Updated to use the new CTP framework (Christian)
[u/mrichter/AliRoot.git] / MUON / MUONmassPlot_ESD.C
CommitLineData
5473f16a 1#if !defined(__CINT__) || defined(__MAKECINT__)
2// ROOT includes
48d6b312 3#include "TTree.h"
5473f16a 4#include "TBranch.h"
5#include "TClonesArray.h"
6#include "TLorentzVector.h"
7#include "TFile.h"
8#include "TH1.h"
ac3c5325 9#include "TH2.h"
5473f16a 10#include "TParticle.h"
11#include "TTree.h"
12#include <Riostream.h>
13
14// STEER includes
15#include "AliRun.h"
16#include "AliRunLoader.h"
17#include "AliHeader.h"
18#include "AliLoader.h"
19#include "AliStack.h"
cb75342e 20#include "AliMagF.h"
5473f16a 21#include "AliESD.h"
22
23// MUON includes
24#include "AliESDMuonTrack.h"
25#endif
26//
27// Macro MUONmassPlot.C for ESD
28// Ch. Finck, Subatech, April. 2004
29//
30
31// macro to make invariant mass plots
32// for combinations of 2 muons with opposite charges,
33// from root file "MUON.tracks.root" containing the result of track reconstruction.
34// Histograms are stored on the "MUONmassPlot.root" file.
35// introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...)
36// using Invariant Mass for rapidity.
37
38// Arguments:
39// FirstEvent (default 0)
40// LastEvent (default 0)
41// ResType (default 553)
42// 553 for Upsilon, anything else for J/Psi
43// Chi2Cut (default 100)
44// to keep only tracks with chi2 per d.o.f. < Chi2Cut
45// PtCutMin (default 1)
46// to keep only tracks with transverse momentum > PtCutMin
47// PtCutMax (default 10000)
48// to keep only tracks with transverse momentum < PtCutMax
49// massMin (default 9.17 for Upsilon)
50// & massMax (default 9.77 for Upsilon)
51// to calculate the reconstruction efficiency for resonances with invariant mass
52// massMin < mass < massMax.
53
54// Add parameters and histograms for analysis
55
56Bool_t MUONmassPlot(char* filename = "galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 10000,
57 char* esdFileName = "AliESDs.root", Int_t ResType = 553,
58 Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000.,
59 Float_t massMin = 9.17,Float_t massMax = 9.77)
60{
61 cout << "MUONmassPlot " << endl;
62 cout << "FirstEvent " << FirstEvent << endl;
63 cout << "LastEvent " << LastEvent << endl;
64 cout << "ResType " << ResType << endl;
65 cout << "Chi2Cut " << Chi2Cut << endl;
66 cout << "PtCutMin " << PtCutMin << endl;
67 cout << "PtCutMax " << PtCutMax << endl;
68 cout << "massMin " << massMin << endl;
69 cout << "massMax " << massMax << endl;
70
71
72 //Reset ROOT and connect tree file
73 gROOT->Reset();
74
5473f16a 75 // File for histograms and histogram booking
76 TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE");
77 TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.);
ac3c5325 78 TH1F *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", 100, 0., 20.);
79 TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "Muon- Pt (GeV/c)", 100, 0., 20.);
5473f16a 80 TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.);
81 TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.);
82 TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.);
ac3c5325 83 TH1F *hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", 480, 0., 12.);
f57d136a 84 TH2F *hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",480,0.,12.,80,0.,20.);
85 TH2F *hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",480,0.,12.,80,0.,20.);
86 TH1F *hInvMassRes;
f9ebb3bd 87 TH1F *hPrimaryVertex = new TH1F("hPrimaryVertex","SPD reconstructed Z vertex",120,-12,12);
5473f16a 88
89 if (ResType == 553) {
90 hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.);
91 } else {
92 hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.);
93 }
94
