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Corrections for digit amplitude and time filling
[u/mrichter/AliRoot.git] / MUON / MUONefficiency.C
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d949b15e 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
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 purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/* $Id$ */
17
53399039 18// Macro (upgraded version of MUONmassPlot_ESD.C, better handling of Jpsi) to make :
d949b15e 19// 1) Ntuple (Ktuple) containing Upsilon kinematics variables (from kinematics.root files)
20// 2) Ntuple (ESDtuple) containing Upsilon kinematics variables from reconstruction and
53399039 21// combinations of 2 muons with opposite charges (ESDtupleBck will be used later)
d949b15e 22// 3) Some QA histograms
23// Ntuple are stored in the file MUONefficiency.root and ESD tree and QA histograms in AliESDs.root
24
53399039 25// Christophe Suire, IPN Orsay
26
27
28
d949b15e 29// Arguments:
30// FirstEvent (default 0)
53399039 31// LastEvent (default 1.e6)
d949b15e 32// ResType (default 553)
53399039 33// 553 for Upsilon, 443 for J/Psi
d949b15e 34// Chi2Cut (default 100)
35// to keep only tracks with chi2 per d.o.f. < Chi2Cut
d949b15e 36
d949b15e 37
d949b15e 38
39#if !defined(__CINT__) || defined(__MAKECINT__)
40// ROOT includes
41#include "TTree.h"
53399039 42#include "TNtuple.h"
d949b15e 43#include "TBranch.h"
44#include "TClonesArray.h"
45#include "TLorentzVector.h"
46#include "TFile.h"
47#include "TH1.h"
48#include "TH2.h"
49#include "TParticle.h"
50#include "TTree.h"
51#include "TString.h"
52#include <Riostream.h>
53
54// STEER includes
55#include "AliRun.h"
56#include "AliRunLoader.h"
57#include "AliHeader.h"
58#include "AliLoader.h"
59#include "AliStack.h"
3f6289e9 60#include "AliMagFMaps.h"
d949b15e 61#include "AliESD.h"
3f6289e9 62#include "AliTracker.h"
d949b15e 63
64// MUON includes
cfc3191e 65#include "AliMUONTrackParam.h"
d949b15e 66#include "AliESDMuonTrack.h"
67#endif
68
69
53399039 70Bool_t MUONefficiency( Int_t ResType = 553, Int_t FirstEvent = 0, Int_t LastEvent = 1000000,
71 char* esdFileName = "AliESDs.root", char* filename = "galice.root")
d949b15e 72{ // MUONefficiency starts
d949b15e 73
53399039 74 Double_t MUON_MASS = 0.105658369;
75 Double_t UPSILON_MASS = 9.4603 ;
76 Double_t JPSI_MASS = 3.097;
77
78 // Upper and lower bound for counting entries in the mass peak
79 // +/- 300 MeV/c^2 in this case.
80 Float_t countingRange = 0.300 ;
81
82 Float_t massResonance = 5.;
83 Float_t invMassMinInPeak = 0. ;
84 Float_t invMassMaxInPeak = 0. ;
85
86 Float_t nBinsPerGev = 40 ;
87 Float_t invMassMin = 0; Float_t invMassMax = 20;
88 Float_t ptMinResonance = 0 ; Float_t ptMaxResonance = 20 ; Int_t ptBinsResonance = 100;
89
90 if (ResType==443) {
91 massResonance = JPSI_MASS ;
92 invMassMinInPeak = JPSI_MASS - countingRange ; invMassMaxInPeak = JPSI_MASS + countingRange ;
93 //limits for histograms
94 invMassMin = 0 ; invMassMax = 6.;
95 ptMinResonance = 0 ; ptMaxResonance = 20 ; ptBinsResonance = 100;
96 }
97 if (ResType==553) {
98 massResonance = UPSILON_MASS;
99 invMassMinInPeak = UPSILON_MASS - countingRange ; invMassMaxInPeak = UPSILON_MASS + countingRange;
100 //limits for histograms
101 invMassMin = 0 ; invMassMax = 12.;
102 ptMinResonance = 0 ; ptMaxResonance = 20 ; ptBinsResonance = 100;
103 }
104
105 // Single Tracks muon cuts
106 Float_t Chi2Cut = 100.;
107 Float_t PtCutMin = 0. ;
