ana_multi.C File Reference

#include "../auxi.C"

Go to the source code of this file.

Functions
int	SelectTruePid (PndAnalysis *ana, RhoCandList &l)
void	printCand (RhoCandidate *c)
void	countDoubles (RhoCandList &l, int &n1, int &n2, int &n3)
int	ana_multi (int nevts=100)

Function Documentation

int ana_multi

(

int

nevts = 100

)

Definition at line 57 of file ana_multi.C.

References RhoKinFitter::Add4MomConstraint(), RhoKinFitter::AddMassConstraint(), CloseGeoManager(), RhoCandList::Combine(), countDoubles(), ctime, Double_t, PndAnalysis::FillList(), RhoKinFitter::Fit(), RhoFitterBase::Fit(), fRun, RhoFitterBase::GetChi2(), PndAnalysis::GetEntries(), PndAnalysis::GetEvent(), RhoCandList::GetLength(), RhoFitterBase::GetProb(), hvpos, i, RhoCandidate::M(), PndAnalysis::McTruthMatch(), muminus, muplus, out, P, piminus, piplus, PndAnalysis::PndAnalysis(), RhoCandidate::Pos(), rtdb, rtime, RhoCandList::Select(), SelectTruePid(), RhoCandList::SetType(), and TString.

{
        TDatabasePDG::Instance()->AddParticle("pbarpSystem","pbarpSystem",1.9,kFALSE,0.1,0,"",88888);
        TStopwatch fTimer;
        // *** some variables
        int i=0,j=0, k=0, l=0;
        gStyle->SetOptFit(1011);

        // *** the output file for FairRunAna
        TString OutFile="outputmult.root";

        // *** the files coming from the simulation
        TString inPidFile  = "psi2s_jpsi2pi_jpsi_mumu_pidmult.root";    // this file contains the PndPidCandidates and McTruth
        //TString inRecFile  = "psi2s_jpsi2pi_jpsi_mumu_recomult.root";    // this file contains the PndTracks and McTruth
        //TString inSimFile  = "psi2s_jpsi2pi_jpsi_mumu_sim.root";    // this file contains the PndTracks and McTruth
        //TString inDigiFile  = "psi2s_jpsi2pi_jpsi_mumu_digi.root";    // this file contains the PndTracks and McTruth
        TString inParFile  = "psi2s_jpsi2pi_jpsi_mumu_par.root";

        // *** PID table with selection thresholds; can be modified by the user
        TString pidParFile = TString(gSystem->Getenv("VMCWORKDIR"))+"/macro/params/all.par";

        // *** initialization
        FairLogger::GetLogger()->SetLogToFile(kFALSE);
        FairRunAna* fRun = new FairRunAna();
        FairRuntimeDb* rtdb = fRun->GetRuntimeDb();
        fRun->SetInputFile(inPidFile);
        //fRun->AddFriend(inRecFile);
        //fRun->AddFriend(inDigiFile);
        //fRun->AddFriend(inSimFile);

        // *** setup parameter database
        FairParRootFileIo* parIO = new FairParRootFileIo();
        parIO->open(inParFile);
        FairParAsciiFileIo* parIOPid = new FairParAsciiFileIo();
        parIOPid->open(pidParFile.Data(),"in");

        rtdb->setFirstInput(parIO);
        rtdb->setSecondInput(parIOPid);
        rtdb->setOutput(parIO);

        fRun->SetOutputFile(OutFile);
        fRun->Init();

        // *** create an output file for all histograms
        TFile *out = TFile::Open("output_anamulti.root","RECREATE");

        // *** create some histograms
        TH1F *hmomtrk    = new TH1F("hmomtrk","track momentum (all)",200,0,5);
        TH1F *hthttrk    = new TH1F("hthttrk","track theta (all)",200,0,3.1415);

        TH1F *hjpsim_all = new TH1F("hjpsim_all","J/#psi mass (all)",200,0,4.5);
        TH1F *hpsim_all  = new TH1F("hpsim_all","#psi(2S) mass (all)",200,0,5);

        TH1F *hjpsim_lpid = new TH1F("hjpsim_lpid","J/#psi mass (loose pid)",200,0,4.5);
        TH1F *hpsim_lpid  = new TH1F("hpsim_lpid","#psi(2S) mass (loose pid)",200,0,5);

        TH1F *hjpsim_tpid = new TH1F("hjpsim_tpid","J/#psi mass (tight pid)",200,0,4.5);
        TH1F *hpsim_tpid  = new TH1F("hpsim_tpid","#psi(2S) mass (tight pid)",200,0,5);

