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55fd51b0 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
b88403f3 | 3 | * SigmaEffect_thetadegrees * |
55fd51b0 | 4 | * Author: The ALICE Off-line Project. * |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpeateose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
55fd51b0 | 19 | // Compact information for the muon generated tracks in the MUON arm |
20 | // useful at the last stage of the analysis chain | |
21 | // provides a link between the reconstructed track and the generated particle | |
22 | // stores kinematical information at gen. and rec. level and | |
23 | // the decay history of the muon, allowing the identification of the | |
24 | // mother process | |
25 | // | |
26 | // To be used together with AliMUONPairLight | |
3d1463c8 | 27 | // |
28 | // This class was prepared by INFN Cagliari, July 2006 | |
29 | // (authors: H.Woehri, A.de Falco) | |
30 | //----------------------------------------------------------------------------- | |
55fd51b0 | 31 | |
9bdda5f6 | 32 | // 13 Nov 2007: |
33 | // Added a temporary fix to FindRefTrack to be able to handle reconstructed tracks | |
34 | // generated from ESD muon track information. The problem is that the ESD data at | |
35 | // the moment only contains the first hit on chamber 1. Hopefully in the near future | |
36 | // this will be fixed and all hit information will be available. | |
37 | // - Artur Szostak <artursz@iafrica.com> | |
38 | ||
55fd51b0 | 39 | #include "AliMUONTrackLight.h" |
40 | #include "AliMUONTrack.h" | |
41 | #include "AliMUONConstants.h" | |
bd5eb041 | 42 | #include "AliMUONVTrackStore.h" |
9bdda5f6 | 43 | #include "AliMUONTrackExtrap.h" |
933daf4c | 44 | #include "AliMUONTrackParam.h" |
55fd51b0 | 45 | |
46 | #include "AliESDMuonTrack.h" | |
47 | #include "AliRunLoader.h" | |
48 | #include "AliStack.h" | |
49 | #include "AliHeader.h" | |
50 | ||
51 | #include "TDatabasePDG.h" | |
55fd51b0 | 52 | #include "TParticle.h" |
53 | #include "TString.h" | |
54 | ||
55 | ClassImp(AliMUONTrackLight) | |
56 | ||
57 | //=================================================================== | |
58 | ||
59 | AliMUONTrackLight::AliMUONTrackLight() | |
60 | : TObject(), | |
61 | fPrec(), | |
62 | fIsTriggered(kFALSE), | |
63 | fCharge(-999), | |
b88403f3 | 64 | fChi2(-1), |
55fd51b0 | 65 | fCentr(-1), |
66 | fPgen(), | |
67 | fTrackPythiaLine(-999), | |
68 | fTrackPDGCode(-999), | |
69 | fOscillation(kFALSE), | |
b88403f3 | 70 | fNParents(0), |
71 | fWeight(1) | |
55fd51b0 | 72 | { |
73 | /// default constructor | |
74 | fPgen.SetPxPyPzE(0.,0.,0.,0.); | |
75 | fPrec.SetPxPyPzE(0.,0.,0.,0.); | |
76 | for (Int_t i=0; i<3; i++) fXYZ[i]=-999; | |
77 | for (Int_t npar = 0; npar < fgkNParentsMax; npar++){ | |
78 | fParentPDGCode[npar] = -1; | |
79 | fParentPythiaLine[npar] = -1; | |
80 | } | |
81 | for (Int_t i = 0; i < 4; i++){ | |
82 | fQuarkPDGCode[i] = -1; | |
83 | fQuarkPythiaLine[i] = -1; | |
84 | } | |
85 | } | |
86 | ||
87 | //============================================ | |
88 | AliMUONTrackLight::AliMUONTrackLight(const AliMUONTrackLight &muonCopy) | |
89 | : TObject(muonCopy), | |
90 | fPrec(muonCopy.fPrec), | |
91 | fIsTriggered(muonCopy.fIsTriggered), | |
92 | fCharge(muonCopy.fCharge), | |
b88403f3 | 93 | fChi2(muonCopy.fChi2), |
