiDeltaPrimeKa, numGenEntries);
2622 errCode = GenerateDetectorResponse(errCode, 1., sigmaPi / dEdxPi, fGenRespPiDeltaPrimePi, numGenEntries);
2623 errCode = GenerateDetectorResponse(errCode, dEdxPi / dEdxPr, sigmaPi / dEdxPr, fGenRespPiDeltaPrimePr, numGenEntries);
2625 // Muons, if desired
2626 if (fTakeIntoAccountMuons) {
2627 errCode = GenerateDetectorResponse(errCode, dEdxMu / dEdxEl, sigmaMu / dEdxEl, fGenRespMuDeltaPrimeEl, numGenEntries);
2628 errCode = GenerateDetectorResponse(errCode, dEdxMu / dEdxKa, sigmaMu / dEdxKa, fGenRespMuDeltaPrimeKa, numGenEntries);
2629 errCode = GenerateDetectorResponse(errCode, dEdxMu / dEdxPi, sigmaMu / dEdxPi, fGenRespMuDeltaPrimePi, numGenEntries);
2630 errCode = GenerateDetectorResponse(errCode, dEdxMu / dEdxPr, sigmaMu / dEdxPr, fGenRespMuDeltaPrimePr, numGenEntries);
2634 errCode = GenerateDetectorResponse(errCode, dEdxPr / dEdxEl, sigmaPr / dEdxEl, fGenRespPrDeltaPrimeEl, numGenEntries);
2635 errCode = GenerateDetectorResponse(errCode, dEdxPr / dEdxKa, sigmaPr / dEdxKa, fGenRespPrDeltaPrimeKa, numGenEntries);
2636 errCode = GenerateDetectorResponse(errCode, dEdxPr / dEdxPi, sigmaPr / dEdxPi, fGenRespPrDeltaPrimePi, numGenEntries);
2637 errCode = GenerateDetectorResponse(errCode, 1., sigmaPr / dEdxPr, fGenRespPrDeltaPrimePr, numGenEntries);
2639 if (errCode != kNoErrors) {
2640 if (errCode == kWarning && fDebug > 1) {
2641 Printf("Warning: Questionable detector response for track, most likely due to very low number of PID clusters! Debug output (dEdx_expected, sigma_expected):");
2644 Printf("Error: Failed to generate detector response for track - skipped! Debug output (dEdx_expected, sigma_expected):");
2647 Printf("Pr: %e, %e", dEdxPr, sigmaPr);
2648 Printf("Pi: %e, %e", dEdxPi, sigmaPi);
2649 Printf("El: %e, %e", dEdxEl, sigmaEl);
2650 Printf("Mu: %e, %e", dEdxMu, sigmaMu);
2651 Printf("Ka: %e, %e", dEdxKa, sigmaKa);
2652 Printf("track: dEdx %f, pTPC %f, eta %f, ncl %d\n", track->GetTPCsignal(), track->GetTPCmomentum(), track->Eta(),
2653 track->GetTPCsignalN());
2656 if (errCode != kWarning) {
2657 fhSkippedTracksForSignalGeneration->Fill(track->GetTPCmomentum(), track->GetTPCsignalN());
2658 return kFALSE;// Skip generated response in case of error
2662 for (Int_t n = 0; n < numGenEntries; n++) {
2663 if (!isMC || !fUseMCidForGeneration) {
2664 // If no MC info is available or shall not be used, use weighting with priors to generate entries for the different species
2665 Double_t rnd = fRandom->Rndm(); // Produce uniformly distributed floating point in ]0, 1]
2667 // Consider generated response as originating from...