        TH1F *hjpsim_trpid = new TH1F("hjpsim_trpid","J/#psi mass (true pid)",200,0,4.5);
        TH1F *hpsim_trpid  = new TH1F("hpsim_trpid","#psi(2S) mass (true pid)",200,0,5);

        TH1F *hjpsim_ftm = new TH1F("hjpsim_ftm","J/#psi mass (full truth match)",200,0,4.5);
        TH1F *hpsim_ftm  = new TH1F("hpsim_ftm","#psi(2S) mass (full truth match)",200,0,5);

        TH1F *hjpsim_nm = new TH1F("hjpsim_nm","J/#psi mass (no truth match)",200,0,4.5);
        TH1F *hpsim_nm  = new TH1F("hpsim_nm","#psi(2S) mass (no truth match)",200,0,5);

        TH1F *hjpsim_diff = new TH1F("hjpsim_diff","J/#psi mass diff to truth",100,-2,2);
        TH1F *hpsim_diff  = new TH1F("hpsim_diff","#psi(2S) mass diff to truth",100,-2,2);

        TH1F *hjpsim_vf   = new TH1F("hjpsim_vf","J/#psi mass (vertex fit)",200,0,4.5);
        TH1F *hjpsim_4cf  = new TH1F("hjpsim_4cf","J/#psi mass (4C fit)",200,0,4.5);
        TH1F *hjpsim_mcf  = new TH1F("hjpsim_mcf","J/#psi mass (mass constraint fit)",200,0,4.5);

        TH1F *hjpsi_chi2_vf  = new TH1F("hjpsi_chi2_vf", "J/#psi: #chi^{2} vertex fit",100,0,10);
        TH1F *hpsi_chi2_4c   = new TH1F("hpsi_chi2_4c",  "#psi(2S): #chi^{2} 4C fit",100,0,250);
        TH1F *hjpsi_chi2_mf  = new TH1F("hjpsi_chi2_mf", "J/#psi: #chi^{2} mass fit",100,0,10);

        TH1F *hjpsi_prob_vf  = new TH1F("hjpsi_prob_vf", "J/#psi: Prob vertex fit",100,0,1);
        TH1F *hpsi_prob_4c   = new TH1F("hpsi_prob_4c",  "#psi(2S): Prob 4C fit",100,0,1);
        TH1F *hjpsi_prob_mf  = new TH1F("hjpsi_prob_mf", "J/#psi: Prob mass fit",100,0,1);

        TH2F *hvpos = new TH2F("hvpos","(x,y) projection of fitted decay vertex",100,-2,2,100,-2,2);

        //
        // Now the analysis stuff comes...
        //

        // *** the data reader object
        PndAnalysis* theAnalysis = new PndAnalysis();
  //theAnalysis->SetVerbose(5);
        if (nevts==0) nevts= theAnalysis->GetEntries();

        // *** RhoCandLists for the analysis
        RhoCandList chrg, muplus, muminus, piplus, piminus, jpsi, psi2s;
        RhoCandList muplusloose, muminusloose, piplusloose, piminusloose, jpsiloose, psi2sloose;
        RhoCandList muplustight, muminustight, piplustight, piminustight, jpsitight, psi2stight;

        // *** Mass selector for the jpsi cands
        double m0_jpsi = TDatabasePDG::Instance()->GetParticle("J/psi")->Mass();   // Get nominal PDG mass of the J/psi
        RhoMassParticleSelector *jpsiMassSel=new RhoMassParticleSelector("jpsi",m0_jpsi,1.0);

        // *** the lorentz vector of the initial psi(2S)
        TLorentzVector ini(0, 0, 6.231552, 7.240065);

        // ***
        // the event loop
        // ***

        int cntdbltrk=0, cntdblmc=0, cntdblboth=0, cnttrk=0, cnt_dbl_jpsi=0, cnt_dbl_psip=0;

        while (theAnalysis->GetEvent() && i++<nevts)
        {
                if ((i%100)==0) cout<<"evt " << i << endl;

                // *** Select with no PID info ('All'); type and mass are set
                theAnalysis->FillList(chrg,    "Charged");
                theAnalysis->FillList(muplus,  "MuonAllPlus");
                theAnalysis->FillList(muminus, "MuonAllMinus");
                theAnalysis->FillList(piplus,  "PionAllPlus");
                theAnalysis->FillList(piminus, "PionAllMinus");