55fd51b0 | 94 | fCentr(muonCopy.fCentr), |
95 | fPgen(muonCopy.fPgen), | |
96 | fTrackPythiaLine(muonCopy.fTrackPythiaLine), | |
97 | fTrackPDGCode(muonCopy.fTrackPDGCode), | |
98 | fOscillation(muonCopy.fOscillation), | |
b88403f3 | 99 | fNParents(muonCopy.fNParents), |
100 | fWeight(muonCopy.fWeight) | |
55fd51b0 | 101 | { |
102 | /// copy constructor | |
103 | for (Int_t i=0; i<3; i++) fXYZ[i]=muonCopy.fXYZ[i]; | |
104 | for (Int_t npar = 0; npar < fgkNParentsMax; npar++){ | |
105 | fParentPDGCode[npar] = muonCopy.fParentPDGCode[npar]; | |
106 | fParentPythiaLine[npar] = muonCopy.fParentPythiaLine[npar]; | |
107 | } | |
108 | for (Int_t i = 0; i < 4; i++){ | |
109 | fQuarkPDGCode[i] = muonCopy.fQuarkPDGCode[i]; | |
110 | fQuarkPythiaLine[i] = muonCopy.fQuarkPythiaLine[i]; | |
111 | } | |
112 | } | |
113 | ||
114 | //============================================ | |
115 | AliMUONTrackLight::AliMUONTrackLight(AliESDMuonTrack* muonTrack) | |
116 | : TObject(), | |
117 | fPrec(), | |
118 | fIsTriggered(kFALSE), | |
119 | fCharge(-999), | |
b88403f3 | 120 | fChi2(-1), |
55fd51b0 | 121 | fCentr(-1), |
122 | fPgen(), | |
123 | fTrackPythiaLine(-999), | |
124 | fTrackPDGCode(-999), | |
125 | fOscillation(kFALSE), | |
b88403f3 | 126 | fNParents(0), |
127 | fWeight(1) | |
55fd51b0 | 128 | { |
129 | /// constructor | |
130 | //AliMUONTrackLight(); | |
b88403f3 | 131 | FillFromESD(muonTrack); |
55fd51b0 | 132 | } |
133 | ||
134 | //============================================ | |
b88403f3 | 135 | AliMUONTrackLight::~AliMUONTrackLight() |
136 | { | |
137 | /// Destructor | |
138 | } | |
139 | ||
140 | //============================================ | |
141 | ||
142 | void AliMUONTrackLight::FillFromAliMUONTrack(AliMUONTrack *trackReco,Double_t zvert){ | |
143 | /// this method sets the muon reconstructed momentum according to the value given by AliMUONTrack | |
61fed964 | 144 | AliMUONTrackParam trPar; |
145 | if (trackReco->GetTrackParamAtVertex()) trPar = *(trackReco->GetTrackParamAtVertex()); | |
146 | else { | |
147 | trPar = *((AliMUONTrackParam*) trackReco->GetTrackParamAtCluster()->First()); | |
148 | AliMUONTrackExtrap::ExtrapToVertex(&trPar,0.,0.,0.,0.,0.); | |
149 | } | |
b88403f3 | 150 | this->SetCharge(Int_t(TMath::Sign(1.,trPar.GetInverseBendingMomentum()))); |
151 | this->SetPxPyPz(trPar.Px(),trPar.Py(), trPar.Pz()); | |
152 | this->SetTriggered(trackReco->GetMatchTrigger()); | |
153 | ||
154 | Double_t xyz[3] = { trPar.GetNonBendingCoor(), | |
155 | trPar.GetBendingCoor(), | |
61fed964 | 156 | trPar.GetZ()}; |
157 | if (zvert!=-9999) xyz[2] = zvert; | |
b88403f3 | 158 | this->SetVertex(xyz); |
159 | } | |
160 | ||
161 | //============================================ | |
162 | void AliMUONTrackLight::FillFromESD(AliESDMuonTrack* muonTrack,Double_t zvert){ | |
55fd51b0 | 163 | /// computes prec and charge from ESD track |
164 | Double_t mumass = TDatabasePDG::Instance()->GetParticle(13)->Mass(); | |
165 | Double_t thetaX = muonTrack->GetThetaX(); | |
166 | Double_t thetaY = muonTrack->GetThetaY(); | |
167 | Double_t tanthx = TMath::Tan(thetaX); | |
168 | Double_t tanthy = TMath::Tan(thetaY); | |
169 | Double_t pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum()); | |
170 | Double_t pz = - pYZ / TMath::Sqrt(1.0 + tanthy * tanthy); | |
171 | Double_t px = pz * tanthx; | |
172 | Double_t py = pz * tanthy; | |
