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1 | /* $Id$ */ | |
2 | ||
3 | #include <AliPWG0Helper.h> | |
4 | ||
5 | #include <TParticle.h> | |
6 | #include <TParticlePDG.h> | |
7 | #include <TH1.h> | |
8 | #include <TH2.h> | |
9 | #include <TH3.h> | |
10 | #include <TList.h> | |
11 | #include <TTree.h> | |
12 | #include <TBranch.h> | |
13 | #include <TLeaf.h> | |
14 | ||
15 | #include <AliHeader.h> | |
16 | #include <AliStack.h> | |
17 | #include <AliLog.h> | |
18 | ||
19 | #include <AliLog.h> | |
20 | #include <AliESD.h> | |
21 | #include <AliESDEvent.h> | |
22 | #include <AliESDVertex.h> | |
23 | #include <AliVertexerTracks.h> | |
24 | #include <AliMultiplicity.h> | |
25 | ||
26 | #include <AliGenEventHeader.h> | |
27 | #include <AliGenPythiaEventHeader.h> | |
28 | #include <AliGenCocktailEventHeader.h> | |
29 | #include <AliGenDPMjetEventHeader.h> | |
30 | #include <AliESDVZERO.h> | |
31 | ||
32 | //____________________________________________________________________ | |
33 | ClassImp(AliPWG0Helper) | |
34 | ||
35 | Int_t AliPWG0Helper::fgLastProcessType = -1; | |
36 | ||
37 | //____________________________________________________________________ | |
38 | Bool_t AliPWG0Helper::IsEventTriggered(const AliESDEvent* aEsd, Trigger trigger) | |
39 | { | |
40 | // checks if an event has been triggered | |
41 | // this function implements the "offline" methods that use the ESD, other trigger requests are passed to the function prototype with ULong_t | |
42 | ||
43 | Int_t firedChips = 0; | |
44 | Bool_t v0A = kFALSE; | |
45 | Bool_t v0C = kFALSE; | |
46 | ||
47 | // offline triggers have to be dealt with here, because we need the esd pointer | |
48 | if (trigger == kOfflineFASTOR || trigger == kOfflineMB1 || trigger == kOfflineMB2 || trigger == kOfflineMB3) | |
49 | { | |
50 | const AliMultiplicity* mult = aEsd->GetMultiplicity(); | |
51 | if (!mult) | |
52 | { | |
53 | Printf("AliPWG0Helper::IsEventTriggered: ERROR: AliMultiplicity not available"); | |
54 | return kFALSE; | |
55 | } | |
56 | firedChips = mult->GetNumberOfFiredChips(0) + mult->GetNumberOfFiredChips(1); | |
57 | } | |
58 | if (trigger == kOfflineMB1 || trigger == kOfflineMB2 || trigger == kOfflineMB3) | |
59 | { | |
60 | AliESDVZERO* v0Data = aEsd->GetVZEROData(); | |
61 | if (!v0Data) | |
62 | { | |
63 | Printf("AliPWG0Helper::IsEventTriggered: ERROR: AliESDVZERO not available"); | |
64 | return kFALSE; | |
65 | } | |
66 | for (Int_t i=0; i<32; i++) | |
67 | { | |
68 | if (v0Data->BBTriggerV0A(i)) | |
69 | v0A = kTRUE; | |
70 | if (v0Data->BBTriggerV0C(i)) | |
71 | v0C = kTRUE; | |
72 | } | |
73 | } | |
74 | ||
75 | switch (trigger) | |
76 | { | |
77 | case kOfflineFASTOR: | |
78 | { | |
79 | if (firedChips > 0) | |
80 | return kTRUE; | |
81 | break; | |
82 | } | |
83 | case kOfflineMB1: | |
84 | { | |
85 | if ((firedChips > 0) || v0A || v0C) | |
86 | return kTRUE; | |
87 | break; | |
88 | } | |
89 | case kOfflineMB2: | |
90 | { | |
91 | if ((firedChips > 0) && (v0A || v0C)) | |
92 | return kTRUE; | |
93 | break; | |
94 | } | |
95 | case kOfflineMB3: | |
96 | { | |
97 | if ((firedChips > 0) && v0A && v0C) | |
98 | return kTRUE; | |
99 | break; | |
100 | } | |
101 | default: | |
102 | { | |
103 | return IsEventTriggered(aEsd->GetTriggerMask(), trigger); | |
104 | break; | |
105 | } | |
106 | } | |
107 | ||
108 | return kFALSE; | |
109 | } | |
110 | ||