                // *** momentum and theta histograms
                for (j=0;j<muplus.GetLength();++j)
                {
                        hmomtrk->Fill(muplus[j]->P());
                        hthttrk->Fill(muplus[j]->P4().Theta());
                }
                for (j=0;j<muminus.GetLength();++j)
                {
                        hmomtrk->Fill(muminus[j]->P());
                        hthttrk->Fill(muminus[j]->P4().Theta());
                }

                cnttrk += chrg.GetLength();

                int n1, n2, n3;

                countDoubles(chrg,n1,n2,n3);
                cntdbltrk  += n1;
                cntdblmc   += n2;
                cntdblboth += n3;

                // *** combinatorics for J/psi -> mu+ mu-
                jpsi.Combine(muplus, muminus);

    //cout << jpsi.GetLength() << " jpsis "
         //<< chrg.GetLength() << " chrg "
         //<< muplus.GetLength() << " muplus "
         //<< muminus.GetLength() << " muminus "
         //<< piplus.GetLength() << " piplus "
         //<< piminus.GetLength() << " piminus "
         //<< endl;

                // ***
                // *** do the TRUTH MATCH for jpsi
                // ***
                jpsi.SetType(443);

                int nm = 0;
                for (j=0;j<jpsi.GetLength();++j)
                {
                        hjpsim_all->Fill( jpsi[j]->M() );

                        if (theAnalysis->McTruthMatch(jpsi[j]))
                        {
                                nm++;
                                hjpsim_ftm->Fill( jpsi[j]->M() );
                                hjpsim_diff->Fill( jpsi[j]->GetMcTruth()->M() - jpsi[j]->M() );
                        }
                        else
                                hjpsim_nm->Fill( jpsi[j]->M() );
                }

                if (nm>1) cnt_dbl_jpsi++;
                // ***
                // *** do VERTEX FIT (J/psi)
                // ***
                for (j=0;j<jpsi.GetLength();++j)
                {
                        RhoKinVtxFitter vtxfitter(jpsi[j]);     // instantiate a vertex fitter
                        vtxfitter.Fit();

                        double chi2_vtx = vtxfitter.GetChi2();  // access chi2 of fit
                        double prob_vtx = vtxfitter.GetProb();  // access probability of fit
                        hjpsi_chi2_vf->Fill(chi2_vtx);
                        hjpsi_prob_vf->Fill(prob_vtx);

                        if ( prob_vtx > 0.01 )                          // when good enough, fill some histos
                        {
                                RhoCandidate *jfit = jpsi[j]->GetFit(); // access the fitted cand
                                TVector3 jVtx=jfit->Pos();              // and the decay vertex position

                                hjpsim_vf->Fill(jfit->M());
                                hvpos->Fill(jVtx.X(),jVtx.Y());
                        }
                }

                // *** some rough mass selection
                jpsi.Select(jpsiMassSel);

                // *** combinatorics for psi(2S) -> J/psi pi+ pi-
                psi2s.Combine(jpsi, piplus, piminus);

                // ***
                // *** do the TRUTH MATCH for psi(2S)
                // ***
                psi2s.SetType(88888);

                nm = 0;
                for (j=0;j<psi2s.GetLength();++j)
                {
                        hpsim_all->Fill( psi2s[j]->M() );
                        if (theAnalysis->McTruthMatch(psi2s[j]))
                        {
                                nm++;
                                hpsim_ftm->Fill( psi2s[j]->M() );
                                hpsim_diff->Fill( psi2s[j]->GetMcTruth()->M() - psi2s[j]->M() );
                        }
                        else
                                hpsim_nm->Fill( psi2s[j]->M() );
                }
                if (nm>1) cnt_dbl_psip++;


                // ***
                // *** do 4C FIT (initial psi(2S) system)
                // ***
                for (j=0;j<psi2s.GetLength();++j)
                {
                        RhoKinFitter fitter(psi2s[j]);  // instantiate the kin fitter in psi(2S)
                        fitter.Add4MomConstraint(ini);  // set 4 constraint
                        fitter.Fit();                       // do fit

                        double chi2_4c = fitter.GetChi2();      // get chi2 of fit
                        double prob_4c = fitter.GetProb();      // access probability of fit
                        hpsi_chi2_4c->Fill(chi2_4c);
                        hpsi_prob_4c->Fill(prob_4c);

                        if ( prob_4c > 0.01 )                   // when good enough, fill some histo
                        {
                                RhoCandidate *jfit = psi2s[j]->Daughter(0)->GetFit();   // get fitted J/psi