2668 if (rnd <= prob[AliPID::kElectron])
2669 genEntry[kGenMCID] = 0; // ... an electron
2670 else if (rnd <= prob[AliPID::kElectron] + prob[AliPID::kKaon])
2671 genEntry[kGenMCID] = 1; // ... a kaon
2672 else if (rnd <= prob[AliPID::kElectron] + prob[AliPID::kKaon] + prob[AliPID::kMuon])
2673 genEntry[kGenMCID] = 2; // ... a muon -> NOTE: prob[AliPID::kMuon] = 0 in case of fTakeIntoAccountMuons = kFALSE
2674 else if (rnd <= prob[AliPID::kElectron] + prob[AliPID::kKaon] + prob[AliPID::kMuon] + prob[AliPID::kPion])
2675 genEntry[kGenMCID] = 3; // ... a pion
2677 genEntry[kGenMCID] = 4; // ... a proton
2681 genEntry[kGenSelectSpecies] = 0;
2682 genEntry[kGenDeltaPrimeSpecies] = fGenRespElDeltaPrimeEl[n];
2683 fhGenEl->Fill(genEntry);
2685 genEntry[kGenSelectSpecies] = 1;
2686 genEntry[kGenDeltaPrimeSpecies] = fGenRespElDeltaPrimeKa[n];
2687 fhGenEl->Fill(genEntry);
2689 genEntry[kGenSelectSpecies] = 2;
2690 genEntry[kGenDeltaPrimeSpecies] = fGenRespElDeltaPrimePi[n];
2691 fhGenEl->Fill(genEntry);
2693 genEntry[kGenSelectSpecies] = 3;
2694 genEntry[kGenDeltaPrimeSpecies] = fGenRespElDeltaPrimePr[n];
2695 fhGenEl->Fill(genEntry);
2698 genEntry[kGenSelectSpecies] = 0;
2699 genEntry[kGenDeltaPrimeSpecies] = fGenRespKaDeltaPrimeEl[n];
2700 fhGenKa->Fill(genEntry);
2702 genEntry[kGenSelectSpecies] = 1;
2703 genEntry[kGenDeltaPrimeSpecies] = fGenRespKaDeltaPrimeKa[n];
2704 fhGenKa->Fill(genEntry);
2706 genEntry[kGenSelectSpecies] = 2;
2707 genEntry[kGenDeltaPrimeSpecies] = fGenRespKaDeltaPrimePi[n];
2708 fhGenKa->Fill(genEntry);
2710 genEntry[kGenSelectSpecies] = 3;
2711 genEntry[kGenDeltaPrimeSpecies] = fGenRespKaDeltaPrimePr[n];
2712 fhGenKa->Fill(genEntry);
2715 genEntry[kGenSelectSpecies] = 0;
2716 genEntry[kGenDeltaPrimeSpecies] = fGenRespPiDeltaPrimeEl[n];
2717 fhGenPi->Fill(genEntry);
2719 genEntry[kGenSelectSpecies] = 1;
2720 genEntry[kGenDeltaPrimeSpecies] = fGenRespPiDeltaPrimeKa[n];
2721 fhGenPi->Fill(genEntry);
2723 genEntry[kGenSelectSpecies] = 2;
2724 genEntry[kGenDeltaPrimeSpecies] = fGenRespPiDeltaPrimePi[n];
2725 fhGenPi->Fill(genEntry);
2727 genEntry[kGenSelectSpecies] = 3;
2728 genEntry[kGenDeltaPrimeSpecies] = fGenRespPiDeltaPrimePr[n];
2729 fhGenPi->Fill(genEntry);
2731 if (fTakeIntoAccountMuons) {
2732 // Muons, if desired
2733 genEntry[kGenSelectSpecies] = 0;
2734 genEntry[kGenDeltaPrimeSpecies] = fGenRespMuDeltaPrimeEl[n];
2735 fhGenMu->Fill(genEntry);
2737 genEntry[kGenSelectSpecies] = 1;
2738 genEntry[kGenDeltaPrimeSpecies] = fGenRespMuDeltaPrimeKa[n];
2739 fhGenMu->Fill(genEntry);
2741 genEntry[kGenSelectSpecies] = 2;
2742 genEntry[kGenDeltaPrimeSpecies] = fGenRespMuDeltaPrimePi[n];
2743 fhGenMu->Fill(genEntry);
2745 genEntry[kGenSelectSpecies] = 3;
2746 genEntry[kGenDeltaPrimeSpecies] = fGenRespMuDeltaPrimePr[n];
2747 fhGenMu->Fill(genEntry);
2751 genEntry[kGenSelectSpecies] = 0;
2752 genEntry[kGenDeltaPrimeSpecies] = fGenRespPrDeltaPrimeEl[n];
2753 fhGenPr->Fill(genEntry);
2755 genEntry[kGenSelectSpecies] = 1;
2756 genEntry[kGenDeltaPrimeSpecies] = fGenRespPrDeltaPrimeKa[n];
2757 fhGenPr->Fill(genEntry);
2759 genEntry[kGenSelectSpecies] = 2;
2760 genEntry[kGenDeltaPrimeSpecies] = fGenRespPrDeltaPrimePi[n];
2761 fhGenPr->Fill(genEntry);
2763 genEntry[kGenSelectSpecies] = 3;
2764 genEntry[kGenDeltaPrimeSpecies] = fGenRespPrDeltaPrimePr[n];
2765 fhGenPr->Fill(genEntry);
2769 printf("File: %s, Line: %d: ProcessTrack -> Done\n", (char*)__FILE__, __LINE__);
2775 //_____________________________________________________________________________
2776 Bool_t AliAnalysisTaskPID::SetConvolutedGaussLambdaParameter(Double_t lambda)
2778 // Set the lambda parameter of the convolution to the desired value. Automatically
2779 // calculates the parameters for the transition (restricted) gauss -> convoluted gauss.