173 | fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum())); | |
174 | Double_t energy = TMath::Sqrt(mumass * mumass + px*px + py*py + pz*pz); | |
175 | fPrec.SetPxPyPzE(px,py,pz,energy); | |
b88403f3 | 176 | // get the position |
177 | fXYZ[0] = muonTrack->GetNonBendingCoor(); | |
178 | fXYZ[1] = muonTrack->GetBendingCoor(); | |
179 | if (zvert==-9999) fXYZ[2] = muonTrack->GetZ(); | |
180 | else fXYZ[2] = zvert; | |
181 | // get the chi2 per d.o.f. | |
182 | fChi2 = muonTrack->GetChi2()/ (2.0 * muonTrack->GetNHit() - 5); | |
183 | fIsTriggered = muonTrack->GetMatchTrigger(); | |
55fd51b0 | 184 | } |
185 | ||
186 | //============================================ | |
187 | void AliMUONTrackLight::SetPxPyPz(Double_t px, Double_t py, Double_t pz){ | |
188 | /// set the reconstructed 4-momentum, assuming the particle is a muon | |
189 | Double_t mumass = TDatabasePDG::Instance()->GetParticle(13)->Mass(); | |
190 | Double_t energy = TMath::Sqrt(mumass * mumass + px*px + py*py + pz*pz); | |
191 | fPrec.SetPxPyPzE(px,py,pz,energy); | |
192 | } | |
193 | ||
194 | //============================================ | |
bd5eb041 | 195 | TParticle* AliMUONTrackLight::FindRefTrack( |
196 | AliMUONTrack* trackReco, AliMUONVTrackStore* trackRefArray, | |
61fed964 | 197 | AliStack* stack) |
bd5eb041 | 198 | { |
9bdda5f6 | 199 | /// Find the Monte Carlo (MC) particle that corresponds to a given reconstructed track. |
200 | /// @param trackReco This is the reconstructed track for which we want to find a | |
201 | /// corresponding MC particle. | |
202 | /// @param trackRefArray The list of MC reference tracks as generated by | |
203 | /// AliMUONRecoCheck::ReconstructedTracks for example. | |
204 | /// @param stack The MC stack of simulated particles. | |
9bdda5f6 | 205 | |
55fd51b0 | 206 | TParticle *part = 0; |
61fed964 | 207 | const Double_t kSigmaCut = 4; // 4 sigmas cut |
bd5eb041 | 208 | Int_t compPart = 0; |
61fed964 | 209 | Bool_t compTrack; |
210 | ||
bd5eb041 | 211 | TIter next(trackRefArray->CreateIterator()); |
212 | AliMUONTrack* trackRef; | |
213 | while ( (trackRef = static_cast<AliMUONTrack*>(next())) ) { | |
55fd51b0 | 214 | // check if trackRef is compatible with trackReco: |
61fed964 | 215 | compTrack = kFALSE; |
9bdda5f6 | 216 | |
61fed964 | 217 | if (trackReco->GetNClusters() > 1) { |
218 | ||
219 | // check cluster by cluster if trackReco contain info at each cluster | |
c59f70b9 | 220 | Bool_t compTrackArray[10]; |
221 | trackRef->CompatibleTrack(trackReco,kSigmaCut,compTrackArray); | |
61fed964 | 222 | if (TrackCheck(compTrackArray) == 4) compTrack = kTRUE; |
223 | ||
224 | } else { | |
225 | ||
226 | // otherwise check only parameters at the z position of the first trackRef | |
227 | AliMUONTrackParam *refParam = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->First(); | |
228 | AliMUONTrackParam recoParam(*((AliMUONTrackParam*) trackReco->GetTrackParamAtCluster()->First())); | |
61fed964 | 229 | Double_t chi2; |
4ea3f013 | 230 | if (AliMUONTrackExtrap::ExtrapToZCov(&recoParam, refParam->GetZ()) && |
231 | refParam->CompatibleTrackParam(recoParam, kSigmaCut, chi2)) compTrack = kTRUE; | |
61fed964 | 232 | |
233 | } | |
234 | ||
235 | if (compTrack) { | |
bd5eb041 | 236 | compPart++; |
326a874b | 237 | Int_t trackID = trackRef->GetUniqueID(); |
