Small changes to allow usage from out-of-source directories
[u/mrichter/AliRoot.git] / MUON / MUONefficiency.C
CommitLineData
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
e54bf126 18/// \ingroup macros
19/// \file MUONefficiency.C
20/// \brief add brief description
21///
22/// Macro (upgraded version of MUONmassPlot_ESD.C, better handling of Jpsi) to make :
23/// - Ntuple (Ktuple) containing Upsilon kinematics variables (from kinematics.root files)
24/// - Ntuple (ESDtuple) containing Upsilon kinematics variables from reconstruction and
25/// combinations of 2 muons with opposite charges (ESDtupleBck will be used later)
26/// - Some QA histograms
27/// Ntuple are stored in the file MUONefficiency.root and ESD tree and QA histograms in AliESDs.root
28///
29/// \author Christophe Suire, IPN Orsay
d949b15e 30
d949b15e 31
d949b15e 32
33#if !defined(__CINT__) || defined(__MAKECINT__)
5f72cf5b 34
35// MUON includes
36#include "AliMUONTrackParam.h"
37#include "AliMUONTrackExtrap.h"
103e6575 38#include "AliMUONESDInterface.h"
5f72cf5b 39
40// STEER includes
41#include "AliRun.h"
42#include "AliRunLoader.h"
43#include "AliHeader.h"
44#include "AliLoader.h"
45#include "AliStack.h"
f7a1cc68 46#include "AliMagF.h"
5f72cf5b 47#include "AliESDEvent.h"
48#include "AliESDVertex.h"
49#include "AliTracker.h"
50#include "AliCDBManager.h"
103e6575 51#include "AliESDMuonTrack.h"
5f72cf5b 52
d949b15e 53// ROOT includes
54#include "TTree.h"
53399039 55#include "TNtuple.h"
d949b15e 56#include "TBranch.h"
57#include "TClonesArray.h"
58#include "TLorentzVector.h"
59#include "TFile.h"
60#include "TH1.h"
61#include "TH2.h"
62#include "TParticle.h"
63#include "TTree.h"
64#include "TString.h"
65#include <Riostream.h>
8cde4af5 66#include <TGeoManager.h>
da79ec88 67#include <TROOT.h>
9bf6860b 68#include <TF1.h>
d949b15e 69
d949b15e 70#endif
71
6b092dfc 72Bool_t MUONefficiency( char* filename = "galice.root", char* geoFilename = "geometry.root", char* esdFileName = "AliESDs.root",
73 Int_t ExtrapToVertex = -1, Int_t ResType = 553, Int_t FirstEvent = 0, Int_t LastEvent = 1000000 )
e54bf126 74{
75/// \param ExtrapToVertex (default -1)
76/// - <0: no extrapolation;
77/// - =0: extrapolation to (0,0,0);
78/// - >0: extrapolation to ESDVertex if available, else to (0,0,0)
79/// \param ResType 553 for Upsilon, 443 for J/Psi (default 553)
80/// \param FirstEvent (default 0)
81/// \param LastEvent (default 1.e6)
82/// \param Chi2Cut to keep only tracks with chi2 per d.o.f. < Chi2Cut (default 100)
83
84
85 // MUONefficiency starts
d949b15e 86
15381c8b 87 // Set default CDB storage
88 AliCDBManager* man = AliCDBManager::Instance();
162637e4 89 man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
15381c8b 90
53399039 91 Double_t MUON_MASS = 0.105658369;
92 Double_t UPSILON_MASS = 9.4603 ;
93 Double_t JPSI_MASS = 3.097;
94
95 // Upper and lower bound for counting entries in the mass peak
96 // +/- 300 MeV/c^2 in this case.