2780 fConvolutedGaussTransitionPars[2] = lambda;
2782 // Save old parameters and settings of function to restore them later:
2783 Double_t* oldFuncParams = new Double_t[fkConvolutedGausNPar];
2784 for (Int_t i = 0; i < fkConvolutedGausNPar; i++)
2785 oldFuncParams[i] = fConvolutedGausDeltaPrime->GetParameter(i);
2786 Int_t oldFuncNpx = fConvolutedGausDeltaPrime->GetNpx();
2787 Double_t oldFuncRangeLow = 0, oldFuncRangeUp = 100;
2788 fConvolutedGausDeltaPrime->GetRange(oldFuncRangeLow, oldFuncRangeUp);
2790 // Choose some sufficiently large range
2791 const Double_t rangeStart = 0.5;
2792 const Double_t rangeEnd = 2.0;
2794 // To get the parameters for the transition, just choose arbitrarily input parameters for mu and sigma
2795 // (it makes sense to choose typical values). The ratio sigma_gauss / sigma_convolution is independent
2796 // of mu and as well the difference mu_gauss - mu_convolution.
2797 Double_t muInput = 1.0;
2798 Double_t sigmaInput = fgkSigmaReferenceForTransitionPars;
2801 // Step 1: Generate distribution with input parameters
2802 const Int_t nPar = 3;
2803 Double_t inputPar[nPar] = { muInput, sigmaInput, lambda };
2805 TH1D* hInput = new TH1D("hInput", "Input distribution", 2000, rangeStart, rangeEnd);
2807 fConvolutedGausDeltaPrime->SetParameters(inputPar);
2808 fConvolutedGausDeltaPrime->SetRange(rangeStart, rangeEnd);
2809 fConvolutedGausDeltaPrime->SetNpx(2000);
2812 // The resolution and mean of the AliPIDResponse are determined in finite intervals
2813 // of ncl (also second order effects due to finite dEdx and tanTheta).
2814 // Take this into account for the transition parameters via assuming an approximately flat
2815 // distritubtion in ncl in this interval.
2816 // NOTE: The ncl interval should be the same as the one used for the sigma map creation!
2817 const Int_t nclStart = 151;
2818 const Int_t nclEnd = 160;
2819 const Int_t nclSteps = (nclEnd - nclStart) + 1;
2820 for (Int_t ncl = nclStart; ncl <= nclEnd; ncl++) {
2821 // Resolution scales with 1/sqrt(ncl)
2822 fConvolutedGausDeltaPrime->SetParameter(1, inputPar[1] * sqrt(nclEnd) / sqrt(ncl));
2823 TH1* hProbDensity = fConvolutedGausDeltaPrime->GetHistogram();
2825 for (Int_t i = 0; i < 50000000 / nclSteps; i++)
2826 hInput->Fill(hProbDensity->GetRandom());
2830 TH1* hProbDensity = fConvolutedGausDeltaPrime->GetHistogram();
2832 for (Int_t i = 0; i < 50000000; i++)
2833 hInput->Fill(hProbDensity->GetRandom());
2835 // Step 2: Fit generated distribution with restricted gaussian
2836 Int_t maxBin = hInput->GetMaximumBin();
2837 Double_t max = hInput->GetBinContent(maxBin);
2839 UChar_t usedBins = 1;
2841 max += hInput->GetBinContent(maxBin - 1);
2844 if (maxBin < hInput->GetNbinsX()) {
2845 max += hInput->GetBinContent(maxBin + 1);
2850 // NOTE: The range (<-> fraction of maximum) should be the same
2851 // as for the spline and eta maps creation
2852 const Double_t lowThreshold = hInput->GetXaxis()->GetBinLowEdge(hInput->FindFirstBinAbove(0.1 * max));
2853 const Double_t highThreshold = hInput->GetXaxis()->GetBinUpEdge(hInput->FindLastBinAbove(0.1 * max));
2855 TFitResultPtr fitResGaussFirstStep = hInput->Fit("gaus", "QNRS", "", lowThreshold, highThreshold);
2857 TFitResultPtr fitResGauss;
2859 if ((Int_t)fitResGaussFirstStep == 0) {
2860 TF1 fGauss("fGauss", "[0]*TMath::Gaus(x, [1], [2], 1)", rangeStart, rangeEnd);
2861 fGauss.SetParameter(0, fitResGaussFirstStep->GetParams()[0]);