111 | //____________________________________________________________________ | |
112 | Bool_t AliPWG0Helper::IsEventTriggered(ULong64_t triggerMask, Trigger trigger) | |
113 | { | |
114 | // check if the event was triggered | |
115 | // | |
116 | // this function needs the branch fTriggerMask | |
117 | ||
118 | // definitions from p-p.cfg | |
119 | ULong64_t spdFO = (1 << 14); | |
120 | ULong64_t v0left = (1 << 10); | |
121 | ULong64_t v0right = (1 << 11); | |
122 | ||
123 | switch (trigger) | |
124 | { | |
125 | case kAcceptAll: | |
126 | { | |
127 | return kTRUE; | |
128 | break; | |
129 | } | |
130 | case kMB1: | |
131 | { | |
132 | if (triggerMask & spdFO || ((triggerMask & v0left) || (triggerMask & v0right))) | |
133 | return kTRUE; | |
134 | break; | |
135 | } | |
136 | case kMB2: | |
137 | { | |
138 | if (triggerMask & spdFO && ((triggerMask & v0left) || (triggerMask & v0right))) | |
139 | return kTRUE; | |
140 | break; | |
141 | } | |
142 | case kMB3: | |
143 | { | |
144 | if (triggerMask & spdFO && (triggerMask & v0left) && (triggerMask & v0right)) | |
145 | return kTRUE; | |
146 | break; | |
147 | } | |
148 | case kSPDFASTOR: | |
149 | { | |
150 | if (triggerMask & spdFO) | |
151 | return kTRUE; | |
152 | break; | |
153 | } | |
154 | default: | |
155 | Printf("IsEventTriggered: ERROR: Trigger type %d not implemented in this method", (Int_t) trigger); | |
156 | break; | |
157 | } | |
158 | ||
159 | return kFALSE; | |
160 | } | |
161 | ||
162 | //____________________________________________________________________ | |
163 | Bool_t AliPWG0Helper::TestVertex(const AliESDVertex* vertex, AnalysisMode analysisMode, Bool_t debug) | |
164 | { | |
165 | // Checks if a vertex meets the needed quality criteria | |
166 | ||
167 | Float_t requiredZResolution = -1; | |
168 | if (analysisMode & kSPD || analysisMode & kTPCITS) | |
169 | { | |
170 | requiredZResolution = 0.1; | |
171 | } | |
172 | else if (analysisMode & kTPC) | |
173 | requiredZResolution = 10.; | |
174 | ||
175 | // check resolution | |
176 | Double_t zRes = vertex->GetZRes(); | |
177 | ||
178 | if (zRes > requiredZResolution) { | |
179 | if (debug) | |
180 | Printf("AliPWG0Helper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution); | |
181 | return kFALSE; | |
182 | } | |
183 | ||
184 | return kTRUE; | |
185 | } | |
186 | ||
187 | //____________________________________________________________________ | |
188 | const AliESDVertex* AliPWG0Helper::GetVertex(AliESDEvent* aEsd, AnalysisMode analysisMode, Bool_t debug, Bool_t bRedoTPC) | |
189 | { | |
190 | // Get the vertex from the ESD and returns it if the vertex is valid | |
191 | // | |
192 | // Second argument decides which vertex is used (this selects | |
193 | // also the quality criteria that are applied) | |
194 | ||
195 | const AliESDVertex* vertex = 0; | |
196 | if (analysisMode & kSPD || analysisMode & kTPCITS) | |
197 | { | |
198 | vertex = aEsd->GetPrimaryVertexSPD(); | |
199 | if (debug) | |
200 | Printf("AliPWG0Helper::GetVertex: Returning SPD vertex"); | |
201 | } | |
202 | else if (analysisMode & kTPC) | |
203 | { | |
204 | if(bRedoTPC){ | |
205 | if (debug) | |
206 | Printf("AliPWG0Helper::GetVertex: Redoing vertex"); | |
207 | Double_t kBz = aEsd->GetMagneticField(); | |
208 | AliVertexerTracks vertexer(kBz); | |
209 | vertexer.SetTPCMode(); | |
210 | AliESDVertex *vTPC = vertexer.FindPrimaryVertex(aEsd); | |