55fd51b0 | 238 | this->SetTrackPythiaLine(trackID); |
bd5eb041 | 239 | part = stack->Particle(trackID); |
55fd51b0 | 240 | fTrackPDGCode = part->GetPdgCode(); |
241 | } | |
242 | } | |
bd5eb041 | 243 | if (compPart>1) { |
9bdda5f6 | 244 | AliFatal("More than one particle compatible with the reconstructed track."); |
55fd51b0 | 245 | } |
bd5eb041 | 246 | return part; |
55fd51b0 | 247 | } |
248 | ||
249 | //============================================ | |
250 | Int_t AliMUONTrackLight::TrackCheck(Bool_t *compTrack){ | |
251 | /// Apply reconstruction requirements | |
252 | /// Return number of validated conditions | |
253 | /// If all the tests are verified then TrackCheck = 4 (good track) | |
9bdda5f6 | 254 | |
55fd51b0 | 255 | Int_t iTrack = 0; |
256 | Int_t hitsInLastStations = 0; | |
257 | ||
258 | // apply reconstruction requirements | |
259 | if (compTrack[0] || compTrack[1]) iTrack++; // at least one hit in st. 0 | |
260 | if (compTrack[2] || compTrack[3]) iTrack++; // at least one hit in st. 1 | |
261 | if (compTrack[4] || compTrack[5]) iTrack++; // at least one hit in st. 2 | |
262 | for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) { | |
263 | if (compTrack[ch]) hitsInLastStations++; | |
264 | } | |
265 | if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4 | |
266 | return iTrack; | |
267 | } | |
268 | ||
b88403f3 | 269 | //============================================ |
270 | void AliMUONTrackLight::FillMuonHistory(AliStack *stack, TParticle *part){ | |
55fd51b0 | 271 | /// scans the muon history to determine parents pdg code and pythia line |
272 | Int_t countP = -1; | |
273 | Int_t parents[10], parLine[10]; | |
274 | Int_t lineM = part->GetFirstMother();//line in the Pythia output of the particle's mother | |
275 | ||
55fd51b0 | 276 | TParticle *mother; |
277 | Int_t status=-1, pdg=-1; | |
278 | while(lineM >= 0){ | |
b88403f3 | 279 | |
55fd51b0 | 280 | mother = stack->Particle(lineM); //direct mother of rec. track |
281 | pdg = mother->GetPdgCode();//store PDG code of first mother | |
b88403f3 | 282 | // break if a string, gluon, quark or diquark is found |
283 | if(pdg == 92 || pdg == 21 || TMath::Abs(pdg) < 10 || IsDiquark(pdg)) break; | |
55fd51b0 | 284 | parents[++countP] = pdg; |
285 | parLine[countP] = lineM; | |
286 | status = mother->GetStatusCode();//get its status code to check if oscillation occured | |
287 | if(IsB0(parents[countP]) && status == 12) this->SetOscillation(kTRUE); | |
288 | lineM = mother->GetFirstMother(); | |
289 | } | |
290 | //store all the fragmented parents in an array: | |
291 | for(int i = 0; i <= countP; i++){ | |
292 | this->SetParentPDGCode(i,parents[countP-i]); | |
293 | this->SetParentPythiaLine(i,parLine[countP-i]); | |
294 | } | |
55fd51b0 | 295 | fNParents = countP+1; |
296 | countP = -1; | |
b88403f3 | 297 | |
55fd51b0 | 298 | //and store the lines of the string and further quarks in another array: |
299 | while(lineM >= 0){ | |
300 | mother = stack->Particle(lineM); | |
301 | pdg = mother->GetPdgCode(); | |
302 | //now, get information before the fragmentation | |
303 | this->SetQuarkPythiaLine(++countP, lineM);//store the line of the string in index 0 | |
304 | this->SetQuarkPDGCode(countP, pdg);//store the pdg of the quarks in index 1,2 | |
305 | lineM = mother->GetFirstMother(); | |
306 | } | |
b88403f3 | 307 | |