                                hjpsim_4cf->Fill(jfit->M());
                        }
                }


                // ***
                // *** do MASS CONSTRAINT FIT (J/psi)
                // ***
                for (j=0;j<jpsi.GetLength();++j)
                {
                        RhoKinFitter mfitter(jpsi[j]);          // instantiate the RhoKinFitter in psi(2S)
                        mfitter.AddMassConstraint(m0_jpsi);     // add the mass constraint
                        mfitter.Fit();                                          // do fit

                        double chi2_m = mfitter.GetChi2();      // get chi2 of fit
                        double prob_m = mfitter.GetProb();      // access probability of fit
                        hjpsi_chi2_mf->Fill(chi2_m);
                        hjpsi_prob_mf->Fill(prob_m);

                        if ( prob_m > 0.01 )                            // when good enough, fill some histo
                        {
                                RhoCandidate *jfit = jpsi[j]->GetFit(); // access the fitted cand
                                hjpsim_mcf->Fill(jfit->M());
                        }
                }


                // ***
                // *** TRUE PID combinatorics
                // ***

                // *** do MC truth match for PID type
                SelectTruePid(theAnalysis, muplus);
                SelectTruePid(theAnalysis, muminus);
                SelectTruePid(theAnalysis, piplus);
                SelectTruePid(theAnalysis, piminus);

                // *** all combinatorics again with true PID
                jpsi.Combine(muplus, muminus);
                for (j=0;j<jpsi.GetLength();++j) hjpsim_trpid->Fill( jpsi[j]->M() );
                jpsi.Select(jpsiMassSel);

                psi2s.Combine(jpsi, piplus, piminus);
                for (j=0;j<psi2s.GetLength();++j) hpsim_trpid->Fill( psi2s[j]->M() );


                // ***
                // *** LOOSE PID combinatorics
                // ***
                // *** and again with PidAlgoMvd;PidAlgoStt;PidAlgoDrc and loose selection
                theAnalysis->FillList(muplusloose,  "MuonLoosePlus",  "PidAlgoMvd;PidAlgoStt;PidAlgoDrc;PidAlgoDisc;PidAlgoMdtHardCuts");
                theAnalysis->FillList(muminusloose, "MuonLooseMinus", "PidAlgoMvd;PidAlgoStt;PidAlgoDrc;PidAlgoDisc;PidAlgoMdtHardCuts");
                theAnalysis->FillList(piplusloose,  "PionLoosePlus",  "PidAlgoMvd;PidAlgoStt;PidAlgoDrc;PidAlgoDisc");
                theAnalysis->FillList(piminusloose, "PionLooseMinus", "PidAlgoMvd;PidAlgoStt;PidAlgoDrc;PidAlgoDisc");

                jpsiloose.Combine(muplusloose, muminusloose);
                for (j=0;j<jpsiloose.GetLength();++j) hjpsim_lpid->Fill( jpsiloose[j]->M() );
    //cout << jpsiloose.GetLength() << " jpsisloose "
         //<< muplusloose.GetLength() << " muplusloose "
         //<< muminusloose.GetLength() << " muminusloose "
         //<< piplusloose.GetLength() << " piplusloose "
         //<< piminusloose.GetLength() << " piminusloose "
         //<< endl;
                jpsiloose.Select(jpsiMassSel);

                psi2sloose.Combine(jpsiloose, piplusloose, piminusloose);
                for (j=0;j<psi2sloose.GetLength();++j) hpsim_lpid->Fill( psi2sloose[j]->M() );


                // ***
                // *** TIGHT PID combinatorics
                // ***
                // *** and again with PidAlgoMvd;PidAlgoStt and tight selection
                theAnalysis->FillList(muplustight,  "MuonTightPlus",  "PidAlgoMdtHardCuts");
                theAnalysis->FillList(muminustight, "MuonTightMinus", "PidAlgoMdtHardCuts");
                theAnalysis->FillList(piplustight,  "PionLoosePlus",  "PidAlgoMvd;PidAlgoStt;PidAlgoDrc");
                theAnalysis->FillList(piminustight, "PionLooseMinus", "PidAlgoMvd;PidAlgoStt;PidAlgoDrc");

                jpsitight.Combine(muplustight, muminustight);
                for (j=0;j<jpsitight.GetLength();++j) hjpsim_tpid->Fill( jpsitight[j]->M() );
    //cout << jpsitight.GetLength() << " jpsistight "
         //<< muplustight.GetLength() << " muplustight "
         //<< muminustight.GetLength() << " muminustight "
         //<< piplustight.GetLength() << " piplustight "
         //<< piminustight.GetLength() << " piminustight "
         //<< endl;
                jpsitight.Select(jpsiMassSel);

                psi2stight.Combine(jpsitight, piplustight, piminustight);
                for (j=0;j<psi2stight.GetLength();++j) hpsim_tpid->Fill( psi2stight[j]->M() );