211 | aEsd->SetPrimaryVertexTPC(vTPC); | |
212 | for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) { | |
213 | AliESDtrack *t = aEsd->GetTrack(i); | |
214 | t->RelateToVertexTPC(vTPC, kBz, kVeryBig); | |
215 | } | |
216 | delete vTPC; | |
217 | } | |
218 | ||
219 | vertex = aEsd->GetPrimaryVertexTPC(); | |
220 | if (debug) | |
221 | Printf("AliPWG0Helper::GetVertex: Returning vertex from tracks"); | |
222 | } | |
223 | else | |
224 | Printf("AliPWG0Helper::GetVertex: ERROR: Invalid second argument %d", analysisMode); | |
225 | ||
226 | if (!vertex) { | |
227 | if (debug) | |
228 | Printf("AliPWG0Helper::GetVertex: No vertex found in ESD"); | |
229 | return 0; | |
230 | } | |
231 | ||
232 | // check Ncontributors | |
233 | if (vertex->GetNContributors() <= 0) { | |
234 | if (debug){ | |
235 | Printf("AliPWG0Helper::GetVertex: NContributors() <= 0: %d",vertex->GetNContributors()); | |
236 | Printf("AliPWG0Helper::GetVertex: NIndices(): %d",vertex->GetNIndices()); | |
237 | vertex->Print(); | |
238 | } | |
239 | return 0; | |
240 | } | |
241 | ||
242 | // check resolution | |
243 | Double_t zRes = vertex->GetZRes(); | |
244 | if (zRes == 0) { | |
245 | Printf("AliPWG0Helper::GetVertex: UNEXPECTED: resolution is 0."); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | if (debug) | |
250 | { | |
251 | Printf("AliPWG0Helper::GetVertex: Returning valid vertex: %s", vertex->GetTitle()); | |
252 | vertex->Print(); | |
253 | } | |
254 | ||
255 | return vertex; | |
256 | } | |
257 | ||
258 | //____________________________________________________________________ | |
259 | Bool_t AliPWG0Helper::IsPrimaryCharged(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug) | |
260 | { | |
261 | // | |
262 | // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack) | |
263 | // shall be counted as a primary particle | |
264 | // | |
265 | // This function or a equivalent should be available in some common place of AliRoot | |
266 | // | |
267 | // WARNING: Call this function only for particles that are among the particles from the event generator! | |
268 | // --> stack->Particle(id) with id < stack->GetNprimary() | |
269 | ||
270 | // if the particle has a daughter primary, we do not want to count it | |
271 | if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries) | |
272 | { | |
273 | if (adebug) | |
274 | printf("Dropping particle because it has a daughter among the primaries.\n"); | |
275 | return kFALSE; | |
276 | } | |
277 | ||
278 | Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode()); | |
279 | ||
280 | ||
281 | // skip quarks and gluon | |
282 | if (pdgCode <= 10 || pdgCode == 21) | |
283 | { | |
284 | if (adebug) | |
285 | printf("Dropping particle because it is a quark or gluon.\n"); | |
286 | return kFALSE; | |
287 | } | |
288 | ||
289 | Int_t status = aParticle->GetStatusCode(); | |
290 | // skip non final state particles.. | |
291 | if(status!=1){ | |
292 | if (adebug) | |
293 | printf("Dropping particle because it is not a final state particle.\n"); | |
294 | return kFALSE; | |
295 | } | |
296 | ||
297 | if (strcmp(aParticle->GetName(),"XXX") == 0) | |
298 | { | |
299 | Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode); | |
300 | return kFALSE; | |
301 | } | |
302 | ||
303 | TParticlePDG* pdgPart = aParticle->GetPDG(); | |
304 | ||
305 | if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0) | |