55fd51b0 | 308 | //check if in case of HF production, the string points to the correct end |
309 | //and correct it in case of need: | |
310 | countP = 1; | |
b88403f3 | 311 | for(int par = 0; par < 4; par++){ |
312 | if(TMath::Abs(this->GetQuarkPDGCode(par)) < 6){ | |
313 | countP = par; //get the quark just before hadronisation | |
314 | break; | |
315 | } | |
316 | } | |
55fd51b0 | 317 | if(this->GetQuarkPythiaLine(countP) > -1 && (this->GetParentFlavour(0)==4 || this->GetParentFlavour(0)==5)){ |
318 | if(this->GetParentFlavour(0) != TMath::Abs(this->GetQuarkPDGCode(countP))){ | |
319 | ||
9bdda5f6 | 320 | AliWarning(Form("quark flavour of parent and that of quark do not correspond: %d %d --> correcting\n", |
321 | this->GetParentFlavour(0), TMath::Abs(this->GetQuarkPDGCode(countP))) | |
322 | ); | |
323 | ||
7cdc832b | 324 | pdg = this->GetQuarkPDGCode(countP); |
325 | Int_t line = this->GetQuarkPythiaLine(countP); | |
55fd51b0 | 326 | this->ResetQuarkInfo(); |
327 | while(TMath::Abs(pdg) != this->GetParentFlavour(0)){//pdg of q,g in Pythia listing following the wrong string end | |
328 | //must coincide with the flavour of the last fragmented mother | |
329 | ||
330 | pdg = stack->Particle(++line)->GetPdgCode(); | |
331 | } | |
332 | //now, we have the correct string end and the correct line | |
333 | //continue to fill again all parents and corresponding lines | |
334 | while(line >= 0){ | |
335 | mother = stack->Particle(line);//get again the mother | |
336 | pdg = mother->GetPdgCode(); | |
337 | this->SetQuarkPythiaLine(countP, line); | |
338 | this->SetQuarkPDGCode(countP++, pdg); | |
339 | line = mother->GetFirstMother(); | |
340 | } | |
b88403f3 | 341 | this->PrintInfo("h"); |
342 | }//mismatch | |
55fd51b0 | 343 | } |
344 | } | |
b88403f3 | 345 | |
55fd51b0 | 346 | //==================================== |
347 | void AliMUONTrackLight::ResetQuarkInfo(){ | |
348 | /// resets parton information | |
349 | for(int pos = 1; pos < 4; pos++){//[0] is the string | |
350 | this->SetQuarkPDGCode(pos,-1); | |
351 | this->SetQuarkPythiaLine(pos,-1); | |
352 | } | |
353 | } | |
354 | ||
355 | //==================================== | |
356 | Bool_t AliMUONTrackLight::IsB0(Int_t intTest) const { | |
357 | /// checks if the particle is a B0 | |
358 | Int_t bMes0[2] = {511,531};//flavour code of B0d and B0s | |
359 | Bool_t answer = kFALSE; | |
360 | for(int i = 0; i < 2; i++){ | |
361 | if(TMath::Abs(intTest) == bMes0[i]){ | |
362 | answer = kTRUE; | |
363 | break; | |
364 | } | |
365 | } | |
366 | return answer; | |
367 | } | |
368 | //==================================== | |
369 | Bool_t AliMUONTrackLight::IsMotherAResonance(Int_t index) const { | |
370 | /// checks if mother is a resonance | |
371 | Int_t intTest = GetParentPDGCode(index); | |
372 | // the resonance pdg code is built this way | |
373 | // x00ffn where x=0,1,.. (1S,2S... states), f=quark flavour | |
374 | Int_t id=intTest%100000; | |
375 | return (!((id-id%10)%110)); | |
376 | } | |
377 | //==================================== | |
378 | Int_t AliMUONTrackLight::GetParentFlavour(Int_t idParent) const { | |
379 | /// returns the flavour of parent idParent (idParent=0 is the oldest | |
380 | /// hadronized parent) | |
381 | Int_t pdg = GetParentPDGCode(idParent); | |
382 | Int_t quark = TMath::Abs(pdg/100); | |