97 Float_t countingRange = 0.300 ;
98
99 Float_t massResonance = 5.;
100 Float_t invMassMinInPeak = 0. ;
101 Float_t invMassMaxInPeak = 0. ;
102
103 Float_t nBinsPerGev = 40 ;
104 Float_t invMassMin = 0; Float_t invMassMax = 20;
105 Float_t ptMinResonance = 0 ; Float_t ptMaxResonance = 20 ; Int_t ptBinsResonance = 100;
106
107 if (ResType==443) {
108 massResonance = JPSI_MASS ;
109 invMassMinInPeak = JPSI_MASS - countingRange ; invMassMaxInPeak = JPSI_MASS + countingRange ;
110 //limits for histograms
111 invMassMin = 0 ; invMassMax = 6.;
112 ptMinResonance = 0 ; ptMaxResonance = 20 ; ptBinsResonance = 100;
113 }
114 if (ResType==553) {
115 massResonance = UPSILON_MASS;
116 invMassMinInPeak = UPSILON_MASS - countingRange ; invMassMaxInPeak = UPSILON_MASS + countingRange;
117 //limits for histograms
118 invMassMin = 0 ; invMassMax = 12.;
119 ptMinResonance = 0 ; ptMaxResonance = 20 ; ptBinsResonance = 100;
120 }
121
122 // Single Tracks muon cuts
123 Float_t Chi2Cut = 100.;
124 Float_t PtCutMin = 0. ;
125 Float_t PtCutMax = 10000. ;
126
127
128 // Limits for histograms
129 Float_t ptMinMuon = 0. ; Float_t ptMaxMuon = 20.; Int_t ptBinsMuon = 100 ;
130 Float_t pMinMuon = 0. ; Float_t pMaxMuon = 200.; Int_t pBinsMuon = 100 ;
d949b15e 131
53399039 132
d949b15e 133 //Reset ROOT and connect tree file
134 gROOT->Reset();
135
136 // Printing Level
137 Int_t PRINTLEVEL = 0 ;
d949b15e 138
139 //for kinematic, i.e. reference tracks
140 TNtuple *Ktuple = new TNtuple("Ktuple","Kinematics NTuple","ev:npart:id:idmo:idgdmo:p:pt:y:theta:pseudorap:vx:vy:vz");
141
53399039 142 //for reconstruction
143 TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
144 TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
145 TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", ptBinsMuon, ptMinMuon, ptMaxMuon);
146 TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", pBinsMuon, pMinMuon, pMaxMuon);
147
148 TH1F *hInvMassAll;
149 TH1F *hInvMassBg;
150 TH2F *hInvMassAll_vs_Pt;
151 TH2F *hInvMassBgk_vs_Pt;
d949b15e 152 TH1F *hInvMassRes;
d949b15e 153
53399039 154
155 hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", (Int_t) (nBinsPerGev*(invMassMax - invMassMin)), invMassMin, invMassMax);
156 hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", (Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax);
157 hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",(Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax,ptBinsResonance,ptMinResonance,ptMaxResonance);
158 hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",(Int_t) (nBinsPerGev*(invMassMax- invMassMin)), invMassMin, invMassMax,ptBinsResonance,ptMinResonance,ptMaxResonance);
159
160 hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Resonance",(Int_t) (nBinsPerGev*3*countingRange*2),massResonance-3*countingRange,massResonance+3*countingRange);
161
cfc3191e 162 TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",150,-15,15);
53399039 163 TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.);
d949b15e 164 TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5);
165 TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2);
166 TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2);
167 TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.);
168 TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.);
169 TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.);