108 Float_t PtCutMax = 10000. ;
109
110
111 // Limits for histograms
112 Float_t ptMinMuon = 0. ; Float_t ptMaxMuon = 20.; Int_t ptBinsMuon = 100 ;
113 Float_t pMinMuon = 0. ; Float_t pMaxMuon = 200.; Int_t pBinsMuon = 100 ;
d949b15e 114
53399039 115
d949b15e 116 //Reset ROOT and connect tree file
117 gROOT->Reset();
118
119 // Printing Level
120 Int_t PRINTLEVEL = 0 ;
d949b15e 121
122 //for kinematic, i.e. reference tracks
123 TNtuple *Ktuple = new TNtuple("Ktuple","Kinematics NTuple","ev:npart:id:idmo:idgdmo:p:pt:y:theta:pseudorap:vx:vy:vz");
124
53399039 125 //for reconstruction
126 TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
127 TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
128 TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
129 TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", pBinsMuon, pMinMuon, pMaxMuon);
130
131 TH1F *hInvMassAll;
132 TH1F *hInvMassBg;
133 TH2F *hInvMassAll_vs_Pt;
134 TH2F *hInvMassBgk_vs_Pt;
d949b15e 135 TH1F *hInvMassRes;
d949b15e 136
53399039 137
138 hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", (Int_t) (nBinsPerGev*(invMassMax - invMassMin)), invMassMin, invMassMax);
139 hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", (Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax);
140 hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",(Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax,ptBinsResonance,ptMinResonance,ptMaxResonance);
141 hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",(Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax,ptBinsResonance,ptMinResonance,ptMaxResonance);
142
143 hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Resonance",(Int_t) (nBinsPerGev*3*countingRange*2),massResonance-3*countingRange,massResonance+3*countingRange);
144
cfc3191e 145 TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",150,-15,15);
53399039 146 TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.);
d949b15e 147 TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5);
148 TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2);
149 TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2);
150 TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.);
151 TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.);
152 TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.);
53399039 153
d949b15e 154 TNtuple *ESDtuple = new TNtuple("ESDtuple","Reconstructed Mu+Mu- pairs and Upsilon","ev:tw:pt:y:theta:minv:pt1:y1:theta1:q1:trig1:pt2:y2:theta2:q2:trig2");
155 TNtuple *ESDtupleBck = new TNtuple("ESDtupleBck","Reconstructed Mu+Mu- pairs for Background","ev:pt:y:theta:minv:pt1:y1:theta1:pt2:y2:theta2");
156
157
53399039 158 // Variables
d949b15e 159 Int_t EventInMass = 0;
53399039 160 Int_t EventInMassMatch = 0;
161 Int_t NbTrigger = 0;
162 Int_t ptTrig = 0;
d949b15e 163
cfc3191e 164 Double_t fXVertex=0;
165 Double_t fYVertex=0;
166 Double_t fZVertex=0;
167
d949b15e 168 Double_t thetaX, thetaY, pYZ;
169 Double_t fPxRec1, fPyRec1, fPzRec1, fE1;
170 Double_t fPxRec2, fPyRec2, fPzRec2, fE2;
171 Int_t fCharge1, fCharge2;
172
53399039 173 Int_t ntrackhits, nevents;
174 Int_t nprocessedevents = 0 ;
d949b15e 175 Double_t fitfmin;
176
177 TLorentzVector fV1, fV2, fVtot;
178
3f6289e9 179 // set mag field
180 // waiting for mag field in CDB
181 printf("Loading field map...\n");
b97b210c 182 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG);
3f6289e9 183 AliTracker::SetFieldMap(field, kFALSE);