306 | { | |
307 | Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode); | |
308 | return kFALSE; | |
309 | } | |
310 | ||
311 | if (pdgPart->Charge() == 0) | |
312 | { | |
313 | if (adebug) | |
314 | printf("Dropping particle because it is not charged.\n"); | |
315 | return kFALSE; | |
316 | } | |
317 | ||
318 | return kTRUE; | |
319 | } | |
320 | ||
321 | //____________________________________________________________________ | |
322 | void AliPWG0Helper::CreateProjections(TH3* hist, Bool_t save) | |
323 | { | |
324 | // create projections of 3d hists to all 2d combinations | |
325 | // the histograms are not returned, just use them from memory or use this to create them in a file | |
326 | ||
327 | TH1* proj = hist->Project3D("yx"); | |
328 | proj->SetXTitle(hist->GetXaxis()->GetTitle()); | |
329 | proj->SetYTitle(hist->GetYaxis()->GetTitle()); | |
330 | if (save) | |
331 | proj->Write(); | |
332 | ||
333 | proj = hist->Project3D("zx"); | |
334 | proj->SetXTitle(hist->GetXaxis()->GetTitle()); | |
335 | proj->SetYTitle(hist->GetZaxis()->GetTitle()); | |
336 | if (save) | |
337 | proj->Write(); | |
338 | ||
339 | proj = hist->Project3D("zy"); | |
340 | proj->SetXTitle(hist->GetYaxis()->GetTitle()); | |
341 | proj->SetYTitle(hist->GetZaxis()->GetTitle()); | |
342 | if (save) | |
343 | proj->Write(); | |
344 | } | |
345 | ||
346 | //____________________________________________________________________ | |
347 | void AliPWG0Helper::CreateDividedProjections(TH3* hist, TH3* hist2, const char* axis, Bool_t putErrors, Bool_t save) | |
348 | { | |
349 | // create projections of the 3d hists divides them | |
350 | // axis decides to which plane, if axis is 0 to all planes | |
351 | // the histograms are not returned, just use them from memory or use this to create them in a file | |
352 | ||
353 | if (axis == 0) | |
354 | { | |
355 | CreateDividedProjections(hist, hist2, "yx", putErrors, save); | |
356 | CreateDividedProjections(hist, hist2, "zx", putErrors, save); | |
357 | CreateDividedProjections(hist, hist2, "zy", putErrors, save); | |
358 | ||
359 | return; | |
360 | } | |
361 | ||
362 | TH1* proj = hist->Project3D(axis); | |
363 | ||
364 | if (strlen(axis) == 2) | |
365 | { | |
366 | proj->SetYTitle(GetAxisTitle(hist, axis[0])); | |
367 | proj->SetXTitle(GetAxisTitle(hist, axis[1])); | |
368 | } | |
369 | else if (strlen(axis) == 1) | |
370 | proj->SetXTitle(GetAxisTitle(hist, axis[0])); | |
371 | ||
372 | TH1* proj2 = hist2->Project3D(axis); | |
373 | if (strlen(axis) == 2) | |
374 | { | |
375 | proj2->SetYTitle(GetAxisTitle(hist2, axis[0])); | |
376 | proj2->SetXTitle(GetAxisTitle(hist2, axis[1])); | |
377 | } | |
378 | else if (strlen(axis) == 1) | |
379 | proj2->SetXTitle(GetAxisTitle(hist2, axis[0])); | |
380 | ||
381 | TH1* division = dynamic_cast<TH1*> (proj->Clone(Form("%s_div_%s", proj->GetName(), proj2->GetName()))); | |
382 | //printf("doing axis: %s, x axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsX(), proj2->GetNbinsX(), division->GetXaxis()->GetBinLowEdge(1), proj2->GetXaxis()->GetBinLowEdge(1), division->GetXaxis()->GetBinUpEdge(division->GetNbinsX()), proj2->GetXaxis()->GetBinUpEdge(proj2->GetNbinsX())); | |
383 | //printf("doing axis: %s, y axis has %d %d bins, min %f %f max %f %f\n", axis, division->GetNbinsY(), proj2->GetNbinsY(), division->GetYaxis()->GetBinLowEdge(1), proj2->GetYaxis()->GetBinLowEdge(1), division->GetYaxis()->GetBinUpEdge(division->GetNbinsY()), proj2->GetYaxis()->GetBinUpEdge(proj2->GetNbinsY())); | |