2862 fGauss.SetParError(0, fitResGaussFirstStep->GetErrors()[0]);
2863 fGauss.SetParameter(2, fitResGaussFirstStep->GetParams()[2]);
2864 fGauss.SetParError(2, fitResGaussFirstStep->GetErrors()[2]);
2866 fGauss.FixParameter(1, fitResGaussFirstStep->GetParams()[1]);
2867 fitResGauss = hInput->Fit(&fGauss, "QNS", "s", rangeStart, rangeEnd);
2870 fitResGauss = hInput->Fit("gaus", "QNRS", "same", rangeStart, rangeEnd);
2872 //OLD TFitResultPtr fitResGauss = hInput->Fit("gaus", "QNRS", "", hInput->GetXaxis()->GetBinLowEdge(hInput->FindFirstBinAbove(0.1 * max)),
2873 // hInput->GetXaxis()->GetBinUpEdge(hInput->FindLastBinAbove(0.1 * max)));
2876 // Step 3: Use parameters from gaussian fit to obtain parameters for the transition "restricted gauss" -> "convoluted gauss"
2878 // 3.1 The ratio sigmaInput / sigma_gaussFit ONLY depends on lambda (which is fixed per period) -> Calculate this first
2879 // for an arbitrary (here: typical) sigma. The ratio is then ~the same for ALL sigma for given lambda!
2880 if ((Int_t)fitResGauss != 0) {
2881 AliError("Not able to calculate parameters for the transition \"restricted gauss\" -> \"convoluted gauss\": Gauss Fit failed!\n");
2882 fConvolutedGausDeltaPrime->SetParameters(oldFuncParams);
2883 fConvolutedGausDeltaPrime->SetNpx(oldFuncNpx);
2884 fConvolutedGausDeltaPrime->SetRange(oldFuncRangeLow, oldFuncRangeUp);
2887 delete [] oldFuncParams;
2892 if (fitResGauss->GetParams()[2] <= 0) {
2893 AliError("Not able to calculate parameters for the transition \"restricted gauss\" -> \"convoluted gauss\": Sigma of gauss fit <= 0!\n");
2894 fConvolutedGausDeltaPrime->SetParameters(oldFuncParams);
2895 fConvolutedGausDeltaPrime->SetNpx(oldFuncNpx);
2896 fConvolutedGausDeltaPrime->SetRange(oldFuncRangeLow, oldFuncRangeUp);
2899 delete [] oldFuncParams;
2904 // sigma correction factor
2905 fConvolutedGaussTransitionPars[1] = sigmaInput / fitResGauss->GetParams()[2];
2907 // 3.2 Now that sigma und lambda are determined, one can calculate mu by shifting the maximum to the desired position,
2908 // i.e. the maximum of the input distribution should coincide with that of the re-calculated distribution,
2909 // which is achieved by getting the same mu for the same sigma.
2910 // NOTE: For fixed lambda, the shift is proportional to sigma and independent of mu!
2911 // So, one can calculate the shift for an arbitrary fixed (here: typical)
2912 // sigma and then simply use this shift for any other sigma by scaling it correspondingly!!!
2914 // Mu shift correction:
2915 // Shift in mu (difference between mean of gauss and mean of convolution) is proportional to sigma!
2916 // Thus, choose a reference sigma (typical -> 0.05), such that for arbitrary sigma one can simple scale
2917 // this shift correction with sigma / referenceSigma.
2918 fConvolutedGaussTransitionPars[0] = (fitResGauss->GetParams()[1] - muInput);
2921 /*Changed on 03.07.2013
2923 // Maximum of fConvolutedGausDeltaPrime should agree with maximum of input
2924 Double_t par[nPar] = { fitResGauss->GetParams()[1], // just as a guess of the maximum position
2928 fConvolutedGausDeltaPrime->SetParameters(par);
2930 Double_t maxXInput = fConvolutedGausDeltaPrime->GetMaximumX(TMath::Max(0.001, muInput - 3. * sigmaInput),
2931 muInput + 10. * sigmaInput,
2934 // Maximum shifts proportional to sigma and is linear in mu (~mean of gauss)
2935 // Maximum should be typically located within [gaussMean, gaussMean + 3 gaussSigma].