53399039 170
d949b15e 171 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");
172 TNtuple *ESDtupleBck = new TNtuple("ESDtupleBck","Reconstructed Mu+Mu- pairs for Background","ev:pt:y:theta:minv:pt1:y1:theta1:pt2:y2:theta2");
173
174
53399039 175 // Variables
d949b15e 176 Int_t EventInMass = 0;
53399039 177 Int_t EventInMassMatch = 0;
178 Int_t NbTrigger = 0;
179 Int_t ptTrig = 0;
d949b15e 180
cfc3191e 181 Double_t fXVertex=0;
182 Double_t fYVertex=0;
183 Double_t fZVertex=0;
690d2205 184 Double_t errXVtx=0;
185 Double_t errYVtx=0;
cfc3191e 186
d949b15e 187 Double_t fPxRec1, fPyRec1, fPzRec1, fE1;
188 Double_t fPxRec2, fPyRec2, fPzRec2, fE2;
189 Int_t fCharge1, fCharge2;
190
53399039 191 Int_t ntrackhits, nevents;
192 Int_t nprocessedevents = 0 ;
d949b15e 193 Double_t fitfmin;
194
195 TLorentzVector fV1, fV2, fVtot;
196
8cde4af5 197 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
198 if (!gGeoManager) {
199 TGeoManager::Import(geoFilename);
200 if (!gGeoManager) {
201 Error("MUONmass_ESD", "getting geometry from file %s failed", filename);
202 return kFALSE;
203 }
204 }
205
3f6289e9 206 // set mag field
207 // waiting for mag field in CDB
f7a1cc68 208 if (!TGeoGlobalMagField::Instance()->GetField()) {
209 printf("Loading field map...\n");
210 AliMagF* field = new AliMagF("Maps","Maps",2,1.,1., 10.,AliMagF::k5kG);
211 TGeoGlobalMagField::Instance()->SetField(field);
212 }
213 // set the magnetic field for track extrapolations
214 AliMUONTrackExtrap::SetField();
215
d949b15e 216
217 // open run loader and load gAlice, kinematics and header
218 AliRunLoader* runLoader = AliRunLoader::Open(filename);
219 if (!runLoader) {
220 Error("MUONefficiency", "getting run loader from file %s failed", filename);
221 return kFALSE;
222 }
223
224 runLoader->LoadgAlice();
225 gAlice = runLoader->GetAliRun();
226 if (!gAlice) {
227 Error("MUONefficiency", "no galice object found");
228 return kFALSE;
229 }
230
231 // open the ESD file
232 TFile* esdFile = TFile::Open(esdFileName);
233 if (!esdFile || !esdFile->IsOpen()) {
234 Error("MUONefficiency", "opening ESD file %s failed", esdFileName);
235 return kFALSE;
236 }
237
1c2bdf00 238 AliESDEvent* esd = new AliESDEvent();
d949b15e 239 TTree* tree = (TTree*) esdFile->Get("esdTree");
240 if (!tree) {
241 Error("CheckESD", "no ESD tree found");
242 return kFALSE;
db3b303f 243 }
244 esd->ReadFromTree(tree);
d949b15e 245
246 runLoader->LoadHeader();
5f72cf5b 247 Int_t runNumber = runLoader->GetHeader()->GetRun();
248 AliCDBManager::Instance()->SetRun(runNumber);
249
d949b15e 250 nevents = runLoader->GetNumberOfEvents();
cfc3191e 251 AliMUONTrackParam trackParam;
252
d949b15e 253 // to access the particle Stack
254 runLoader->LoadKinematics("READ");
255
53399039 256 Int_t numberOfGeneratedResonances = 0 ;
257
d949b15e 258 TParticle *particle;
53399039 259
d949b15e 260 Int_t track1Trigger = 0 ;
261 Float_t track1TriggerChi2 = 0 ;
d949b15e 262 Int_t track2Trigger = 0 ;
263 Float_t track2TriggerChi2 = 0 ;
264
265
266 // Loop over events
267 for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) { // Start event loop
268
269 if (iEvent%1000 == 0 )
270 printf("\n Nb of events analysed: %d \n",iEvent);
271
272 // get current event
273 runLoader->GetEvent(iEvent);
53399039 274 nprocessedevents++;
275
d949b15e 276 // get the stack and fill the kine tree