384 | division->Divide(proj, proj2, 1, 1, "B"); | |
385 | division->SetTitle(Form("%s divided %s", proj->GetTitle(), proj2->GetTitle())); | |
386 | ||
387 | if (putErrors) | |
388 | { | |
389 | division->Sumw2(); | |
390 | if (division->GetDimension() == 1) | |
391 | { | |
392 | Int_t nBins = division->GetNbinsX(); | |
393 | for (Int_t i = 1; i <= nBins; ++i) | |
394 | if (proj2->GetBinContent(i) != 0) | |
395 | division->SetBinError(i, TMath::Sqrt(proj->GetBinContent(i)) / proj2->GetBinContent(i)); | |
396 | } | |
397 | else if (division->GetDimension() == 2) | |
398 | { | |
399 | Int_t nBinsX = division->GetNbinsX(); | |
400 | Int_t nBinsY = division->GetNbinsY(); | |
401 | for (Int_t i = 1; i <= nBinsX; ++i) | |
402 | for (Int_t j = 1; j <= nBinsY; ++j) | |
403 | if (proj2->GetBinContent(i, j) != 0) | |
404 | division->SetBinError(i, j, TMath::Sqrt(proj->GetBinContent(i, j)) / proj2->GetBinContent(i, j)); | |
405 | } | |
406 | } | |
407 | ||
408 | if (save) | |
409 | { | |
410 | proj->Write(); | |
411 | proj2->Write(); | |
412 | division->Write(); | |
413 | } | |
414 | } | |
415 | ||
416 | //____________________________________________________________________ | |
417 | const char* AliPWG0Helper::GetAxisTitle(TH3* hist, const char axis) | |
418 | { | |
419 | // returns the title of the axis given in axis (x, y, z) | |
420 | ||
421 | if (axis == 'x') | |
422 | return hist->GetXaxis()->GetTitle(); | |
423 | else if (axis == 'y') | |
424 | return hist->GetYaxis()->GetTitle(); | |
425 | else if (axis == 'z') | |
426 | return hist->GetZaxis()->GetTitle(); | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | ||
432 | AliPWG0Helper::MCProcessType AliPWG0Helper::GetPythiaEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) { | |
433 | ||
434 | AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader); | |
435 | ||
436 | if (!pythiaGenHeader) { | |
437 | printf("AliPWG0Helper::GetProcessType : Unknown gen Header type). \n"); | |
438 | return kInvalidProcess; | |
439 | } | |
440 | ||
441 | ||
442 | Int_t pythiaType = pythiaGenHeader->ProcessType(); | |
443 | fgLastProcessType = pythiaType; | |
444 | MCProcessType globalType = kInvalidProcess; | |
445 | ||
446 | ||
447 | if (adebug) { | |
448 | printf("AliPWG0Helper::GetProcessType : Pythia process type found: %d \n",pythiaType); | |
449 | } | |
450 | ||
451 | ||
452 | if(pythiaType==92||pythiaType==93){ | |
453 | globalType = kSD; | |
454 | } | |
455 | else if(pythiaType==94){ | |
456 | globalType = kDD; | |
457 | } | |
458 | //else if(pythiaType != 91){ // also exclude elastic to be sure... CKB?? | |
459 | else { | |
460 | globalType = kND; | |
461 | } | |
462 | return globalType; | |
463 | } | |
464 | ||
465 | ||
466 | AliPWG0Helper::MCProcessType AliPWG0Helper::GetDPMjetEventProcessType(AliGenEventHeader* aHeader, Bool_t adebug) { | |
467 | // | |
468 | // get the process type of the event. | |
469 | // | |
470 | ||
471 | // can only read pythia headers, either directly or from cocktalil header | |
472 | AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader); | |
473 | ||
474 | if (!dpmJetGenHeader) { | |
475 | printf("AliPWG0Helper::GetDPMjetProcessType : Unknown header type (not DPMjet or). \n"); | |
476 | return kInvalidProcess; | |
477 | } | |