2936 // -> Larger search range for safety reasons (also: sigma and/or mean might be not 100% accurate).
2937 Double_t maxXconvoluted = fConvolutedGausDeltaPrime->GetMaximumX(TMath::Max(0.001,
2938 fitResGauss->GetParams()[1] - 3. * fitResGauss->GetParams()[2]),
2939 fitResGauss->GetParams()[1] + 10. * fitResGauss->GetParams()[2],
2941 if (maxXconvoluted <= 0) {
2942 AliError("Not able to calculate parameters for the transition \"restricted gauss\" -> \"convoluted gauss\": Maximum of fConvolutedGausDeltaPrime <= 0!\n");
2944 fConvolutedGausDeltaPrime->SetParameters(oldFuncParams);
2945 fConvolutedGausDeltaPrime->SetNpx(oldFuncNpx);
2946 fConvolutedGausDeltaPrime->SetRange(oldFuncRangeLow, oldFuncRangeUp);
2949 delete [] oldFuncParams;
2954 // maxX perfectly shifts as par[0] (scaled by sigma) -> Can shift maxX to input value.
2955 // Mu shift correction:
2956 fConvolutedGaussTransitionPars[0] = maxXconvoluted - maxXInput;
2961 fConvolutedGausDeltaPrime->SetParameters(oldFuncParams);
2962 fConvolutedGausDeltaPrime->SetNpx(oldFuncNpx);
2963 fConvolutedGausDeltaPrime->SetRange(oldFuncRangeLow, oldFuncRangeUp);
2966 delete [] oldFuncParams;
2972 //_____________________________________________________________________________
2973 AliAnalysisTaskPID::ErrorCode AliAnalysisTaskPID::SetParamsForConvolutedGaus(Double_t gausMean, Double_t gausSigma)
2975 // Set parameters for convoluted gauss using parameters for a pure gaussian.
2976 // If SetConvolutedGaussLambdaParameter has not been called before to initialise the translation parameters,
2977 // some default parameters will be used and an error will show up.
2980 printf("File: %s, Line: %d: SetParamsForConvolutedGaus: mean %e, sigma %e\n", (char*)__FILE__, __LINE__, gausMean, gausSigma);
2982 if (fConvolutedGaussTransitionPars[1] < -998) {
2983 AliError("Transition parameters not initialised! Default parameters will be used. Please call SetConvolutedGaussLambdaParameter(...) before any calculations!");
2984 SetConvolutedGaussLambdaParameter(2.0);
2985 AliError(Form("Parameters set to:\n[0]: %f\n[1]: %f\n[2]: %f\n", fConvolutedGaussTransitionPars[0],
2986 fConvolutedGaussTransitionPars[1], fConvolutedGaussTransitionPars[2]));
2989 Double_t par[fkConvolutedGausNPar];
2990 par[2] = fConvolutedGaussTransitionPars[2];
2991 par[1] = fConvolutedGaussTransitionPars[1] * gausSigma;
2992 // maxX perfectly shifts as par[0] (scaled by sigma) -> Can shift maxX so that it sits at the right place.
2993 par[0] = gausMean - fConvolutedGaussTransitionPars[0] * par[1] / fgkSigmaReferenceForTransitionPars;
2995 ErrorCode errCode = kNoErrors;
2996 fConvolutedGausDeltaPrime->SetParameters(par);
2999 printf("File: %s, Line: %d: SetParamsForConvolutedGaus -> Parameters set to: %e, %e, %e (transition pars: %e, %e, %e, %e)\n",
3000 (char*)__FILE__, __LINE__, par[0], par[1], par[2], fConvolutedGaussTransitionPars[0], fConvolutedGaussTransitionPars[1],
3001 fConvolutedGaussTransitionPars[2], fgkSigmaReferenceForTransitionPars);
3003 fConvolutedGausDeltaPrime->SetNpx(20); // Small value speeds up following algorithm (valid, since extrema far apart)
3005 // Accuracy of 10^-5 is enough to get 0.1% precise peak for MIPS w.r.t. to dEdx = 2000 of protons
3006 // (should boost up the algorithm, because 10^-10 is the default value!)