277 AliStack *theStack = runLoader->Stack();
278 if (PRINTLEVEL > 0) theStack->DumpPStack ();
279
280 Int_t nparticles = (Int_t)runLoader->TreeK()->GetEntries();
281 Int_t nprimarypart = theStack->GetNprimary();
282 Int_t ntracks = theStack->GetNtrack();
53399039 283
d949b15e 284 if (PRINTLEVEL || (iEvent%100==0)) printf("\n >>> Event %d \n",iEvent);
cfc3191e 285 if (PRINTLEVEL) cout << nprimarypart << " Particles generated (total is " << ntracks << ")"<< endl ;
d949b15e 286
287 for(Int_t iparticle=0; iparticle<nparticles; iparticle++) { // Start loop over particles
288 particle = theStack->Particle(iparticle);
289
290 Int_t muId = particle->GetPdgCode();
291 Int_t muM = particle->GetFirstMother();
292 Int_t muGM = 0;
293 Float_t muP = particle->P();
294 Float_t muPt = TMath::Sqrt(particle->Px()*particle->Px()+particle->Py()*particle->Py());
295 Float_t muY = 0.5*TMath::Log((particle->Energy()+particle->Pz()+1.e-13)/(particle->Energy()-particle->Pz()+1.e-13));
296 if (muM >= 0) {
d949b15e 297 TParticle *theMum = theStack->Particle(muM);
298 muM = theMum->GetPdgCode();
d949b15e 299 muGM = theMum->GetFirstMother() ;
300 if (muGM >= 0){
301 TParticle *grandMa = theStack->Particle(muGM);
302 muGM = grandMa->GetPdgCode();
303 }
304 else muGM=0;
305 }
306 else muM=0;
53399039 307
308 if (muId==ResType) numberOfGeneratedResonances++;
309
310
d949b15e 311 Float_t muT = particle->Theta()*180/TMath::Pi();
312 Float_t muE = particle->Eta();
313
314 Float_t muVx = particle->Vx();
315 Float_t muVy = particle->Vy();
316 Float_t muVz = particle->Vz();
317
318 // If a write error occurs, the number of bytes returned is -1.
319 // If no data are written, because e.g. the branch is disabled,
320 // the number of bytes returned is 0.
321 Int_t errCode = Ktuple->Fill(iEvent,nparticles,muId,muM,muGM,muP,muPt,muY,muT,muE,muVx,muVy,muVz);
322 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);
323
324 } // End loop over particles
325
326
327
328 // get the event summary data
329 tree->GetEvent(iEvent);
330 if (!esd) {
331 Error("CheckESD", "no ESD object found for event %d", iEvent);
332 return kFALSE;
333 }
cfc3191e 334
335 // get the SPD reconstructed vertex (vertexer) and fill the histogram
43939bd8 336 AliESDVertex* Vertex = (AliESDVertex*) esd->GetVertex();
337 if (Vertex->GetNContributors()) {
cfc3191e 338 fZVertex = Vertex->GetZv();
339 fYVertex = Vertex->GetYv();
340 fXVertex = Vertex->GetXv();
690d2205 341 errXVtx = Vertex->GetXRes();
342 errYVtx = Vertex->GetYRes();
cfc3191e 343 }
344 hPrimaryVertex->Fill(fZVertex);
345
f57d136a 346 Int_t triggerWord = esd->GetTriggerMask();
d949b15e 347 Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
348
349 if (PRINTLEVEL > 0){
350 printf("\n Nb of events analysed: %d \n",iEvent);
351 cout << " number of tracks: " << nTracks <<endl;
352 }
353
37827b29 354 // set the magnetic field for track extrapolations
f7a1cc68 355 AliMUONTrackExtrap::SetField();
d949b15e 356 // loop over all reconstructed tracks (also first track of combination)
357 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
358
b1fea02e 359 // skip ghosts
360 if (!esd->GetMuonTrack(iTrack)->ContainTrackerData()) continue;
361
8cde4af5 362 AliESDMuonTrack* muonTrack = new AliESDMuonTrack(*(esd->GetMuonTrack(iTrack)));
d949b15e 363
8cde4af5 364 // extrapolate to vertex if required and available
365 if (ExtrapToVertex > 0 && Vertex->GetNContributors()) {
