[u/mrichter/AliRoot.git] / MUON / MUONmassPlot_ESD.C

#if !defined(__CINT__) || defined(__MAKECINT__)
// ROOT includes
#include "TBranch.h"
#include "TClonesArray.h"
#include "TLorentzVector.h"
#include "TFile.h"
#include "TH1.h"
#include "TParticle.h"
#include "TTree.h"
#include <Riostream.h>

// STEER includes
#include "AliRun.h"
#include "AliRunLoader.h"
#include "AliHeader.h"
#include "AliLoader.h"
#include "AliStack.h"
#include "AliESD.h"

// MUON includes
#include "AliESDMuonTrack.h"
#endif
//
// Macro MUONmassPlot.C for ESD
// Ch. Finck, Subatech, April. 2004
//

// macro to make invariant mass plots
// for combinations of 2 muons with opposite charges,
// from root file "MUON.tracks.root" containing the result of track reconstruction.
// Histograms are stored on the "MUONmassPlot.root" file.
// introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...)
// using Invariant Mass for rapidity.

// Arguments:
//   FirstEvent (default 0)
//   LastEvent (default 0)
//   ResType (default 553)
//      553 for Upsilon, anything else for J/Psi
//   Chi2Cut (default 100)
//      to keep only tracks with chi2 per d.o.f. < Chi2Cut
//   PtCutMin (default 1)
//      to keep only tracks with transverse momentum > PtCutMin
//   PtCutMax (default 10000)
//      to keep only tracks with transverse momentum < PtCutMax
//   massMin (default 9.17 for Upsilon) 
//      &  massMax (default 9.77 for Upsilon) 
//         to calculate the reconstruction efficiency for resonances with invariant mass
//         massMin < mass < massMax.

// Add parameters and histograms for analysis 

Bool_t MUONmassPlot(char* filename = "galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 10000,
		  char* esdFileName = "AliESDs.root", Int_t ResType = 553, 
                  Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000.,
                  Float_t massMin = 9.17,Float_t massMax = 9.77)
{
  cout << "MUONmassPlot " << endl;
  cout << "FirstEvent " << FirstEvent << endl;
  cout << "LastEvent " << LastEvent << endl;
  cout << "ResType " << ResType << endl;
  cout << "Chi2Cut " << Chi2Cut << endl;
  cout << "PtCutMin " << PtCutMin << endl;
  cout << "PtCutMax " << PtCutMax << endl;
  cout << "massMin " << massMin << endl;
  cout << "massMax " << massMax << endl;

 
  //Reset ROOT and connect tree file
  gROOT->Reset();


  // File for histograms and histogram booking
  TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE");
  TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.);
  TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.);
  TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.);
  TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.);
  TH1F *hInvMassRes;

  if (ResType == 553) {
    hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.);
  } else {
    hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.);
  }

  TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5);
  TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2);
  TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2);
  TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.);


  // settings
  Int_t EventInMass = 0;
  Float_t muonMass = 0.105658389;
//   Float_t UpsilonMass = 9.46037;
//   Float_t JPsiMass = 3.097;

  Double_t thetaX, thetaY, pYZ;
  Double_t fPxRec1, fPyRec1, fPzRec1, fE1;
  Double_t fPxRec2, fPyRec2, fPzRec2, fE2;
  Int_t fCharge, fCharge2;

  Int_t ntrackhits, nevents;
  Double_t fitfmin;

 
  TLorentzVector fV1, fV2, fVtot;
  
  // open run loader and load gAlice, kinematics and header
  AliRunLoader* runLoader = AliRunLoader::Open(filename);
  if (!runLoader) {
    Error("MUONmass_ESD", "getting run loader from file %s failed", 
	    filename);
    return kFALSE;
  }

  runLoader->LoadgAlice();
  gAlice = runLoader->GetAliRun();
  if (!gAlice) {
    Error("MUONmass_ESD", "no galice object found");
    return kFALSE;
  }
  