3007 Double_t maxX= fConvolutedGausDeltaPrime->GetMaximumX(TMath::Max(0.001, gausMean - 2. * gausSigma),
3008 gausMean + 6. * gausSigma, 1.0E-5);
3010 const Double_t maximum = fConvolutedGausDeltaPrime->Eval(maxX);
3011 const Double_t maximumFraction = maximum * fAccuracyNonGaussianTail;
3013 // Estimate lower boundary for subsequent search:
3014 Double_t lowBoundSearchBoundLow = TMath::Max(1e-4, maxX - 5. * gausSigma);
3015 Double_t lowBoundSearchBoundUp = maxX;
3017 Bool_t lowerBoundaryFixedAtZero = kFALSE;
3019 while (fConvolutedGausDeltaPrime->Eval(lowBoundSearchBoundLow) >= maximumFraction) {
3020 if (lowBoundSearchBoundLow <= 0) {
3021 // This should only happen to low dEdx particles with very few clusters and therefore large sigma, such that the gauss goes below zero deltaPrime
3022 if (maximum <= 0) { // Something is weired
3023 printf("Error generating signal: maximum is <= 0!\n");
3027 const Double_t valueAtZero = fConvolutedGausDeltaPrime->Eval(0);
3028 if (valueAtZero / maximum > 0.05) {
3029 // Too large fraction below zero deltaPrime. Signal generation cannot be reliable in this case
3030 printf("Error generating signal: Too large fraction below zero deltaPrime: convGauss(0) / convGauss(max) = %e / %e = %e!\n",
3031 valueAtZero, maximum, valueAtZero / maximum);
3037 printf("Warning: LowBoundSearchBoundLow gets smaller zero -> Set left boundary to zero! Debug output: maximumFraction * fAccuracyNonGaussianTail = %e * %e = %e maxX %f, par[0] %f, par[1] %f, par[2] %f, gausMean %f, gausSigma %f\n",
3038 fConvolutedGausDeltaPrime->Eval(maxX), fAccuracyNonGaussianTail, maximumFraction, maxX, par[0], par[1], par[2], gausMean, gausSigma);
3041 lowerBoundaryFixedAtZero = kTRUE;
3043 if (errCode != kError)
3049 lowBoundSearchBoundUp -= gausSigma;
3050 lowBoundSearchBoundLow -= gausSigma;
3052 if (lowBoundSearchBoundLow < 0) {
3053 lowBoundSearchBoundLow = 0;
3054 lowBoundSearchBoundUp += gausSigma;
3058 // Determine lower boundary inside estimated range. For small values of the maximum: Need more precision, since finer binning!
3059 Double_t rangeStart = lowerBoundaryFixedAtZero ? 0 :
3060 fConvolutedGausDeltaPrime->GetX(maximumFraction, lowBoundSearchBoundLow, lowBoundSearchBoundUp, (maxX < 0.4) ? 1e-5 : 0.001);
3062 // .. and the same for the upper boundary
3063 Double_t rangeEnd = 0;
3064 // If distribution starts beyond upper boundary, everything ends up in the overflow bin. So, just reduce range and Npx to minimum
3065 if (rangeStart > fkDeltaPrimeUpLimit) {
3066 rangeEnd = rangeStart + 0.00001;
3067 fConvolutedGausDeltaPrime->SetRange(rangeStart,rangeEnd);
3068 fConvolutedGausDeltaPrime->SetNpx(4);
3071 // Estimate upper boundary for subsequent search:
3072 Double_t upBoundSearchBoundUp = maxX + 5 * gausSigma;
3073 Double_t upBoundSearchBoundLow = maxX;
3074 while (fConvolutedGausDeltaPrime->Eval(upBoundSearchBoundUp) >= maximumFraction) {
3075 upBoundSearchBoundUp += gausSigma;
3076 upBoundSearchBoundLow += gausSigma;
3079 // For small values of the maximum: Need more precision, since finer binning!
3080 rangeEnd = fConvolutedGausDeltaPrime->GetX(maximumFraction, upBoundSearchBoundLow, upBoundSearchBoundUp, (maxX < 0.4) ? 1e-5 : 0.001);
3082 fConvolutedGausDeltaPrime->SetRange(rangeStart,rangeEnd);
3083 fConvolutedGausDeltaPrime->SetNpx(fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindBin(rangeEnd)
3084 - fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindBin(rangeStart) + 1);
3085 //fConvolutedGausDeltaPrime->SetNpx((rangeEnd - rangeStart) / fDeltaPrimeBinWidth + 1);
3089 printf("File: %s, Line: %d: SetParamsForConvolutedGaus -> range %f - %f, error code %d\n", (char*)__FILE__, __LINE__,
3090 rangeStart, rangeEnd, errCode);
3096 //________________________________________________________________________
3097 void AliAnalysisTaskPID::SetUpGenHist(THnSparse* hist, Double_t* binsPt, Double_t* binsDeltaPrime, Double_t* binsCent, Double_t* binsJetPt) const
3099 // Sets bin limits for axes which are not standard binned and the axes titles.