        }

        // *** write out all the histos
  cout<<"Write histograms to file "<<out->GetName()<<endl;
        out->cd();

        hmomtrk->Write();
        hthttrk->Write();

        hjpsim_all->Write();
        hpsim_all->Write();
        hjpsim_lpid->Write();
        hpsim_lpid->Write();
        hjpsim_tpid->Write();
        hpsim_tpid->Write();
        hjpsim_trpid->Write();
        hpsim_trpid->Write();

        hjpsim_ftm->Write();
        hpsim_ftm->Write();
        hjpsim_nm->Write();
        hpsim_nm->Write();

        hpsim_diff->Write();
        hjpsim_diff->Write();

        hjpsim_vf->Write();
        hjpsim_4cf->Write();
        hjpsim_mcf->Write();

        hjpsi_chi2_vf->Write();
        hpsi_chi2_4c->Write();
        hjpsi_chi2_mf->Write();

        hjpsi_prob_vf->Write();
        hpsi_prob_4c->Write();
        hjpsi_prob_mf->Write();

        hvpos->Write();

        out->Save();
  cout<<"Write histograms to file "<<out->GetName()<<" done."<<endl;

        // Extract the maximal used memory an add is as Dart measurement
        // This line is filtered by CTest and the value send to CDash
        FairSystemInfo sysInfo;
        Float_t maxMemory=sysInfo.GetMaxMemory();
        cout << "<DartMeasurement name=\"MaxMemory\" type=\"numeric/double\">";
        cout << maxMemory;
        cout << "</DartMeasurement>" << endl;

        fTimer.Stop();
        Double_t rtime = fTimer.RealTime();
        Double_t ctime = fTimer.CpuTime();

        Float_t cpuUsage=ctime/rtime;
        cout << "<DartMeasurement name=\"CpuLoad\" type=\"numeric/double\">";
        cout << cpuUsage;
        cout << "</DartMeasurement>" << endl;

        cout << endl;
        cout << "Real time " << rtime << " s, CPU time " << ctime
                  << "s" << endl;
        cout << "CPU usage " << cpuUsage*100. << "%" << endl;
        cout << "Max Memory " << maxMemory << " MB" << endl;

        cout << "Macro finished successfully." << endl;

  CloseGeoManager();
  return 0;

}

void countDoubles	(	RhoCandList &	l,
		int &	n1,
		int &	n2,
		int &	n3
	)

Definition at line 32 of file ana_multi.C.

References d, fabs(), RhoCandList::GetLength(), and i.

{
        int n_smc  = 0;
        int n_strk = 0;
        int n_both = 0;
        double d = 0.00001;

        for (int i=0;i<l.GetLength()-1;++i)
        {
                for (int j=i+1;j<l.GetLength();++j)
                {
                        TLorentzVector dl = l[i]->P4() - l[j]->P4();

                        bool chkmc = (l[i]->GetMcTruth()==l[j]->GetMcTruth());
                        bool chktrk = (fabs(dl.X())<d) && (fabs(dl.Y())<d) && (fabs(dl.Z())<d) && (fabs(dl.E())<d);
                        if (chkmc) n_smc++;
                        if (chktrk) n_strk++;
                        if (chktrk && chkmc) n_both++;
                }
        }
        n1 = n_strk;
        n2 = n_smc;
        n3 = n_both;
}

void printCand

(

RhoCandidate *

c

)

Definition at line 25 of file ana_multi.C.

References RhoCandidate::P4(), and RhoCandidate::PdgCode().

{
        TLorentzVector lv=c->P4();

        cout <<c->PdgCode()<<" ("<<lv.X()<<"/"<<lv.Y()<<"/"<<lv.Z()<<"/"<<lv.E()<<")"<<endl;
}

int SelectTruePid	(	PndAnalysis *	ana,
		RhoCandList &	l
	)

Definition at line 9 of file ana_multi.C.

References RhoCandList::GetLength(), PndAnalysis::McTruthMatch(), and RhoCandList::Remove().

{
        int removed = 0;

        for (int ii=l.GetLength()-1;ii>=0;--ii)
        {
                if ( !(ana->McTruthMatch(l[ii])) )
                {
                        l.Remove(l[ii]);
                        removed++;
                }
        }

        return removed;
}