383 | if(quark > 9) quark = quark/10; | |
384 | return quark; | |
385 | } | |
386 | ||
387 | //==================================== | |
388 | void AliMUONTrackLight::PrintInfo(Option_t* opt){ | |
389 | /// prints information about the track: | |
390 | /// - "H" muon's decay history | |
391 | /// - "K" muon kinematics | |
392 | /// - "A" all variables | |
393 | TString options(opt); | |
394 | options.ToUpper(); | |
395 | ||
396 | if(options.Contains("H") || options.Contains("A")){ //muon decay history | |
397 | char *name= new char[100]; | |
398 | TString pdg = "", line = ""; | |
399 | for(int i = 3; i >= 0; i--){ | |
400 | if(this->GetQuarkPythiaLine(i)>= 0){ | |
401 | sprintf(name, "%4d --> ", this->GetQuarkPythiaLine(i)); | |
402 | line += name; | |
403 | sprintf(name, "%4d --> ", this->GetQuarkPDGCode(i)); | |
404 | pdg += name; | |
405 | } | |
406 | } | |
407 | for(int i = 0; i < fNParents; i++){ | |
408 | if(this->GetParentPythiaLine(i)>= 0){ | |
409 | sprintf(name, "%7d --> ", this->GetParentPythiaLine(i)); | |
410 | line += name; | |
411 | sprintf(name, "%7d --> ", this->GetParentPDGCode(i)); | |
412 | pdg += name; | |
413 | } | |
414 | } | |
415 | sprintf(name, "%4d", this->GetTrackPythiaLine()); line += name; | |
416 | sprintf(name, "%4d", this->GetTrackPDGCode()); pdg += name; | |
417 | ||
418 | printf("\nmuon's decay history:\n"); | |
419 | printf(" PDG: %s\n", pdg.Data()); | |
420 | printf("line: %s\n", line.Data()); | |
421 | } | |
422 | if(options.Contains("K") || options.Contains("A")){ //muon kinematic | |
423 | ||
424 | Int_t charge = this->GetCharge(); | |
425 | Double_t *vtx = this->GetVertex(); | |
426 | TLorentzVector momRec = this->GetPRec(); | |
427 | TLorentzVector momGen = this->GetPGen(); | |
428 | printf("the track's charge is %d\n", charge); | |
429 | printf("Primary vertex: Vx = %1.3f, Vy = %1.3f, Vz = %1.3f\n", vtx[0], vtx[1], vtx[2]); | |
430 | printf("Generated: Px = %1.3f, Py = %1.3f, Pz = %1.3f\n", momGen.Px(), momGen.Py(), momGen.Pz()); | |
431 | printf("Reconstructed: Px = %1.3f, Py = %1.3f, Pz = %1.3f\n", momRec.Px(), momRec.Py(), momRec.Pz()); | |
432 | printf("Rec. variables: pT %1.3f, pseudo-rapidity %1.3f, theta %1.3f (%1.3f degree), phi %1.3f (%1.3f degree)\n", | |
433 | momRec.Pt(), momRec.Eta(), momRec.Theta(), 180./TMath::Pi() * momRec.Theta(), | |
434 | momRec.Phi(), 180./TMath::Pi() * momRec.Phi()); | |
435 | } | |
436 | } | |
b88403f3 | 437 | //==================================== |
438 | Bool_t AliMUONTrackLight::IsParentPionOrKaon(Int_t idparent){ | |
439 | /// checks if a muon comes from a pion or kaon or a particle that decays into one of these two | |
440 | Int_t pdg = this->GetParentPDGCode(idparent); | |
441 | if (TMath::Abs(pdg)==211 || //pi+ | |
442 | TMath::Abs(pdg)==321 || //K+ | |
443 | TMath::Abs(pdg)==213 || //rho+ | |
444 | TMath::Abs(pdg)==311 || //K0 | |
445 | TMath::Abs(pdg)==313 || //K*0 | |
446 | TMath::Abs(pdg)==323 //K*+ | |
447 | ) { | |
448 | return kTRUE; | |
449 | } | |
450 | else return kFALSE; | |
451 | } | |
452 | //==================================== | |
453 | Bool_t AliMUONTrackLight::IsDiquark(Int_t pdg){ | |
454 | /// check if the provided pdg code corresponds to a diquark | |
455 | pdg = TMath::Abs(pdg); | |
456 | if((pdg > 1000) && (pdg%100 < 10)) return kTRUE; | |
457 | else return kFALSE; | |
458 | } |