  // open the ESD file
  TFile* esdFile = TFile::Open(esdFileName);
  if (!esdFile || !esdFile->IsOpen()) {
    Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName);
    return kFALSE;
  }
  
  runLoader->LoadHeader();
  nevents = runLoader->GetNumberOfEvents();
        
  // Loop over events
  for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) {

    // get current event
    runLoader->GetEvent(iEvent);
    
    // get the event summary data
    char esdName[256]; 
    sprintf(esdName, "ESD%d", iEvent);
    AliESD* esd = (AliESD*) esdFile->Get(esdName);
    if (!esd) {
      Error("MUONmass_ESD", "no ESD object found for event %d", iEvent);
      return kFALSE;
    }

    Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; //

    //    printf("\n Nb of events analysed: %d\r",iEvent);
    //   cout << " number of tracks: " << nrectracks  <<endl;
  
    // loop over all reconstructed tracks (also first track of combination)
    for (Int_t iTrack = 0; iTrack <  nTracks;  iTrack++) {

      AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack);

      thetaX = muonTrack->GetThetaX();
      thetaY = muonTrack->GetThetaY();

      pYZ     =  1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
      fPzRec1  = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
      fPxRec1  = fPzRec1 * TMath::Tan(thetaX);
      fPyRec1  = fPzRec1 * TMath::Tan(thetaY);
      fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));

      fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
      fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);

      ntrackhits = muonTrack->GetNHit();
      fitfmin    = muonTrack->GetChi2();

      // transverse momentum
      Float_t pt1 = fV1.Pt();

      // total momentum
      Float_t p1 = fV1.P();

      // Rapidity
      Float_t rapMuon1 = fV1.Rapidity();

      // chi2 per d.o.f.
      Float_t ch1 =  fitfmin / (2.0 * ntrackhits - 5);
//      printf(" px %f py %f pz %f NHits %d  Norm.chi2 %f charge %d\n", 
// 	     fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge);

      // condition for good track (Chi2Cut and PtCut)

      if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) {

	// fill histos hPtMuon and hChi2PerDof
	hPtMuon->Fill(pt1);
	hPMuon->Fill(p1);
	hChi2PerDof->Fill(ch1);
	hRapMuon->Fill(rapMuon1);

	// loop over second track of combination
	for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
	  
	  AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2);

	  thetaX = muonTrack->GetThetaX();
	  thetaY = muonTrack->GetThetaY();

	  pYZ     =  1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
	  fPzRec2  = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
	  fPxRec2  = fPzRec2 * TMath::Tan(thetaX);
	  fPyRec2  = fPzRec2 * TMath::Tan(thetaY);
	  fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));

	  fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
	  fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);

	  ntrackhits = muonTrack->GetNHit();
	  fitfmin    = muonTrack->GetChi2();

	  // transverse momentum
	  Float_t pt2 = fV2.Pt();

	  // chi2 per d.o.f.
	  Float_t ch2 = fitfmin  / (2.0 * ntrackhits - 5);

	  // condition for good track (Chi2Cut and PtCut)
	  if ((ch2 < Chi2Cut) && (pt2 > PtCutMin)  && (pt2 < PtCutMax)) {

	    // condition for opposite charges
	    if ((fCharge * fCharge2) == -1) {

	      // invariant mass
	      fVtot = fV1 + fV2;
	      Float_t invMass = fVtot.M();
	            
	      // fill histos hInvMassAll and hInvMassRes
	      hInvMassAll->Fill(invMass);
	      hInvMassRes->Fill(invMass);

	      if (invMass > massMin && invMass < massMax) {
		EventInMass++;
  		hRapResonance->Fill(fVtot.Rapidity());
  		hPtResonance->Fill(fVtot.Pt());
	      }