103e6575 366 AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack, trackParam);
690d2205 367 AliMUONTrackExtrap::ExtrapToVertex(&trackParam, fXVertex, fYVertex, fZVertex, errXVtx, errYVtx);
103e6575 368 AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack); // put the new parameters in this copy of AliESDMuonTrack
8cde4af5 369 } else if ((ExtrapToVertex > 0 && !Vertex->GetNContributors()) || ExtrapToVertex == 0){
103e6575 370 AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack, trackParam);
690d2205 371 AliMUONTrackExtrap::ExtrapToVertex(&trackParam, 0., 0., 0., 0., 0.);
103e6575 372 AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack); // put the new parameters in this copy of AliESDMuonTrack
d949b15e 373 }
374
375 // Trigger
376 if (PRINTLEVEL > 5) cout << "MatchTrigger " << muonTrack->GetMatchTrigger() << " and Chi2 of matching tracks " << track1TriggerChi2 << endl ;
377 track1Trigger = muonTrack->GetMatchTrigger();
378 if (track1Trigger)
379 track1TriggerChi2 = muonTrack->GetChi2MatchTrigger();
380 else
381 track1TriggerChi2 = 0. ;
382
d949b15e 383 fCharge1 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
384
22ccc301 385 muonTrack->LorentzP(fV1);
d949b15e 386
387 ntrackhits = muonTrack->GetNHit();
388 fitfmin = muonTrack->GetChi2();
389
390 // transverse momentum
391 Float_t pt1 = fV1.Pt();
392
393 // total momentum
394 Float_t p1 = fV1.P();
395
396 // Rapidity
397 Float_t rapMuon1 = fV1.Rapidity();
398
399 // chi2 per d.o.f.
400
401 Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5);
22ccc301 402 if (PRINTLEVEL > 5 ) printf(" px %f py %f pz %f pt %f NHits %d Norm.chi2 %f charge %d\n",fV1.Px(), fV1.Py(), fV1.Pz(), pt1, ntrackhits, ch1, fCharge1);
d949b15e 403
404
405 if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) { // condition for good track (Chi2Cut and PtCut)
406 if (PRINTLEVEL > 8) cout << "inside pt and chi2 cuts " << endl ;
407
408 // fill histos hPtMuon and hChi2PerDof
409 hPtMuon->Fill(pt1);
410 hPMuon->Fill(p1);
411 hChi2PerDof->Fill(ch1);
412 hRapMuon->Fill(rapMuon1);
413
414 if (fCharge1 > 0) {
415 hPtMuonPlus->Fill(pt1);
22ccc301 416 hThetaPhiPlus->Fill(fV1.Phi()*180./TMath::Pi(),fV1.Theta()*180./TMath::Pi());
d949b15e 417 } else {
418 hPtMuonMinus->Fill(pt1);
22ccc301 419 hThetaPhiMinus->Fill(fV1.Phi()*180./TMath::Pi(),fV1.Theta()*180./TMath::Pi());
d949b15e 420 }
421
422 // loop over second track of combination
423 for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
424
b1fea02e 425 // skip ghosts
426 if (!esd->GetMuonTrack(iTrack2)->ContainTrackerData()) continue;
427
8cde4af5 428 AliESDMuonTrack* muonTrack2 = new AliESDMuonTrack(*(esd->GetMuonTrack(iTrack2)));
cfc3191e 429
8cde4af5 430 // extrapolate to vertex if required and available
431 if (ExtrapToVertex > 0 && Vertex->GetNContributors()) {
103e6575 432 AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack2, trackParam);
690d2205 433 AliMUONTrackExtrap::ExtrapToVertex(&trackParam, fXVertex, fYVertex, fZVertex, errXVtx, errYVtx);
103e6575 434 AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack2); // put the new parameters in this copy of AliESDMuonTrack
8cde4af5 435 } else if ((ExtrapToVertex > 0 && !Vertex->GetNContributors()) || ExtrapToVertex == 0){
103e6575 436 AliMUONESDInterface::GetParamAtFirstCluster(*muonTrack2, trackParam);