95 TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5);
96 TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2);
97 TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2);
98 TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.);
ac3c5325 99 TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.);
100 TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.);
5473f16a 101
102
103 // settings
104 Int_t EventInMass = 0;
6678cd54 105 Int_t EventInMassMatch = 0;
106 Int_t NbTrigger = 0;
107
5473f16a 108 Float_t muonMass = 0.105658389;
109// Float_t UpsilonMass = 9.46037;
110// Float_t JPsiMass = 3.097;
111
112 Double_t thetaX, thetaY, pYZ;
113 Double_t fPxRec1, fPyRec1, fPzRec1, fE1;
114 Double_t fPxRec2, fPyRec2, fPzRec2, fE2;
115 Int_t fCharge, fCharge2;
116
117 Int_t ntrackhits, nevents;
118 Double_t fitfmin;
f9ebb3bd 119 Double_t fZVertex;
5473f16a 120
121
122 TLorentzVector fV1, fV2, fVtot;
cb75342e 123
124 // set off mag field
125 AliMagF::SetReadField(kFALSE);
126
5473f16a 127 // open run loader and load gAlice, kinematics and header
128 AliRunLoader* runLoader = AliRunLoader::Open(filename);
129 if (!runLoader) {
130 Error("MUONmass_ESD", "getting run loader from file %s failed",
131 filename);
132 return kFALSE;
133 }
134
5473f16a 135 if (!gAlice) {
136 Error("MUONmass_ESD", "no galice object found");
137 return kFALSE;
138 }
139
140
141 // open the ESD file
142 TFile* esdFile = TFile::Open(esdFileName);
143 if (!esdFile || !esdFile->IsOpen()) {
144 Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName);
145 return kFALSE;
146 }
147
48d6b312 148 AliESD* esd = new AliESD();
149 TTree* tree = (TTree*) esdFile->Get("esdTree");
150 if (!tree) {
151 Error("CheckESD", "no ESD tree found");
152 return kFALSE;
153 }
154 tree->SetBranchAddress("ESD", &esd);
f9ebb3bd 155
156
157 AliESDVertex* Vertex = (AliESDVertex*) esd->AliESD::GetVertex();
48d6b312 158
5473f16a 159 runLoader->LoadHeader();
160 nevents = runLoader->GetNumberOfEvents();
161
162 // Loop over events
163 for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) {
164
165 // get current event
166 runLoader->GetEvent(iEvent);
48d6b312 167
5473f16a 168 // get the event summary data
48d6b312 169 tree->GetEvent(iEvent);
5473f16a 170 if (!esd) {
48d6b312 171 Error("CheckESD", "no ESD object found for event %d", iEvent);
5473f16a 172 return kFALSE;
173 }
174
f9ebb3bd 175 // get the SPD reconstructed vertex (vertexer) and fill the histogram
176 fZVertex = Vertex->GetZv();
177 hPrimaryVertex->Fill(fZVertex);
178
48d6b312 179 Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
5473f16a 180
181 // printf("\n Nb of events analysed: %d\r",iEvent);
48d6b312 182 // cout << " number of tracks: " << nTracks <<endl;
5473f16a 183
184 // loop over all reconstructed tracks (also first track of combination)
185 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
186
187 AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack);
188
189 thetaX = muonTrack->GetThetaX();
190 thetaY = muonTrack->GetThetaY();
191
192 pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
d3c448a1 193 fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
5473f16a 194 fPxRec1 = fPzRec1 * TMath::Tan(thetaX);
195 fPyRec1 = fPzRec1 * TMath::Tan(thetaY);
196 fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
197
198 fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
199 fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
200
201 ntrackhits = muonTrack->GetNHit();
202 fitfmin = muonTrack->GetChi2();
203
204 // transverse momentum
205 Float_t pt1 = fV1.Pt();
206
207 // total momentum
208 Float_t p1 = fV1.P();
209
210 // Rapidity
211 Float_t rapMuon1 = fV1.Rapidity();
212
213 // chi2 per d.o.f.