d949b15e 184
185 // open run loader and load gAlice, kinematics and header
186 AliRunLoader* runLoader = AliRunLoader::Open(filename);
187 if (!runLoader) {
188 Error("MUONefficiency", "getting run loader from file %s failed", filename);
189 return kFALSE;
190 }
191
192 runLoader->LoadgAlice();
193 gAlice = runLoader->GetAliRun();
194 if (!gAlice) {
195 Error("MUONefficiency", "no galice object found");
196 return kFALSE;
197 }
198
199 // open the ESD file
200 TFile* esdFile = TFile::Open(esdFileName);
201 if (!esdFile || !esdFile->IsOpen()) {
202 Error("MUONefficiency", "opening ESD file %s failed", esdFileName);
203 return kFALSE;
204 }
205
206 AliESD* esd = new AliESD();
207 TTree* tree = (TTree*) esdFile->Get("esdTree");
208 if (!tree) {
209 Error("CheckESD", "no ESD tree found");
210 return kFALSE;
211 }
212 tree->SetBranchAddress("ESD", &esd);
213
214 runLoader->LoadHeader();
215 nevents = runLoader->GetNumberOfEvents();
cfc3191e 216 AliMUONTrackParam trackParam;
217
d949b15e 218 // to access the particle Stack
219 runLoader->LoadKinematics("READ");
220
53399039 221 Int_t numberOfGeneratedResonances = 0 ;
222
d949b15e 223 TParticle *particle;
53399039 224
d949b15e 225 Int_t track1Trigger = 0 ;
226 Float_t track1TriggerChi2 = 0 ;
d949b15e 227 Int_t track2Trigger = 0 ;
228 Float_t track2TriggerChi2 = 0 ;
229
230
231 // Loop over events
232 for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) { // Start event loop
233
234 if (iEvent%1000 == 0 )
235 printf("\n Nb of events analysed: %d \n",iEvent);
236
237 // get current event
238 runLoader->GetEvent(iEvent);
53399039 239 nprocessedevents++;
240
d949b15e 241 // get the stack and fill the kine tree
242 AliStack *theStack = runLoader->Stack();
243 if (PRINTLEVEL > 0) theStack->DumpPStack ();
244
245 Int_t nparticles = (Int_t)runLoader->TreeK()->GetEntries();
246 Int_t nprimarypart = theStack->GetNprimary();
247 Int_t ntracks = theStack->GetNtrack();
53399039 248
d949b15e 249 if (PRINTLEVEL || (iEvent%100==0)) printf("\n >>> Event %d \n",iEvent);
cfc3191e 250 if (PRINTLEVEL) cout << nprimarypart << " Particles generated (total is " << ntracks << ")"<< endl ;
d949b15e 251
252 for(Int_t iparticle=0; iparticle<nparticles; iparticle++) { // Start loop over particles
253 particle = theStack->Particle(iparticle);
254
255 Int_t muId = particle->GetPdgCode();
256 Int_t muM = particle->GetFirstMother();
257 Int_t muGM = 0;
258 Float_t muP = particle->P();
259 Float_t muPt = TMath::Sqrt(particle->Px()*particle->Px()+particle->Py()*particle->Py());
260 Float_t muY = 0.5*TMath::Log((particle->Energy()+particle->Pz()+1.e-13)/(particle->Energy()-particle->Pz()+1.e-13));
261 if (muM >= 0) {
d949b15e 262 TParticle *theMum = theStack->Particle(muM);
263 muM = theMum->GetPdgCode();
d949b15e 264 muGM = theMum->GetFirstMother() ;
265 if (muGM >= 0){
266 TParticle *grandMa = theStack->Particle(muGM);
267 muGM = grandMa->GetPdgCode();
268 }
269 else muGM=0;
270 }
271 else muM=0;
53399039 272
273 if (muId==ResType) numberOfGeneratedResonances++;
274
275
d949b15e 276 Float_t muT = particle->Theta()*180/TMath::Pi();
277 Float_t muE = particle->Eta();
278
279 Float_t muVx = particle->Vx();
280 Float_t muVy = particle->Vy();
281 Float_t muVz = particle->Vz();
282
283 // If a write error occurs, the number of bytes returned is -1.
284 // If no data are written, because e.g. the branch is disabled,
285 // the number of bytes returned is 0.