3101 hist->SetBinEdges(kGenPt, binsPt);
3102 hist->SetBinEdges(kGenDeltaPrimeSpecies, binsDeltaPrime);
3103 hist->SetBinEdges(kGenCentrality, binsCent);
3105 if (fStoreAdditionalJetInformation)
3106 hist->SetBinEdges(kGenJetPt, binsJetPt);
3109 hist->GetAxis(kGenMCID)->SetTitle("MC PID");
3110 hist->GetAxis(kGenMCID)->SetBinLabel(1, "e");
3111 hist->GetAxis(kGenMCID)->SetBinLabel(2, "K");
3112 hist->GetAxis(kGenMCID)->SetBinLabel(3, "#mu");
3113 hist->GetAxis(kGenMCID)->SetBinLabel(4, "#pi");
3114 hist->GetAxis(kGenMCID)->SetBinLabel(5, "p");
3116 hist->GetAxis(kGenSelectSpecies)->SetTitle("Select Species");
3117 hist->GetAxis(kGenSelectSpecies)->SetBinLabel(1, "e");
3118 hist->GetAxis(kGenSelectSpecies)->SetBinLabel(2, "K");
3119 hist->GetAxis(kGenSelectSpecies)->SetBinLabel(3, "#pi");
3120 hist->GetAxis(kGenSelectSpecies)->SetBinLabel(4, "p");
3122 hist->GetAxis(kGenPt)->SetTitle("p_{T} (GeV/c)");
3124 hist->GetAxis(kGenDeltaPrimeSpecies)->SetTitle("TPC #Delta'_{species} (arb. unit)");
3126 hist->GetAxis(kGenCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
3128 if (fStoreAdditionalJetInformation) {
3129 hist->GetAxis(kGenJetPt)->SetTitle("p_{T}^{jet} (GeV/c)");
3131 hist->GetAxis(kGenZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
3133 hist->GetAxis(kGenXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
3136 hist->GetAxis(GetIndexOfChargeAxisGen())->SetTitle("Charge (e_{0})");
3138 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetTitle("TOF PID Info");
3139 // Offset is (TMath::Abs(kNoTOFinfo) + 1), such that bin 1 (= first label) corresponds to kNoTOFinfo (< 0)
3140 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetBinLabel(kNoTOFinfo + (TMath::Abs(kNoTOFinfo) + 1), "No TOF Info");
3141 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetBinLabel(kNoTOFpid + (TMath::Abs(kNoTOFinfo) + 1), "No TOF PID");
3142 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetBinLabel(kTOFpion + (TMath::Abs(kNoTOFinfo) + 1), "#pi");
3143 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetBinLabel(kTOFkaon + (TMath::Abs(kNoTOFinfo) + 1), "K");
3144 hist->GetAxis(GetIndexOfTOFpidInfoAxisGen())->SetBinLabel(kTOFproton + (TMath::Abs(kNoTOFinfo) + 1), "p");
3148 //________________________________________________________________________
3149 void AliAnalysisTaskPID::SetUpGenYieldHist(THnSparse* hist, Double_t* binsPt, Double_t* binsCent, Double_t* binsJetPt) const
3151 // Sets bin limits for axes which are not standard binned and the axes titles.
3153 hist->SetBinEdges(kGenYieldPt, binsPt);
3154 hist->SetBinEdges(kGenYieldCentrality, binsCent);
3155 if (fStoreAdditionalJetInformation)
3156 hist->SetBinEdges(kGenYieldJetPt, binsJetPt);
3158 for (Int_t i = 0; i < 5; i++)
3159 hist->GetAxis(kGenYieldMCID)->SetBinLabel(i + 1, AliPID::ParticleLatexName(i));
3162 hist->GetAxis(kGenYieldMCID)->SetTitle("MC PID");
3163 hist->GetAxis(kGenYieldPt)->SetTitle("p_{T}^{gen} (GeV/c)");
3164 hist->GetAxis(kGenYieldCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
3166 if (fStoreAdditionalJetInformation) {
3167 hist->GetAxis(kGenYieldJetPt)->SetTitle("p_{T}^{jet, gen} (GeV/c)");
3169 hist->GetAxis(kGenYieldZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
3171 hist->GetAxis(kGenYieldXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
3174 hist->GetAxis(GetIndexOfChargeAxisGenYield())->SetTitle("Charge (e_{0})");
3178 //________________________________________________________________________
3179 void AliAnalysisTaskPID::SetUpHist(THnSparse* hist, Double_t* binsPt, Double_t* binsDeltaPrime, Double_t* binsCent, Double_t* binsJetPt) const
3181 // Sets bin limits for axes which are not standard binned and the axes titles.