	    } // if (fCharge * fCharge2) == -1)
	  } // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax))
	} //  for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++)
      } // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) )
    } // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)

    hNumberOfTrack->Fill(nTracks);
  } // for (Int_t iEvent = FirstEvent;

  histoFile->Write();
  histoFile->Close();

  cout << "MUONmassPlot " << endl;
  cout << "FirstEvent " << FirstEvent << endl;
  cout << "LastEvent " << LastEvent << endl;
  cout << "ResType " << ResType << endl;
  cout << "Chi2Cut " << Chi2Cut << endl;
  cout << "PtCutMin " << PtCutMin << endl;
  cout << "PtCutMax " << PtCutMax << endl;
  cout << "massMin " << massMin << endl;
  cout << "massMax " << massMax << endl;
  cout << "EventInMass " << EventInMass << endl;

  return kTRUE;
}
Commit	Line	Data
5473f16a	1	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
	2	// ROOT includes
	3	#include "TBranch.h"
	4	#include "TClonesArray.h"
	5	#include "TLorentzVector.h"
	6	#include "TFile.h"
	7	#include "TH1.h"
	8	#include "TParticle.h"
	9	#include "TTree.h"
	10	#include <Riostream.h>
	11
	12	// STEER includes
	13	#include "AliRun.h"
	14	#include "AliRunLoader.h"
	15	#include "AliHeader.h"
	16	#include "AliLoader.h"
	17	#include "AliStack.h"
	18	#include "AliESD.h"
	19
	20	// MUON includes
	21	#include "AliESDMuonTrack.h"
	22	#endif
	23	//
	24	// Macro MUONmassPlot.C for ESD
	25	// Ch. Finck, Subatech, April. 2004
	26	//
	27
	28	// macro to make invariant mass plots
	29	// for combinations of 2 muons with opposite charges,
	30	// from root file "MUON.tracks.root" containing the result of track reconstruction.
	31	// Histograms are stored on the "MUONmassPlot.root" file.
	32	// introducing TLorentzVector for parameter calculations (Pt, P,rap,etc...)
	33	// using Invariant Mass for rapidity.
	34
	35	// Arguments:
	36	// FirstEvent (default 0)
	37	// LastEvent (default 0)
	38	// ResType (default 553)
	39	// 553 for Upsilon, anything else for J/Psi
	40	// Chi2Cut (default 100)
	41	// to keep only tracks with chi2 per d.o.f. < Chi2Cut
	42	// PtCutMin (default 1)
	43	// to keep only tracks with transverse momentum > PtCutMin
	44	// PtCutMax (default 10000)
	45	// to keep only tracks with transverse momentum < PtCutMax
	46	// massMin (default 9.17 for Upsilon)
	47	// & massMax (default 9.77 for Upsilon)
	48	// to calculate the reconstruction efficiency for resonances with invariant mass
	49	// massMin < mass < massMax.
	50
	51	// Add parameters and histograms for analysis
	52
	53	Bool_t MUONmassPlot(char* filename = "galice.root", Int_t FirstEvent = 0, Int_t LastEvent = 10000,
	54	char* esdFileName = "AliESDs.root", Int_t ResType = 553,
	55	Float_t Chi2Cut = 100., Float_t PtCutMin = 1., Float_t PtCutMax = 10000.,
	56	Float_t massMin = 9.17,Float_t massMax = 9.77)
	57	{
	58	cout << "MUONmassPlot " << endl;
	59	cout << "FirstEvent " << FirstEvent << endl;
	60	cout << "LastEvent " << LastEvent << endl;
	61	cout << "ResType " << ResType << endl;
	62	cout << "Chi2Cut " << Chi2Cut << endl;
	63	cout << "PtCutMin " << PtCutMin << endl;
	64	cout << "PtCutMax " << PtCutMax << endl;
65	cout << "massMin " << massMin << endl;
66	cout << "massMax " << massMax << endl;
67
68