286 Int_t errCode = Ktuple->Fill(iEvent,nparticles,muId,muM,muGM,muP,muPt,muY,muT,muE,muVx,muVy,muVz);
287 if (PRINTLEVEL || errCode < 1) printf("iEvent %d,nparticles %d,muId %d,muM %d,muGM %d,muP %.2f,muPt %.2f,muY %.2f,muT %.2f,muE %.2f,muVx %.2f,muVy %.2f,muVz %.2f \n", iEvent,nparticles,muId,muM,muGM,muP,muPt,muY,muT,muE,muVx,muVy,muVz);
288
289 } // End loop over particles
290
291
292
293 // get the event summary data
294 tree->GetEvent(iEvent);
295 if (!esd) {
296 Error("CheckESD", "no ESD object found for event %d", iEvent);
297 return kFALSE;
298 }
cfc3191e 299
300 // get the SPD reconstructed vertex (vertexer) and fill the histogram
43939bd8 301 AliESDVertex* Vertex = (AliESDVertex*) esd->GetVertex();
302 if (Vertex->GetNContributors()) {
cfc3191e 303 fZVertex = Vertex->GetZv();
304 fYVertex = Vertex->GetYv();
305 fXVertex = Vertex->GetXv();
306 }
307 hPrimaryVertex->Fill(fZVertex);
308
f57d136a 309 Int_t triggerWord = esd->GetTriggerMask();
d949b15e 310 Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
311
312 if (PRINTLEVEL > 0){
313 printf("\n Nb of events analysed: %d \n",iEvent);
314 cout << " number of tracks: " << nTracks <<endl;
315 }
316
317 // loop over all reconstructed tracks (also first track of combination)
318 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
319
320 AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack);
321
43939bd8 322 if (!Vertex->GetNContributors()) {
cfc3191e 323 //re-extrapolate to vertex, if not kown before.
324 trackParam.GetParamFrom(*muonTrack);
325 trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex);
326 trackParam.SetParamFor(*muonTrack);
d949b15e 327 }
328
329 // Trigger
330 if (PRINTLEVEL > 5) cout << "MatchTrigger " << muonTrack->GetMatchTrigger() << " and Chi2 of matching tracks " << track1TriggerChi2 << endl ;
331 track1Trigger = muonTrack->GetMatchTrigger();
332 if (track1Trigger)
333 track1TriggerChi2 = muonTrack->GetChi2MatchTrigger();
334 else
335 track1TriggerChi2 = 0. ;
336
337 thetaX = muonTrack->GetThetaX();
338 thetaY = muonTrack->GetThetaY();
339
340 pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
341 fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
342 fPxRec1 = fPzRec1 * TMath::Tan(thetaX);
343 fPyRec1 = fPzRec1 * TMath::Tan(thetaY);
344 fCharge1 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
345
53399039 346 fE1 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
d949b15e 347 fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
348
349 ntrackhits = muonTrack->GetNHit();
350 fitfmin = muonTrack->GetChi2();
351
352 // transverse momentum
353 Float_t pt1 = fV1.Pt();
354
355 // total momentum
356 Float_t p1 = fV1.P();
357
358 // Rapidity
359 Float_t rapMuon1 = fV1.Rapidity();
360
361 // chi2 per d.o.f.