690d2205 437 AliMUONTrackExtrap::ExtrapToVertex(&trackParam, 0., 0., 0., 0., 0.);
103e6575 438 AliMUONESDInterface::SetParamAtVertex(trackParam, *muonTrack2); // put the new parameters in this copy of AliESDMuonTrack
d949b15e 439 }
440
8cde4af5 441 track2Trigger = muonTrack2->GetMatchTrigger();
d949b15e 442 if (track2Trigger)
8cde4af5 443 track2TriggerChi2 = muonTrack2->GetChi2MatchTrigger();
d949b15e 444 else
445 track2TriggerChi2 = 0. ;
446
8cde4af5 447 fCharge2 = Int_t(TMath::Sign(1.,muonTrack2->GetInverseBendingMomentum()));
d949b15e 448
22ccc301 449 muonTrack2->LorentzP(fV2);
d949b15e 450
8cde4af5 451 ntrackhits = muonTrack2->GetNHit();
452 fitfmin = muonTrack2->GetChi2();
d949b15e 453
454 // transverse momentum
455 Float_t pt2 = fV2.Pt();
456
457 // chi2 per d.o.f.
458 Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5);
459
d949b15e 460
cfc3191e 461 // condition for good track (Chi2Cut and PtCut)
462 if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) {
d949b15e 463
cfc3191e 464 // condition for opposite charges
465 if ((fCharge1 * fCharge2) == -1) {
466
467 if (PRINTLEVEL > 8) cout << "---------> Now filling the Ntuple " << endl ;
468
469 // invariant mass
470 fVtot = fV1 + fV2;
471 Float_t invMass = fVtot.M();
472
473 if (fCharge1 < 0){ //mu_minus is index 1 in the ntuple
474 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};
475 ESDtuple->Fill(ESDFill);
476 }
477 else{
478 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};
479 ESDtuple->Fill(ESDFill);
480 }
481
482 // fill histos hInvMassAll and hInvMassRes
483 hInvMassAll->Fill(invMass);
484 hInvMassRes->Fill(invMass);
485 hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt());
486
487 //trigger info
488 if (ResType == 553)
5c83829b 489 ptTrig = 0x08;// mask for Hpt unlike sign pair
cfc3191e 490 else if (ResType == 443)
5c83829b 491 ptTrig = 0x04;// mask for Lpt unlike sign pair
cfc3191e 492
493
494 if (esd->GetTriggerMask() & ptTrig) NbTrigger++;
495
496 if (invMass > invMassMinInPeak && invMass < invMassMaxInPeak) {
497 EventInMass++;
498 hRapResonance->Fill(fVtot.Rapidity());
499 hPtResonance->Fill(fVtot.Pt());
53399039 500
cfc3191e 501 // match with trigger
8b4a9b89 502 if (muonTrack2->GetMatchTrigger()>=0 && (esd->GetTriggerMask() & ptTrig)) EventInMassMatch++;
53399039 503
cfc3191e 504 }
505
506 } // if (fCharge1 * fCharge2) == -1)
507 } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax))
8cde4af5 508 delete muonTrack2;
d949b15e 509 } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++)
510 } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) )
8cde4af5 511 delete muonTrack;
d949b15e 512 } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)
513
514 hNumberOfTrack->Fill(nTracks);
515 // esdFile->Delete();
516
517 } // End of event loop
518
519
520 // Loop over events for bg event
521
522 Double_t thetaPlus, phiPlus;
523 Double_t thetaMinus, phiMinus;
524 Float_t PtMinus, PtPlus;
525
526 for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) { // Loop over events for bg event
53399039 527 // according to Christian a 3d phi-theta-pt random pick would take better care
d949b15e 528 // of all correlations
529
530 hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus);
531 hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus);
532 PtPlus = hPtMuonPlus->GetRandom();
533 PtMinus = hPtMuonMinus->GetRandom();
534
535 fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus);