69	//Reset ROOT and connect tree file
70	gROOT->Reset();
71
72
73	// File for histograms and histogram booking
74	TFile *histoFile = new TFile("MUONmassPlot.root", "RECREATE");
75	TH1F *hPtMuon = new TH1F("hPtMuon", "Muon Pt (GeV/c)", 100, 0., 20.);
76	TH1F *hPMuon = new TH1F("hPMuon", "Muon P (GeV/c)", 100, 0., 200.);
77	TH1F *hChi2PerDof = new TH1F("hChi2PerDof", "Muon track chi2/d.o.f.", 100, 0., 20.);
78	TH1F *hInvMassAll = new TH1F("hInvMassAll", "Mu+Mu- invariant mass (GeV/c2)", 480, 0., 12.);
79	TH1F *hInvMassRes;
80
81	if (ResType == 553) {
82	hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.);
83	} else {
84	hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around J/Psi", 80, 0., 5.);
85	}
86
87	TH1F *hNumberOfTrack = new TH1F("hNumberOfTrack","nb of track /evt ",20,-0.5,19.5);
88	TH1F *hRapMuon = new TH1F("hRapMuon"," Muon Rapidity",50,-4.5,-2);
89	TH1F *hRapResonance = new TH1F("hRapResonance"," Resonance Rapidity",50,-4.5,-2);
90	TH1F *hPtResonance = new TH1F("hPtResonance", "Resonance Pt (GeV/c)", 100, 0., 20.);
91
92
93	// settings
94	Int_t EventInMass = 0;
95	Float_t muonMass = 0.105658389;
96	// Float_t UpsilonMass = 9.46037;
97	// Float_t JPsiMass = 3.097;
98
99	Double_t thetaX, thetaY, pYZ;
100	Double_t fPxRec1, fPyRec1, fPzRec1, fE1;
101	Double_t fPxRec2, fPyRec2, fPzRec2, fE2;
102	Int_t fCharge, fCharge2;
103
104	Int_t ntrackhits, nevents;
105	Double_t fitfmin;
106
107
108	TLorentzVector fV1, fV2, fVtot;
109
110	// open run loader and load gAlice, kinematics and header
111	AliRunLoader* runLoader = AliRunLoader::Open(filename);
112	if (!runLoader) {
113	Error("MUONmass_ESD", "getting run loader from file %s failed",
114	filename);
115	return kFALSE;
116	}
117
118	runLoader->LoadgAlice();
119	gAlice = runLoader->GetAliRun();
120	if (!gAlice) {
121	Error("MUONmass_ESD", "no galice object found");
122	return kFALSE;
123	}
124
125
126	// open the ESD file
127	TFile* esdFile = TFile::Open(esdFileName);
128	if (!esdFile \|\| !esdFile->IsOpen()) {
129	Error("MUONmass_ESD", "opening ESD file %s failed", esdFileName);
130	return kFALSE;
131	}
132
133	runLoader->LoadHeader();
134	nevents = runLoader->GetNumberOfEvents();
135
136	// Loop over events
137	for (Int_t iEvent = FirstEvent; iEvent <= TMath::Min(LastEvent, nevents - 1); iEvent++) {
138
139	// get current event
140	runLoader->GetEvent(iEvent);
141
142	// get the event summary data
143	char esdName[256];
144	sprintf(esdName, "ESD%d", iEvent);
145	AliESD* esd = (AliESD*) esdFile->Get(esdName);
146	if (!esd) {
147	Error("MUONmass_ESD", "no ESD object found for event %d", iEvent);
148	return kFALSE;
149	}
150
151	Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; //
152
153	// printf("\n Nb of events analysed: %d\r",iEvent);
154	// cout << " number of tracks: " << nrectracks <<endl;
155
156	// loop over all reconstructed tracks (also first track of combination)
157	for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
158
159	AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack);
160
161	thetaX = muonTrack->GetThetaX();
162	thetaY = muonTrack->GetThetaY();
163
164	pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
165	fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
166	fPxRec1 = fPzRec1 * TMath::Tan(thetaX);
167	fPyRec1 = fPzRec1 * TMath::Tan(thetaY);