478 | ||
479 | Int_t dpmJetType = dpmJetGenHeader->ProcessType(); | |
480 | fgLastProcessType = dpmJetType; | |
481 | MCProcessType globalType = kInvalidProcess; | |
482 | ||
483 | ||
484 | if (adebug) { | |
485 | printf("AliPWG0Helper::GetDPMJetProcessType : DPMJet process type found: %d \n",dpmJetType); | |
486 | } | |
487 | ||
488 | ||
489 | if(dpmJetType == 1){ // this is explicitly inelastic | |
490 | globalType = kND; | |
491 | } | |
492 | else if(dpmJetType==5||dpmJetType==6){ | |
493 | globalType = kSD; | |
494 | } | |
495 | else if(dpmJetType==7||dpmJetType==4){// DD and double pomeron | |
496 | globalType = kDD; | |
497 | } | |
498 | return globalType; | |
499 | } | |
500 | ||
501 | ||
502 | AliPWG0Helper::MCProcessType AliPWG0Helper::GetEventProcessType(AliHeader* aHeader, Bool_t adebug) { | |
503 | // | |
504 | // get the process type of the event. | |
505 | // | |
506 | ||
507 | ||
508 | // Check for simple headers first | |
509 | ||
510 | AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader()); | |
511 | if (pythiaGenHeader) { | |
512 | return GetPythiaEventProcessType(pythiaGenHeader,adebug); | |
513 | } | |
514 | ||
515 | AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader->GenEventHeader()); | |
516 | if (dpmJetGenHeader) { | |
517 | return GetDPMjetEventProcessType(dpmJetGenHeader,adebug); | |
518 | } | |
519 | ||
520 | ||
521 | // check for cocktail | |
522 | ||
523 | AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader()); | |
524 | if (!genCocktailHeader) { | |
525 | printf("AliPWG0Helper::GetProcessType : Unknown header type (not Pythia or Cocktail). \n"); | |
526 | return kInvalidProcess; | |
527 | } | |
528 | ||
529 | TList* headerList = genCocktailHeader->GetHeaders(); | |
530 | if (!headerList) { | |
531 | return kInvalidProcess; | |
532 | } | |
533 | ||
534 | for (Int_t i=0; i<headerList->GetEntries(); i++) { | |
535 | ||
536 | pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i)); | |
537 | if (pythiaGenHeader) { | |
538 | return GetPythiaEventProcessType(pythiaGenHeader,adebug); | |
539 | } | |
540 | ||
541 | dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(headerList->At(i)); | |
542 | if (dpmJetGenHeader) { | |
543 | return GetDPMjetEventProcessType(dpmJetGenHeader,adebug); | |
544 | } | |
545 | } | |
546 | return kInvalidProcess; | |
547 | } | |
548 | ||
549 | ||
550 | ||
551 | //____________________________________________________________________ | |
552 | TParticle* AliPWG0Helper::FindPrimaryMother(AliStack* stack, Int_t label) | |
553 | { | |
554 | // | |
555 | // Finds the first mother among the primary particles of the particle identified by <label>, | |
556 | // i.e. the primary that "caused" this particle | |
557 | // | |
558 | ||
559 | Int_t motherLabel = FindPrimaryMotherLabel(stack, label); | |
560 | if (motherLabel < 0) | |
561 | return 0; | |
562 | ||
563 | return stack->Particle(motherLabel); | |
564 | } | |
565 | ||
566 | //____________________________________________________________________ | |
567 | Int_t AliPWG0Helper::FindPrimaryMotherLabel(AliStack* stack, Int_t label) | |
568 | { | |
569 | // | |
570 | // Finds the first mother among the primary particles of the particle identified by <label>, | |
571 | // i.e. the primary that "caused" this particle | |
572 | // | |
573 | // returns its label | |
574 | // | |
575 | ||
576 | Int_t nPrim = stack->GetNprimary(); | |