362
363 Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5);
364 if (PRINTLEVEL > 5 ) printf(" px %f py %f pz %f pt %f NHits %d Norm.chi2 %f charge %d\n",fPxRec1, fPyRec1, fPzRec1, pt1, ntrackhits, ch1, fCharge1);
365
366
367 if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { // condition for good track (Chi2Cut and PtCut)
368 if (PRINTLEVEL > 8) cout << "inside pt and chi2 cuts " << endl ;
369
370 // fill histos hPtMuon and hChi2PerDof
371 hPtMuon->Fill(pt1);
372 hPMuon->Fill(p1);
373 hChi2PerDof->Fill(ch1);
374 hRapMuon->Fill(rapMuon1);
375
376 if (fCharge1 > 0) {
377 hPtMuonPlus->Fill(pt1);
378 hThetaPhiPlus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
379 } else {
380 hPtMuonMinus->Fill(pt1);
381 hThetaPhiMinus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
382 }
383
384 // loop over second track of combination
385 for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
386
387 AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2);
cfc3191e 388
43939bd8 389 if (!Vertex->GetNContributors()) {
cfc3191e 390 trackParam.GetParamFrom(*muonTrack);
391 trackParam.ExtrapToVertex(fXVertex, fYVertex, fZVertex);
392 trackParam.SetParamFor(*muonTrack);
d949b15e 393 }
394
395 track2Trigger = muonTrack->GetMatchTrigger();
396 if (track2Trigger)
397 track2TriggerChi2 = muonTrack->GetChi2MatchTrigger();
398 else
399 track2TriggerChi2 = 0. ;
400
401 thetaX = muonTrack->GetThetaX();
402 thetaY = muonTrack->GetThetaY();
403
404 pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
405 fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
406 fPxRec2 = fPzRec2 * TMath::Tan(thetaX);
407 fPyRec2 = fPzRec2 * TMath::Tan(thetaY);
408 fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
409
53399039 410 fE2 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
d949b15e 411 fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
412
413 ntrackhits = muonTrack->GetNHit();
414 fitfmin = muonTrack->GetChi2();
415
416 // transverse momentum
417 Float_t pt2 = fV2.Pt();
418
419 // chi2 per d.o.f.
420 Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5);
421
d949b15e 422
cfc3191e 423 // condition for good track (Chi2Cut and PtCut)
424 if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) {
d949b15e 425
cfc3191e 426 // condition for opposite charges
427 if ((fCharge1 * fCharge2) == -1) {
428
429 if (PRINTLEVEL > 8) cout << "---------> Now filling the Ntuple " << endl ;
430
431 // invariant mass
432 fVtot = fV1 + fV2;
433 Float_t invMass = fVtot.M();
434
435 if (fCharge1 < 0){ //mu_minus is index 1 in the ntuple
436 Float_t ESDFill[16] = {iEvent,triggerWord,fVtot.Pt(),fVtot.Rapidity(),fVtot.Theta()/TMath::Pi()*180,invMass,fV1.Pt(),fV1.Rapidity(),fV1.Theta()/TMath::Pi()*180,fCharge1,track1TriggerChi2,fV2.Pt(),fV2.Rapidity(),fV2.Theta()/TMath::Pi()*180,fCharge2,track2TriggerChi2};
437 ESDtuple->Fill(ESDFill);
438 }
439 else{
440 Float_t ESDFill[16] = {iEvent,triggerWord,fVtot.Pt(),fVtot.Rapidity(),fVtot.Theta()/TMath::Pi()*180,invMass,fV2.Pt(),fV2.Rapidity(),fV2.Theta()/TMath::Pi()*180,fCharge2,track2TriggerChi2,fV1.Pt(),fV1.Rapidity(),fV1.Theta()/TMath::Pi()*180,fCharge1,track1TriggerChi2};
441 ESDtuple->Fill(ESDFill);
442 }
443
444 // fill histos hInvMassAll and hInvMassRes
445 hInvMassAll->Fill(invMass);
446 hInvMassRes->Fill(invMass);
447 hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt());
448
449 //trigger info
450 if (ResType == 553)
451 ptTrig = 0x400;// mask for Hpt unlike sign pair
452 else if (ResType == 443)
453 ptTrig = 0x800;// mask for Apt unlike sign pair
454 else
455 ptTrig = 0x200;// mask for Lpt unlike sign pair
456
457
458 if (esd->GetTriggerMask() & ptTrig) NbTrigger++;
459
460 if (invMass > invMassMinInPeak && invMass < invMassMaxInPeak) {
461 EventInMass++;
462 hRapResonance->Fill(fVtot.Rapidity());
463 hPtResonance->Fill(fVtot.Pt());
53399039 464
cfc3191e 465 // match with trigger
466 if (muonTrack->GetMatchTrigger() && (esd->GetTriggerMask() & ptTrig)) EventInMassMatch++;
53399039 467
cfc3191e 468 }
469
470 } // if (fCharge1 * fCharge2) == -1)
471 } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax))