3183 hist->SetBinEdges(kDataPt, binsPt);
3184 hist->SetBinEdges(kDataDeltaPrimeSpecies, binsDeltaPrime);
3185 hist->SetBinEdges(kDataCentrality, binsCent);
3187 if (fStoreAdditionalJetInformation)
3188 hist->SetBinEdges(kDataJetPt, binsJetPt);
3191 hist->GetAxis(kDataMCID)->SetTitle("MC PID");
3192 hist->GetAxis(kDataMCID)->SetBinLabel(1, "e");
3193 hist->GetAxis(kDataMCID)->SetBinLabel(2, "K");
3194 hist->GetAxis(kDataMCID)->SetBinLabel(3, "#mu");
3195 hist->GetAxis(kDataMCID)->SetBinLabel(4, "#pi");
3196 hist->GetAxis(kDataMCID)->SetBinLabel(5, "p");
3198 hist->GetAxis(kDataSelectSpecies)->SetTitle("Select Species");
3199 hist->GetAxis(kDataSelectSpecies)->SetBinLabel(1, "e");
3200 hist->GetAxis(kDataSelectSpecies)->SetBinLabel(2, "K");
3201 hist->GetAxis(kDataSelectSpecies)->SetBinLabel(3, "#pi");
3202 hist->GetAxis(kDataSelectSpecies)->SetBinLabel(4, "p");
3204 hist->GetAxis(kDataPt)->SetTitle("p_{T} (GeV/c)");
3206 hist->GetAxis(kDataDeltaPrimeSpecies)->SetTitle("TPC #Delta'_{species} (arb. unit)");
3208 hist->GetAxis(kDataCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
3210 if (fStoreAdditionalJetInformation) {
3211 hist->GetAxis(kDataJetPt)->SetTitle("p_{T}^{jet} (GeV/c)");
3213 hist->GetAxis(kDataZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
3215 hist->GetAxis(kDataXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
3218 hist->GetAxis(GetIndexOfChargeAxisData())->SetTitle("Charge (e_{0})");
3220 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetTitle("TOF PID Info");
3221 // Offset is (TMath::Abs(kNoTOFinfo) + 1), such that bin 1 (= first label) corresponds to kNoTOFinfo (< 0)
3222 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetBinLabel(kNoTOFinfo + (TMath::Abs(kNoTOFinfo) + 1), "No TOF Info");
3223 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetBinLabel(kNoTOFpid + (TMath::Abs(kNoTOFinfo) + 1), "No TOF PID");
3224 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetBinLabel(kTOFpion + (TMath::Abs(kNoTOFinfo) + 1), "#pi");
3225 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetBinLabel(kTOFkaon + (TMath::Abs(kNoTOFinfo) + 1), "K");
3226 hist->GetAxis(GetIndexOfTOFpidInfoAxisData())->SetBinLabel(kTOFproton + (TMath::Abs(kNoTOFinfo) + 1), "p");
3230 //________________________________________________________________________
3231 void AliAnalysisTaskPID::SetUpPtResHist(THnSparse* hist, Double_t* binsPt, Double_t* binsJetPt, Double_t* binsCent) const
3233 // Sets bin limits for axes which are not standard binned and the axes titles.
3235 hist->SetBinEdges(kPtResJetPt, binsJetPt);
3236 hist->SetBinEdges(kPtResGenPt, binsPt);
3237 hist->SetBinEdges(kPtResRecPt, binsPt);
3238 hist->SetBinEdges(kPtResCentrality, binsCent);
3241 hist->GetAxis(kPtResJetPt)->SetTitle("p_{T}^{jet, rec} (GeV/c)");
3242 hist->GetAxis(kPtResGenPt)->SetTitle("p_{T}^{gen} (GeV/c)");
3243 hist->GetAxis(kPtResRecPt)->SetTitle("p_{T}^{rec} (GeV/c)");
3245 hist->GetAxis(kPtResCharge)->SetTitle("Charge (e_{0})");
3246 hist->GetAxis(kPtResCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));