168	fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
169
170	fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
171	fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
172
173	ntrackhits = muonTrack->GetNHit();
174	fitfmin = muonTrack->GetChi2();
175
176	// transverse momentum
177	Float_t pt1 = fV1.Pt();
178
179	// total momentum
180	Float_t p1 = fV1.P();
181
182	// Rapidity
183	Float_t rapMuon1 = fV1.Rapidity();
184
185	// chi2 per d.o.f.
186	Float_t ch1 = fitfmin / (2.0 * ntrackhits - 5);
187	// printf(" px %f py %f pz %f NHits %d Norm.chi2 %f charge %d\n",
188	// fPxRec1, fPyRec1, fPzRec1, ntrackhits, ch1, fCharge);
189
190	// condition for good track (Chi2Cut and PtCut)
191
192	if ((ch1 < Chi2Cut) && (pt1 > PtCutMin) && (pt1 < PtCutMax)) {
193
194	// fill histos hPtMuon and hChi2PerDof
195	hPtMuon->Fill(pt1);
196	hPMuon->Fill(p1);
197	hChi2PerDof->Fill(ch1);
198	hRapMuon->Fill(rapMuon1);
199
200	// loop over second track of combination
201	for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
202
203	AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack2);
204
205	thetaX = muonTrack->GetThetaX();
206	thetaY = muonTrack->GetThetaY();
207
208	pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
209	fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
210	fPxRec2 = fPzRec2 * TMath::Tan(thetaX);
211	fPyRec2 = fPzRec2 * TMath::Tan(thetaY);
212	fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
213
214	fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
215	fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
216
217	ntrackhits = muonTrack->GetNHit();
218	fitfmin = muonTrack->GetChi2();
219
220	// transverse momentum
221	Float_t pt2 = fV2.Pt();
222
223	// chi2 per d.o.f.
224	Float_t ch2 = fitfmin / (2.0 * ntrackhits - 5);
225
226	// condition for good track (Chi2Cut and PtCut)
227	if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax)) {
228
229	// condition for opposite charges
230	if ((fCharge * fCharge2) == -1) {
231
232	// invariant mass
233	fVtot = fV1 + fV2;
234	Float_t invMass = fVtot.M();
235
236	// fill histos hInvMassAll and hInvMassRes
237	hInvMassAll->Fill(invMass);
238	hInvMassRes->Fill(invMass);
239
240	if (invMass > massMin && invMass < massMax) {
241	EventInMass++;
242	hRapResonance->Fill(fVtot.Rapidity());
243	hPtResonance->Fill(fVtot.Pt());
244	}
245
246	} // if (fCharge * fCharge2) == -1)
247	} // if ((ch2 < Chi2Cut) && (pt2 > PtCutMin) && (pt2 < PtCutMax))
248	} // for (Int_t iTrack2 = iTrack + 1; iTrack2 < iTrack; iTrack2++)
249	} // if (ch1 < Chi2Cut) && (pt1 > PtCutMin)&& (pt1 < PtCutMax) )
250	} // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)
251
252	hNumberOfTrack->Fill(nTracks);
253	} // for (Int_t iEvent = FirstEvent;
254
255	histoFile->Write();
256	histoFile->Close();
257
258	cout << "MUONmassPlot " << endl;
259	cout << "FirstEvent " << FirstEvent << endl;
260	cout << "LastEvent " << LastEvent << endl;
261	cout << "ResType " << ResType << endl;
262	cout << "Chi2Cut " << Chi2Cut << endl;
263	cout << "PtCutMin " << PtCutMin << endl;
264	cout << "PtCutMax " << PtCutMax << endl;
265	cout << "massMin " << massMin << endl;
266	cout << "massMax " << massMax << endl;
267	cout << "EventInMass " << EventInMass << endl;
268
269	return kTRUE;
270	}
271