577 | ||
578 | while (label >= nPrim) | |
579 | { | |
580 | //printf("Particle %d (pdg %d) is not a primary. Let's check its mother %d\n", label, mother->GetPdgCode(), mother->GetMother(0)); | |
581 | ||
582 | TParticle* particle = stack->Particle(label); | |
583 | if (!particle) | |
584 | { | |
585 | AliDebugGeneral("FindPrimaryMother", AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack.", label)); | |
586 | return -1; | |
587 | } | |
588 | ||
589 | // find mother | |
590 | if (particle->GetMother(0) < 0) | |
591 | { | |
592 | AliDebugGeneral("FindPrimaryMother", AliLog::kError, Form("UNEXPECTED: Could not find mother of secondary particle %d.", label)); | |
593 | return -1; | |
594 | } | |
595 | ||
596 | label = particle->GetMother(0); | |
597 | } | |
598 | ||
599 | return label; | |
600 | } | |
601 | ||
602 | //____________________________________________________________________ | |
603 | void AliPWG0Helper::NormalizeToBinWidth(TH1* hist) | |
604 | { | |
605 | // | |
606 | // normalizes a 1-d histogram to its bin width | |
607 | // | |
608 | ||
609 | for (Int_t i=1; i<=hist->GetNbinsX(); ++i) | |
610 | { | |
611 | hist->SetBinContent(i, hist->GetBinContent(i) / hist->GetBinWidth(i)); | |
612 | hist->SetBinError(i, hist->GetBinError(i) / hist->GetBinWidth(i)); | |
613 | } | |
614 | } | |
615 | ||
616 | //____________________________________________________________________ | |
617 | void AliPWG0Helper::NormalizeToBinWidth(TH2* hist) | |
618 | { | |
619 | // | |
620 | // normalizes a 2-d histogram to its bin width (x width * y width) | |
621 | // | |
622 | ||
623 | for (Int_t i=1; i<=hist->GetNbinsX(); ++i) | |
624 | for (Int_t j=1; j<=hist->GetNbinsY(); ++j) | |
625 | { | |
626 | Double_t factor = hist->GetXaxis()->GetBinWidth(i) * hist->GetYaxis()->GetBinWidth(j); | |
627 | hist->SetBinContent(i, j, hist->GetBinContent(i, j) / factor); | |
628 | hist->SetBinError(i, j, hist->GetBinError(i, j) / factor); | |
629 | } | |
630 | } | |
631 | ||
632 | //____________________________________________________________________ | |
633 | void AliPWG0Helper::PrintConf(AnalysisMode analysisMode, Trigger trigger) | |
634 | { | |
635 | // | |
636 | // Prints the given configuration | |
637 | // | |
638 | ||
639 | TString str(">>>> Running with >"); | |
640 | ||
641 | if (analysisMode & kSPD) | |
642 | str += "SPD-only"; | |
643 | ||
644 | if (analysisMode & kTPC) | |
645 | str += "TPC-only"; | |
646 | ||
647 | if (analysisMode & kTPCITS) | |
648 | str += "Global tracking"; | |
649 | ||
650 | if (analysisMode & kFieldOn) | |
651 | { | |
652 | str += " (with field)"; | |
653 | } | |
654 | else | |
655 | str += " (WITHOUT field)"; | |
656 | ||
657 | str += "< and trigger >"; | |
658 | ||
659 | switch (trigger) | |
660 | { | |
661 | case kAcceptAll : str += "ACCEPT ALL (bypass!)"; break; | |
662 | case kMB1 : str += "MB1"; break; | |
663 | case kMB2 : str += "MB2"; break; | |
664 | case kMB3 : str += "MB3"; break; | |
665 | case kSPDFASTOR : str += "SPD FASTOR"; break; | |
666 | case kOfflineMB1 : str += "Offline MB1"; break; | |
667 | case kOfflineMB2 : str += "Offline MB2"; break; | |
668 | case kOfflineMB3 : str += "Offline MB3"; break; | |
669 | case kOfflineFASTOR : str += "Offline SPD FASTOR"; break; | |
670 | } | |
671 | ||
672 | str += "< <<<<"; | |
673 | ||
674 | Printf("%s", str.Data()); | |
675 | } | |
676 |