536 fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus);
537 fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus);
538
53399039 539 fE1 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
d949b15e 540 fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
541
542 fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus);
543 fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus);
544 fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus);
545
53399039 546 fE2 = TMath::Sqrt(MUON_MASS * MUON_MASS + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
d949b15e 547 fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
548
549 // invariant mass
550 fVtot = fV1 + fV2;
551
552 // fill histos hInvMassAll and hInvMassRes
553 hInvMassBg->Fill(fVtot.M());
554 hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() );
555
556 // Ntuple for background... more convenient
557 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);
558
559 } // End loop over events for background
560
561
562 // File for histograms and histogram booking
563 TString outfilename = "MUONefficiency.root";
53399039 564 TFile *ntupleFile = new TFile(outfilename.Data(), "RECREATE");
d949b15e 565
566 Ktuple->Write();
567 ESDtuple->Write();
53399039 568 ESDtupleBck->Write();
569
570 ntupleFile->Close();
d949b15e 571
53399039 572 TFile *histoFile = new TFile("MUONhistos.root", "RECREATE");
cfc3191e 573 hPrimaryVertex->Write();
53399039 574 hPtMuon->Write();
575 hPtMuonPlus->Write();
576 hPtMuonMinus->Write();
577 hPMuon->Write();
578 hChi2PerDof->Write();
579 hInvMassAll->Write();
580 hInvMassBg->Write();
581 hInvMassAll_vs_Pt ->Write();
582 hInvMassBgk_vs_Pt->Write();
583 hInvMassRes->Write();
584 hNumberOfTrack->Write();
585 hRapMuon ->Write();
586 hRapResonance ->Write();
587 hPtResonance ->Write();
588 hThetaPhiPlus ->Write();
589 hThetaPhiMinus ->Write();
d949b15e 590 histoFile->Close();
53399039 591
592 cout << "" << endl ;
593 cout << "*************************************************" << endl;
594
595 cout << "MUONefficiency : " << nprocessedevents << " events processed" << endl;
596 if (ResType==443)
597 cout << "Number of generated J/Psi (443) : " << numberOfGeneratedResonances << endl ;
598 if (ResType==553)
599 cout << "Number of generated Upsilon (553) :" << numberOfGeneratedResonances << endl ;
600 cout << "Chi2Cut for muon tracks = " << Chi2Cut << endl;
601 cout << "PtCutMin for muon tracks = " << PtCutMin << endl;
602 cout << "PtCutMax for muon tracks = " << PtCutMax << endl;
9bf6860b 603
604 hInvMassAll->Fit("gaus","q0");
605
606 TF1* f1 = hInvMassAll->GetFunction("gaus");
607
608 cout << "Entries (unlike sign dimuons) : " << hInvMassAll->GetEntries()
609 << Form(". Rough sigma = %7.2f MeV/c2",f1->GetParameter(2)*1000.0) << endl;
610
53399039 611 cout << "Entries (unlike sign dimuons) in the mass range ["<<invMassMinInPeak<<";"<<invMassMaxInPeak<<"] : " << EventInMass <<endl;
9bf6860b 612
53399039 613 if (ptTrig==0x800) cout << "Unlike Pair - All Pt" ;
614 if (ptTrig==0x400) cout << "Unlike Pair - High Pt" ;
615 if (ptTrig==0x200) cout << "Unlike Pair - Low Pt" ;
616 cout << " triggers : " << NbTrigger << endl;
d949b15e 617
53399039 618 cout << "Entries in the mass range with matching between reconstructed tracks and trigger tracks " << EventInMassMatch << endl;
619
d949b15e 620
621 return kTRUE;
622}