214 Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5);
215// printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n",
216// fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge);
217
218 // condition for good track (Chi2Cut and PtCut)
219
220 if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) {
221
222 // fill histos hPtMuon and hChi2PerDof
223 hPtMuon->Fill(pt1);
224 hPMuon->Fill(p1);
225 hChi2PerDof->Fill(ch1);
226 hRapMuon->Fill(rapMuon1);
ac3c5325 227 if (fCharge > 0) {
228 hPtMuonPlus->Fill(pt1);
229 hThetaPhiPlus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
230 } else {
231 hPtMuonMinus->Fill(pt1);
232 hThetaPhiMinus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
233 }
5473f16a 234 // loop over second track of combination
235 for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
236
237 AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2);
238
239 thetaX = muonTrack->GetThetaX();
240 thetaY = muonTrack->GetThetaY();
241
242 pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
d3c448a1 243 fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
5473f16a 244 fPxRec2 = fPzRec2 * TMath::Tan(thetaX);
245 fPyRec2 = fPzRec2 * TMath::Tan(thetaY);
246 fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
247
248 fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
249 fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
250
251 ntrackhits = muonTrack->GetNHit();
252 fitfmin = muonTrack->GetChi2();
253
254 // transverse momentum
255 Float_t pt2 = fV2.Pt();
256
257 // chi2 per d.o.f.
258 Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5);
259
260 // condition for good track (Chi2Cut and PtCut)
261 if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) {
262
263 // condition for opposite charges
264 if ((fCharge * fCharge2) == -1) {
265
266 // invariant mass
267 fVtot = fV1 + fV2;
268 Float_t invMass = fVtot.M();
269
270 // fill histos hInvMassAll and hInvMassRes
271 hInvMassAll->Fill(invMass);
272 hInvMassRes->Fill(invMass);
ac3c5325 273 hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt());
6678cd54 274 Int_t ptTrig;
275 if (ResType == 553)
276 ptTrig = 0x400;// mask for Hpt unlike sign pair
277 else
278 ptTrig = 0x200;// mask for Lpt unlike sign pair
279
f57d136a 280 if (esd->GetTriggerMask() & ptTrig) NbTrigger++;
5473f16a 281 if (invMass > massMin && invMass < massMax) {
282 EventInMass++;
f57d136a 283 if (muonTrack->GetMatchTrigger() && (esd->GetTriggerMask() & ptTrig))// match with trigger
6678cd54 284 EventInMassMatch++;
285
5473f16a 286 hRapResonance->Fill(fVtot.Rapidity());
287 hPtResonance->Fill(fVtot.Pt());
288 }
289
290 } // if (fCharge * fCharge2) == -1)
291 } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax))
292 } // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++)
293 } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) )
294 } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)
295
296 hNumberOfTrack->Fill(nTracks);
48d6b312 297 // esdFile->Delete();
5473f16a 298 } // for (Int_t iEvent = FirstEvent;
299
ac3c5325 300// Loop over events for bg event
301
302 Double_t thetaPlus, phiPlus;
303 Double_t thetaMinus, phiMinus;
304 Float_t PtMinus, PtPlus;
305
306 for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) {
307
308 hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus);
309 hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus);
310 PtPlus = hPtMuonPlus->GetRandom();
311 PtMinus = hPtMuonMinus->GetRandom();
312
313 fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus);
314 fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus);
315 fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus);
316
317 fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
318 fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
319
320 fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus);
321 fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus);
322 fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus);
323
324 fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
325 fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
326
327 // invariant mass
328 fVtot = fV1 + fV2;
329
330 // fill histos hInvMassAll and hInvMassRes
331 hInvMassBg->Fill(fVtot.M());
332 hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() );
333 }
334
5473f16a 335 histoFile->Write();
336 histoFile->Close();
337
6678cd54 338 cout << endl;
5473f16a 339 cout << "EventInMass " << EventInMass << endl;
6678cd54 340 cout << "NbTrigger " << NbTrigger << endl;
341 cout << "EventInMass match with trigger " << EventInMassMatch << endl;
5473f16a 342
343 return kTRUE;
344}
345