d949b15e 472 } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++)
473 } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) )
474 } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)
475
476 hNumberOfTrack->Fill(nTracks);
477 // esdFile->Delete();
478
479 } // End of event loop
480
481
482 // Loop over events for bg event
483
484 Double_t thetaPlus, phiPlus;
485 Double_t thetaMinus, phiMinus;
486 Float_t PtMinus, PtPlus;
487
488 for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) { // Loop over events for bg event
53399039 489 // according to Christian a 3d phi-theta-pt random pick would take better care
d949b15e 490 // of all correlations
491
492 hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus);
493 hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus);
494 PtPlus = hPtMuonPlus->GetRandom();
495 PtMinus = hPtMuonMinus->GetRandom();
496
497 fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus);
498 fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus);
499 fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus);
500
53399039 501 fE1 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
d949b15e 502 fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
503
504 fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus);
505 fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus);
506 fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus);
507
53399039 508 fE2 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
d949b15e 509 fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
510
511 // invariant mass
512 fVtot = fV1 + fV2;
513
514 // fill histos hInvMassAll and hInvMassRes
515 hInvMassBg->Fill(fVtot.M());
516 hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() );
517
518 // Ntuple for background... more convenient
519 ESDtupleBck->Fill(iEvent,fVtot.Pt(),fVtot.Rapidity(),fVtot.Theta()/TMath::Pi()*180,fVtot.M(),fV2.Pt(),fV2.Rapidity(),fV2.Theta()/TMath::Pi()*180,fV1.Pt(),fV1.Rapidity(),fV1.Theta()/TMath::Pi()*180);
520
521 } // End loop over events for background
522
523
524 // File for histograms and histogram booking
525 TString outfilename = "MUONefficiency.root";
53399039 526 TFile *ntupleFile = new TFile(outfilename.Data(), "RECREATE");
d949b15e 527
528 Ktuple->Write();
529 ESDtuple->Write();
53399039 530 ESDtupleBck->Write();
531
532 ntupleFile->Close();
d949b15e 533
53399039 534 TFile *histoFile = new TFile("MUONhistos.root", "RECREATE");
cfc3191e 535 hPrimaryVertex->Write();
53399039 536 hPtMuon->Write();
537 hPtMuonPlus->Write();
538 hPtMuonMinus->Write();
539 hPMuon->Write();
540 hChi2PerDof->Write();
541 hInvMassAll->Write();
542 hInvMassBg->Write();
543 hInvMassAll_vs_Pt ->Write();
544 hInvMassBgk_vs_Pt->Write();
545 hInvMassRes->Write();
546 hNumberOfTrack->Write();
547 hRapMuon ->Write();
548 hRapResonance ->Write();
549 hPtResonance ->Write();
550 hThetaPhiPlus ->Write();
551 hThetaPhiMinus ->Write();
d949b15e 552 histoFile->Close();
53399039 553
554 cout << "" << endl ;
555 cout << "*************************************************" << endl;
556
557 cout << "MUONefficiency : " << nprocessedevents << " events processed" << endl;
558 if (ResType==443)
559 cout << "Number of generated J/Psi (443) : " << numberOfGeneratedResonances << endl ;
560 if (ResType==553)
561 cout << "Number of generated Upsilon (553) :" << numberOfGeneratedResonances << endl ;
562 cout << "Chi2Cut for muon tracks = " << Chi2Cut << endl;
563 cout << "PtCutMin for muon tracks = " << PtCutMin << endl;
564 cout << "PtCutMax for muon tracks = " << PtCutMax << endl;
565 cout << "Entries (unlike sign dimuons) in the mass range ["<<invMassMinInPeak<<";"<<invMassMaxInPeak<<"] : " << EventInMass <<endl;
566 if (ptTrig==0x800) cout << "Unlike Pair - All Pt" ;
567 if (ptTrig==0x400) cout << "Unlike Pair - High Pt" ;
568 if (ptTrig==0x200) cout << "Unlike Pair - Low Pt" ;
569 cout << " triggers : " << NbTrigger << endl;
d949b15e 570
53399039 571 cout << "Entries in the mass range with matching between reconstructed tracks and trigger tracks " << EventInMassMatch << endl;
572
d949b15e 573
574 return kTRUE;
575}