#if !defined(__CINT__) || defined(__MAKECINT__)
// ROOT includes
+#include "TTree.h"
#include "TBranch.h"
#include "TClonesArray.h"
#include "TLorentzVector.h"
#include "TFile.h"
#include "TH1.h"
+#include "TH2.h"
#include "TParticle.h"
#include "TTree.h"
#include <Riostream.h>
#include "AliHeader.h"
#include "AliLoader.h"
#include "AliStack.h"
+#include "AliMagF.h"
#include "AliESD.h"
// MUON includes
//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 *hPtMuonPlus = new TH1F("hPtMuonPlus", "Muon+ Pt (GeV/c)", 100, 0., 20.);
+ TH1F *hPtMuonMinus = new TH1F("hPtMuonMinus", "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;
+ TH1F *hInvMassBg = new TH1F("hInvMassBg", "Mu+Mu- invariant mass BG(GeV/c2)", 480, 0., 12.);
+TH2F *hInvMassAll_vs_Pt = new TH2F("hInvMassAll_vs_Pt","hInvMassAll_vs_Pt",480,0.,12.,80,0.,20.);
+TH2F *hInvMassBgk_vs_Pt = new TH2F("hInvMassBgk_vs_Pt","hInvMassBgk_vs_Pt",480,0.,12.,80,0.,20.);
+TH1F *hInvMassRes;
if (ResType == 553) {
hInvMassRes = new TH1F("hInvMassRes", "Mu+Mu- invariant mass (GeV/c2) around Upsilon", 60, 8., 11.);
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.);
+ TH2F *hThetaPhiPlus = new TH2F("hThetaPhiPlus", "Theta vs Phi +", 760, -190., 190., 400, 160., 180.);
+ TH2F *hThetaPhiMinus = new TH2F("hThetaPhiMinus", "Theta vs Phi -", 760, -190., 190., 400, 160., 180.);
// settings
TLorentzVector fV1, fV2, fVtot;
-
+
+ // set off mag field
+ AliMagF::SetReadField(kFALSE);
+
// open run loader and load gAlice, kinematics and header
AliRunLoader* runLoader = AliRunLoader::Open(filename);
if (!runLoader) {
return kFALSE;
}
- runLoader->LoadgAlice();
- gAlice = runLoader->GetAliRun();
if (!gAlice) {
Error("MUONmass_ESD", "no galice object found");
return kFALSE;
return kFALSE;
}
+ AliESD* esd = new AliESD();
+ TTree* tree = (TTree*) esdFile->Get("esdTree");
+ if (!tree) {
+ Error("CheckESD", "no ESD tree found");
+ return kFALSE;
+ }
+ tree->SetBranchAddress("ESD", &esd);
+
runLoader->LoadHeader();
nevents = runLoader->GetNumberOfEvents();
// 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);
+ tree->GetEvent(iEvent);
if (!esd) {
- Error("MUONmass_ESD", "no ESD object found for event %d", iEvent);
+ Error("CheckESD", "no ESD object found for event %d", iEvent);
return kFALSE;
}
- Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ; //
+ Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
// printf("\n Nb of events analysed: %d\r",iEvent);
- // cout << " number of tracks: " << nrectracks <<endl;
+ // cout << " number of tracks: " << nTracks <<endl;
// loop over all reconstructed tracks (also first track of combination)
for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
thetaY = muonTrack->GetThetaY();
pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
- fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
+ fPzRec1 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
fPxRec1 = fPzRec1 * TMath::Tan(thetaX);
fPyRec1 = fPzRec1 * TMath::Tan(thetaY);
fCharge = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
hPMuon->Fill(p1);
hChi2PerDof->Fill(ch1);
hRapMuon->Fill(rapMuon1);
-
+ if (fCharge > 0) {
+ hPtMuonPlus->Fill(pt1);
+ hThetaPhiPlus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
+ } else {
+ hPtMuonMinus->Fill(pt1);
+ hThetaPhiMinus->Fill(TMath::ATan2(fPyRec1,fPxRec1)*180./TMath::Pi(),TMath::ATan2(pt1,fPzRec1)*180./3.1415);
+ }
// loop over second track of combination
for (Int_t iTrack2 = iTrack + 1; iTrack2 < nTracks; iTrack2++) {
thetaY = muonTrack->GetThetaY();
pYZ = 1./TMath::Abs(muonTrack->GetInverseBendingMomentum());
- fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaX));
+ fPzRec2 = - pYZ / TMath::Sqrt(1.0 + TMath::Tan(thetaY)*TMath::Tan(thetaY));
fPxRec2 = fPzRec2 * TMath::Tan(thetaX);
fPyRec2 = fPzRec2 * TMath::Tan(thetaY);
fCharge2 = Int_t(TMath::Sign(1.,muonTrack->GetInverseBendingMomentum()));
// fill histos hInvMassAll and hInvMassRes
hInvMassAll->Fill(invMass);
hInvMassRes->Fill(invMass);
-
+ hInvMassAll_vs_Pt->Fill(invMass,fVtot.Pt());
if (invMass > massMin && invMass < massMax) {
EventInMass++;
hRapResonance->Fill(fVtot.Rapidity());
} // for (Int_t iTrack = 0; iTrack < nrectracks; iTrack++)
hNumberOfTrack->Fill(nTracks);
+ // esdFile->Delete();
} // for (Int_t iEvent = FirstEvent;
+// Loop over events for bg event
+
+ Double_t thetaPlus, phiPlus;
+ Double_t thetaMinus, phiMinus;
+ Float_t PtMinus, PtPlus;
+
+ for (Int_t iEvent = 0; iEvent < hInvMassAll->Integral(); iEvent++) {
+
+ hThetaPhiPlus->GetRandom2(phiPlus, thetaPlus);
+ hThetaPhiMinus->GetRandom2(phiMinus,thetaMinus);
+ PtPlus = hPtMuonPlus->GetRandom();
+ PtMinus = hPtMuonMinus->GetRandom();
+
+ fPxRec1 = PtPlus * TMath::Cos(TMath::Pi()/180.*phiPlus);
+ fPyRec1 = PtPlus * TMath::Sin(TMath::Pi()/180.*phiPlus);
+ fPzRec1 = PtPlus / TMath::Tan(TMath::Pi()/180.*thetaPlus);
+
+ fE1 = TMath::Sqrt(muonMass * muonMass + fPxRec1 * fPxRec1 + fPyRec1 * fPyRec1 + fPzRec1 * fPzRec1);
+ fV1.SetPxPyPzE(fPxRec1, fPyRec1, fPzRec1, fE1);
+
+ fPxRec2 = PtMinus * TMath::Cos(TMath::Pi()/180.*phiMinus);
+ fPyRec2 = PtMinus * TMath::Sin(TMath::Pi()/180.*phiMinus);
+ fPzRec2 = PtMinus / TMath::Tan(TMath::Pi()/180.*thetaMinus);
+
+ fE2 = TMath::Sqrt(muonMass * muonMass + fPxRec2 * fPxRec2 + fPyRec2 * fPyRec2 + fPzRec2 * fPzRec2);
+ fV2.SetPxPyPzE(fPxRec2, fPyRec2, fPzRec2, fE2);
+
+ // invariant mass
+ fVtot = fV1 + fV2;
+
+ // fill histos hInvMassAll and hInvMassRes
+ hInvMassBg->Fill(fVtot.M());
+ hInvMassBgk_vs_Pt->Fill( fVtot.M(), fVtot.Pt() );
+ }
+
histoFile->Write();
histoFile->Close();
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff