--- /dev/null
+/**************************************************************************
+ * Author: Panos Christakoglou. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/* $Id: AliProtonAnalysisBase.cxx 31056 2009-02-16 14:31:41Z pchrist $ */
+
+//-----------------------------------------------------------------
+// AliProtonAnalysisBase class
+// This is the class to deal with the proton analysis
+// Origin: Panos Christakoglou | Panos.Christakoglou@cern.ch
+//-----------------------------------------------------------------
+#include <Riostream.h>
+#include <TCanvas.h>
+#include <TLatex.h>
+#include <TF1.h>
+#include <TList.h>
+#include <TH1F.h>
+
+#include <AliExternalTrackParam.h>
+#include <AliESDEvent.h>
+#include <AliPID.h>
+#include <AliVertexerTracks.h>
+#include <AliESDpid.h>
+#include <AliTPCPIDResponse.h>
+class AliLog;
+class AliESDVertex;
+
+#include "AliProtonAnalysisBase.h"
+
+ClassImp(AliProtonAnalysisBase)
+
+//____________________________________________________________________//
+AliProtonAnalysisBase::AliProtonAnalysisBase() :
+ TObject(), fProtonAnalysisLevel("ESD"), fAnalysisMC(kFALSE),
+ fTriggerMode(kMB2), kUseOnlineTrigger(kFALSE), kUseOfflineTrigger(kFALSE),
+ fPhysicsSelection(0),
+ fProtonAnalysisMode(kTPC), fProtonPIDMode(kBayesian),
+ fAnalysisEtaMode(kFALSE),
+ fRunQAAnalysis(kFALSE),
+ fVxMax(100.), fVyMax(100.), fVzMax(100.), fMinNumOfContributors(0),
+ fNBinsX(0), fMinX(0.), fMaxX(0.),
+ fNBinsY(0), fMinY(0.), fMaxY(0.),
+ fMinTPCClusters(0), fMinITSClusters(0),
+ fMaxChi2PerTPCCluster(0.), fMaxChi2PerITSCluster(0.),
+ fMaxCov11(0.), fMaxCov22(0.), fMaxCov33(0.), fMaxCov44(0.), fMaxCov55(0.),
+ fMaxSigmaToVertex(0.), fMaxSigmaToVertexTPC(0.),
+ fMaxDCAXY(0.), fMaxDCAXYTPC(0.),
+ fMaxDCAZ(0.), fMaxDCAZTPC(0.),
+ fMaxDCA3D(0.), fMaxDCA3DTPC(0.),
+ fMaxConstrainChi2(0.), fMinTPCdEdxPoints(0),
+ fMinTPCClustersFlag(kFALSE), fMinITSClustersFlag(kFALSE),
+ fMaxChi2PerTPCClusterFlag(kFALSE), fMaxChi2PerITSClusterFlag(kFALSE),
+ fMaxCov11Flag(kFALSE), fMaxCov22Flag(kFALSE),
+ fMaxCov33Flag(kFALSE), fMaxCov44Flag(kFALSE), fMaxCov55Flag(kFALSE),
+ fMaxSigmaToVertexFlag(kFALSE), fMaxSigmaToVertexTPCFlag(kFALSE),
+ fMaxDCAXYFlag(kFALSE), fMaxDCAXYTPCFlag(kFALSE),
+ fMaxDCAZFlag(kFALSE), fMaxDCAZTPCFlag(kFALSE),
+ fMaxDCA3DFlag(kFALSE), fMaxDCA3DTPCFlag(kFALSE),
+ fMaxConstrainChi2Flag(kFALSE),
+ fITSRefitFlag(kFALSE), fTPCRefitFlag(kFALSE),
+ fESDpidFlag(kFALSE), fTPCpidFlag(kFALSE), fTOFpidFlag(kFALSE),
+ fPointOnSPDLayersFlag(0), fPointOnSDDLayersFlag(0), fPointOnSSDLayersFlag(0),
+ fPointOnITSLayer1Flag(0), fPointOnITSLayer2Flag(0),
+ fPointOnITSLayer3Flag(0), fPointOnITSLayer4Flag(0),
+ fPointOnITSLayer5Flag(0), fPointOnITSLayer6Flag(0),
+ fMinTPCdEdxPointsFlag(kFALSE),
+ fPtDependentDcaXY(0), fPtDependentDcaXYFlag(kFALSE), fNSigmaDCAXY(0),
+ fFunctionProbabilityFlag(kFALSE),
+ fNSigma(0), fNRatio(0.),
+ fElectronFunction(0), fMuonFunction(0),
+ fPionFunction(0), fKaonFunction(0), fProtonFunction(0),
+ fDebugMode(kFALSE), fListVertexQA(0) {
+ //Default constructor
+ for(Int_t i = 0; i < 5; i++) fPartFrac[i] = 0.0;
+ /*for(Int_t i = 0; i < 24; i++) {
+ fdEdxMean[i] = 0.0;
+ fdEdxSigma[i] = 0.0;
+ }*/
+
+ fListVertexQA = new TList();
+ fListVertexQA->SetName("fListVertexQA");
+ TH1F *gHistVx = new TH1F("gHistVx",
+ "Vx distribution;V_{x} [cm];Entries",
+ 100,-5.,5.);
+ gHistVx->SetFillColor(kRed-2);
+ fListVertexQA->Add(gHistVx);
+ TH1F *gHistVxAccepted = new TH1F("gHistVxaccepted",
+ "Vx distribution;V_{x} [cm];Entries",
+ 100,-5.,5.);
+ fListVertexQA->Add(gHistVxAccepted);
+ TH1F *gHistVy = new TH1F("gHistVy",
+ "Vy distribution;V_{y} [cm];Entries",
+ 100,-5.,5.);
+ gHistVy->SetFillColor(kRed-2);
+ fListVertexQA->Add(gHistVy);
+ TH1F *gHistVyAccepted = new TH1F("gHistVyaccepted",
+ "Vy distribution;V_{y} [cm];Entries",
+ 100,-5.,5.);
+ fListVertexQA->Add(gHistVyAccepted);
+ TH1F *gHistVz = new TH1F("gHistVz",
+ "Vz distribution;V_{z} [cm];Entries",
+ 100,-25.,25.);
+ gHistVz->SetFillColor(kRed-2);
+ fListVertexQA->Add(gHistVz);
+ TH1F *gHistVzAccepted = new TH1F("gHistVzaccepted",
+ "Vz distribution;V_{z} [cm];Entries",
+ 100,-25.,25.);
+ fListVertexQA->Add(gHistVzAccepted);
+
+ TH1F *gHistNumberOfContributors = new TH1F("gHistNumberOfContributors",
+ "Number of contributors;N_{contr.};Entries",
+ 100,0.,100.);
+ fListVertexQA->Add(gHistNumberOfContributors);
+
+
+}
+
+//____________________________________________________________________//
+AliProtonAnalysisBase::~AliProtonAnalysisBase() {
+ //Default destructor
+ if(fElectronFunction) delete fElectronFunction;
+ if(fMuonFunction) delete fMuonFunction;
+ if(fPionFunction) delete fPionFunction;
+ if(fKaonFunction) delete fKaonFunction;
+ if(fProtonFunction) delete fProtonFunction;
+ if(fListVertexQA) delete fListVertexQA;
+ if(fPtDependentDcaXY) delete fPtDependentDcaXY;
+ if(fPhysicsSelection) delete fPhysicsSelection;
+}
+
+//____________________________________________________________________//
+Double_t AliProtonAnalysisBase::GetParticleFraction(Int_t i, Double_t p) {
+ //Return the a priori probs
+ Double_t partFrac=0;
+ if(fFunctionProbabilityFlag) {
+ if(i == 0) partFrac = fElectronFunction->Eval(p);
+ if(i == 1) partFrac = fMuonFunction->Eval(p);
+ if(i == 2) partFrac = fPionFunction->Eval(p);
+ if(i == 3) partFrac = fKaonFunction->Eval(p);
+ if(i == 4) partFrac = fProtonFunction->Eval(p);
+ }
+ else partFrac = fPartFrac[i];
+
+ return partFrac;
+}
+
+//____________________________________________________________________//
+Bool_t AliProtonAnalysisBase::IsInPhaseSpace(AliESDtrack* const track) {
+ // Checks if the track is outside the analyzed y-Pt phase space
+ Double_t gP = 0.0, gPt = 0.0, gPx = 0.0, gPy = 0.0, gPz = 0.0;
+ Double_t eta = 0.0;
+
+ if((fProtonAnalysisMode == kTPC) || (fProtonAnalysisMode == kHybrid) || (fProtonAnalysisMode == kFullHybrid)) {
+ AliExternalTrackParam *tpcTrack = (AliExternalTrackParam *)track->GetTPCInnerParam();
+ if(!tpcTrack) {
+ gP = 0.0; gPt = 0.0; gPx = 0.0; gPy = 0.0; gPz = 0.0; eta = -10.0;
+ }
+ else {
+ gP = tpcTrack->P();
+ gPt = tpcTrack->Pt();
+ gPx = tpcTrack->Px();
+ gPy = tpcTrack->Py();
+ gPz = tpcTrack->Pz();
+ eta = tpcTrack->Eta();
+ }
+ }//standalone TPC or Hybrid TPC approaches
+ else {
+ gP = track->P();
+ gPt = track->Pt();
+ gPx = track->Px();
+ gPy = track->Py();
+ gPz = track->Pz();
+ eta = track->Eta();
+ }
+
+ if((gPt < fMinY) || (gPt > fMaxY)) {
+ if(fDebugMode)
+ Printf("IsInPhaseSpace: Track rejected because it has a Pt value of %lf (accepted interval: %lf - %lf)",gPt,fMinY,fMaxY);
+ return kFALSE;
+ }
+ if((gP < fMinY) || (gP > fMaxY)) {
+ if(fDebugMode)
+ Printf("IsInPhaseSpace: Track rejected because it has a P value of %lf (accepted interval: %lf - %lf)",gP,fMinY,fMaxY);
+ return kFALSE;
+ }
+ if(fAnalysisEtaMode) {
+ if((eta < fMinX) || (eta > fMaxX)) {
+ if(fDebugMode)
+ Printf("IsInPhaseSpace: Track rejected because it has an eta value of %lf (accepted interval: %lf - %lf)",eta,fMinX,fMaxX);
+ return kFALSE;
+ }
+ }
+ else {
+ if((Rapidity(gPx,gPy,gPz) < fMinX) || (Rapidity(gPx,gPy,gPz) > fMaxX)) {
+ if(fDebugMode)
+ Printf("IsInPhaseSpace: Track rejected because it has a y value of %lf (accepted interval: %lf - %lf)",Rapidity(gPx,gPy,gPz),fMinX,fMaxX);
+ return kFALSE;
+ }
+ }
+
+ return kTRUE;
+}
+
+//____________________________________________________________________//
+Bool_t AliProtonAnalysisBase::IsAccepted(AliESDtrack* track) {
+ // Checks if the track is excluded from the cuts
+ //Int_t fIdxInt[200];
+ //Int_t nClustersITS = track->GetITSclusters(fIdxInt);
+ //Int_t nClustersTPC = track->GetTPCclusters(fIdxInt);
+ Int_t nClustersITS = track->GetITSclusters(0x0);
+ Int_t nClustersTPC = track->GetTPCclusters(0x0);
+
+ Float_t chi2PerClusterITS = -1;
+ if (nClustersITS!=0)
+ chi2PerClusterITS = track->GetITSchi2()/Float_t(nClustersITS);
+ Float_t chi2PerClusterTPC = -1;
+ if (nClustersTPC!=0)
+ chi2PerClusterTPC = track->GetTPCchi2()/Float_t(nClustersTPC);
+
+ Double_t extCov[15];
+ track->GetExternalCovariance(extCov);
+
+ if(fPointOnSPDLayersFlag) {
+ if((!track->HasPointOnITSLayer(0))&&(!track->HasPointOnITSLayer(1))) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on either SPD layers");
+ return kFALSE;
+ }
+ }
+ if(fPointOnSDDLayersFlag) {
+ if((!track->HasPointOnITSLayer(2))&&(!track->HasPointOnITSLayer(3))) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on either SDD layers");
+ return kFALSE;
+ }
+ }
+ if(fPointOnSSDLayersFlag) {
+ if((!track->HasPointOnITSLayer(4))&&(!track->HasPointOnITSLayer(5))) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on either SSD layers");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer1Flag) {
+ if(!track->HasPointOnITSLayer(0)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 1st ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer2Flag) {
+ if(!track->HasPointOnITSLayer(1)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 2nd ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer3Flag) {
+ if(!track->HasPointOnITSLayer(2)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 3rd ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer4Flag) {
+ if(!track->HasPointOnITSLayer(3)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 4th ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer5Flag) {
+ if(!track->HasPointOnITSLayer(4)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 5th ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fPointOnITSLayer6Flag) {
+ if(!track->HasPointOnITSLayer(5)) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it doesn't have a point on the 6th ITS layer");
+ return kFALSE;
+ }
+ }
+ if(fMinITSClustersFlag) {
+ if(nClustersITS < fMinITSClusters) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has %d ITS points (min. requested: %d)",nClustersITS,fMinITSClusters);
+ return kFALSE;
+ }
+ }
+ if(fMaxChi2PerITSClusterFlag) {
+ if(chi2PerClusterITS > fMaxChi2PerITSCluster) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a chi2 per ITS cluster %lf (max. requested: %lf)",chi2PerClusterITS,fMaxChi2PerITSCluster);
+ return kFALSE;
+ }
+ }
+ if(fMinTPCClustersFlag) {
+ if(nClustersTPC < fMinTPCClusters) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has %d TPC clusters (min. requested: %d)",nClustersTPC,fMinTPCClusters);
+ return kFALSE;
+ }
+ }
+ if(fMaxChi2PerTPCClusterFlag) {
+ if(chi2PerClusterTPC > fMaxChi2PerTPCCluster) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a chi2 per TPC cluster %lf (max. requested: %lf)",chi2PerClusterTPC,fMaxChi2PerTPCCluster);
+ return kFALSE;
+ }
+ }
+ if(fMaxCov11Flag) {
+ if(extCov[0] > fMaxCov11) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a cov11 value of %lf (max. requested: %lf)",extCov[0],fMaxCov11);
+ return kFALSE;
+ }
+ }
+ if(fMaxCov22Flag) {
+ if(extCov[2] > fMaxCov22) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a cov22 value of %lf (max. requested: %lf)",extCov[2],fMaxCov22);
+ return kFALSE;
+ }
+ }
+ if(fMaxCov33Flag) {
+ if(extCov[5] > fMaxCov33) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a cov33 value of %lf (max. requested: %lf)",extCov[5],fMaxCov33);
+ return kFALSE;
+ }
+ }
+ if(fMaxCov44Flag) {
+ if(extCov[9] > fMaxCov44) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a cov44 value of %lf (max. requested: %lf)",extCov[9],fMaxCov44);
+ return kFALSE;
+ }
+ }
+ if(fMaxCov55Flag) {
+ if(extCov[14] > fMaxCov55) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has a cov55 value of %lf (max. requested: %lf)",extCov[14],fMaxCov55);
+ return kFALSE;
+ }
+ }
+ if(fMinTPCdEdxPointsFlag) {
+ if(track->GetTPCsignalN() < fMinTPCdEdxPoints) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has %d TPC points for the calculation of the energy loss (min. requested: %d)",track->GetTPCsignalN(),fMinTPCdEdxPoints);
+ return kFALSE;
+ }
+ }
+ if(fITSRefitFlag) {
+ if ((track->GetStatus() & AliESDtrack::kITSrefit) == 0) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has no ITS refit flag");
+ return kFALSE;
+ }
+ }
+ if(fTPCRefitFlag) {
+ if ((track->GetStatus() & AliESDtrack::kTPCrefit) == 0) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has no TPC refit flag");
+ return kFALSE;
+ }
+ }
+ if(fESDpidFlag) {
+ if ((track->GetStatus() & AliESDtrack::kESDpid) == 0) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has no ESD pid flag");
+ return kFALSE;
+ }
+ }
+ if(fTPCpidFlag) {
+ if ((track->GetStatus() & AliESDtrack::kTPCpid) == 0) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has no TPC pid flag");
+ return kFALSE;
+ }
+ }
+ if(fTOFpidFlag) {
+ if ((track->GetStatus() & AliESDtrack::kTOFpid) == 0) {
+ if(fDebugMode)
+ Printf("IsAccepted: Track rejected because it has no TOF pid flag");
+ return kFALSE;
+ }
+ }
+
+ return kTRUE;
+}
+
+//____________________________________________________________________//
+void AliProtonAnalysisBase::SetPtDependentDCAxy(Int_t nSigma,
+ Double_t p0,
+ Double_t p1,
+ Double_t p2) {
+ //Pt dependent dca cut in xy
+ fNSigmaDCAXY = nSigma;
+ fPtDependentDcaXY = new TF1("fPtDependentDcaXY","[0]+[1]/x^[2]",0.1,10.1);
+ fPtDependentDcaXY->SetParameter(0,p0);
+ fPtDependentDcaXY->SetParameter(1,p1);
+ fPtDependentDcaXY->SetParameter(2,p2);
+ fPtDependentDcaXYFlag = kTRUE;
+}
+
+//____________________________________________________________________//
+Bool_t AliProtonAnalysisBase::IsPrimary(AliESDEvent *esd,
+ const AliESDVertex *vertex,
+ AliESDtrack* track) {
+ // Checks if the track is a primary-like candidate
+ const Double_t kMicrometer2Centimeter = 0.0001;
+ Double_t gPt = 0.0, gPx = 0.0, gPy = 0.0, gPz = 0.0;
+ Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0}; //The impact parameters and their covariance.
+ Double_t dca3D = 0.0;
+ Float_t dcaXY = 0.0, dcaZ = 0.0;
+
+ if((fProtonAnalysisMode == kTPC)||(fProtonAnalysisMode == kHybrid)) {
+ AliExternalTrackParam *tpcTrack = (AliExternalTrackParam *)track->GetTPCInnerParam();
+ if(!tpcTrack) {
+ gPt = 0.0; gPx = 0.0; gPy = 0.0; gPz = 0.0;
+ dca[0] = -100.; dca[1] = -100.; dca3D = -100.;
+ cov[0] = -100.; cov[1] = -100.; cov[2] = -100.;
+ }
+ else {
+ gPt = tpcTrack->Pt();
+ gPx = tpcTrack->Px();
+ gPy = tpcTrack->Py();
+ gPz = tpcTrack->Pz();
+ tpcTrack->PropagateToDCA(vertex,
+ esd->GetMagneticField(),
+ 100.,dca,cov);
+ }
+ }//standalone TPC or hybrid TPC approaches
+ if(fProtonAnalysisMode == kFullHybrid) {
+ AliExternalTrackParam *tpcTrack = (AliExternalTrackParam *)track->GetTPCInnerParam();
+ AliExternalTrackParam cParam;
+ if(!tpcTrack) {
+ gPt = 0.0; gPx = 0.0; gPy = 0.0; gPz = 0.0;
+ dca[0] = -100.; dca[1] = -100.; dca3D = -100.;
+ cov[0] = -100.; cov[1] = -100.; cov[2] = -100.;
+ }
+ else {
+ gPt = tpcTrack->Pt();
+ gPx = tpcTrack->Px();
+ gPy = tpcTrack->Py();
+ gPz = tpcTrack->Pz();
+ track->RelateToVertex(vertex,
+ esd->GetMagneticField(),
+ 100.,&cParam);
+ track->GetImpactParameters(dcaXY,dcaZ);
+ dca[0] = dcaXY; dca[1] = dcaZ;
+ }
+ }//standalone TPC or hybrid TPC approaches
+ else {
+ gPt = track->Pt();
+ gPx = track->Px();
+ gPy = track->Py();
+ gPz = track->Pz();
+ track->PropagateToDCA(vertex,
+ esd->GetMagneticField(),
+ 100.,dca,cov);
+ }
+ dca3D = TMath::Sqrt(TMath::Power(dca[0],2) +
+ TMath::Power(dca[1],2));
+
+ if(fMaxSigmaToVertexFlag) {
+ if(GetSigmaToVertex(track) > fMaxSigmaToVertex) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a %lf sigmas to vertex (max. requested: %lf)",GetSigmaToVertex(track),fMaxSigmaToVertex);
+ return kFALSE;
+ }
+ }
+ if(fMaxSigmaToVertexTPCFlag) {
+ if(GetSigmaToVertex(track) > fMaxSigmaToVertexTPC) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a %lf sigmas to vertex TPC (max. requested: %lf)",GetSigmaToVertex(track),fMaxSigmaToVertexTPC);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCAXYFlag) {
+ if(TMath::Abs(dca[0]) > fMaxDCAXY) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(xy) of %lf (max. requested: %lf)",TMath::Abs(dca[0]),fMaxDCAXY);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCAXYTPCFlag) {
+ if(TMath::Abs(dca[0]) > fMaxDCAXYTPC) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(xy) (TPC) of %lf (max. requested: %lf)",TMath::Abs(dca[0]),fMaxDCAXYTPC);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCAZFlag) {
+ if(TMath::Abs(dca[1]) > fMaxDCAZ) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(z) of %lf (max. requested: %lf)",TMath::Abs(dca[1]),fMaxDCAZ);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCAZTPCFlag) {
+ if(TMath::Abs(dca[1]) > fMaxDCAZTPC) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(z) (TPC) of %lf (max. requested: %lf)",TMath::Abs(dca[1]),fMaxDCAZTPC);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCA3DFlag) {
+ if(TMath::Abs(dca3D) > fMaxDCA3D) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(3D) of %lf (max. requested: %lf)",TMath::Abs(dca3D),fMaxDCA3D);
+ return kFALSE;
+ }
+ }
+ if(fMaxDCA3DTPCFlag) {
+ if(TMath::Abs(dca3D) > fMaxDCA3DTPC) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of dca(3D) (TPC) of %lf (max. requested: %lf)",TMath::Abs(dca3D),fMaxDCA3DTPC);
+ return kFALSE;
+ }
+ }
+ if(fMaxConstrainChi2Flag) {
+ if(track->GetConstrainedChi2() > 0)
+ if(TMath::Log(track->GetConstrainedChi2()) > fMaxConstrainChi2) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of the constrained chi2 to the vertex of %lf (max. requested: %lf)",TMath::Log(track->GetConstrainedChi2()),fMaxConstrainChi2);
+ return kFALSE;
+ }
+ }
+ if(fPtDependentDcaXYFlag) {
+ if(TMath::Abs(dca[0]) > kMicrometer2Centimeter*fNSigmaDCAXY*fPtDependentDcaXY->Eval(gPt)) {
+ if(fDebugMode)
+ Printf("IsPrimary: Track rejected because it has a value of the dca(xy) higher than the %d sigma pt dependent cut: %lf (max. requested: %lf)",fNSigmaDCAXY,TMath::Abs(dca[0]),fNSigmaDCAXY*fPtDependentDcaXY->Eval(gPt));
+ return kFALSE;
+ }
+ }
+
+ return kTRUE;
+}
+
+//____________________________________________________________________//
+Float_t AliProtonAnalysisBase::GetSigmaToVertex(AliESDtrack* esdTrack) const {
+ // Calculates the number of sigma to the vertex.
+ Float_t b[2];
+ Float_t bRes[2];
+ Float_t bCov[3];
+ if((fProtonAnalysisMode == kTPC)&&(fProtonAnalysisMode != kHybrid)&&(fProtonAnalysisMode != kFullHybrid))
+ esdTrack->GetImpactParametersTPC(b,bCov);
+ else
+ esdTrack->GetImpactParameters(b,bCov);
+
+ if (bCov[0]<=0 || bCov[2]<=0) {
+ //AliDebug(1, "Estimated b resolution lower or equal zero!");
+ bCov[0]=0; bCov[2]=0;
+ }
+ bRes[0] = TMath::Sqrt(bCov[0]);
+ bRes[1] = TMath::Sqrt(bCov[2]);
+
+ if (bRes[0] == 0 || bRes[1] ==0) return -1;
+
+ Float_t d = TMath::Sqrt(TMath::Power(b[0]/bRes[0],2) + TMath::Power(b[1]/bRes[1],2));
+
+ if (TMath::Exp(-d * d / 2) < 1e-10) return 1000;
+
+ d = TMath::ErfInverse(1 - TMath::Exp(-d * d / 2)) * TMath::Sqrt(2);
+
+ return d;
+}
+
+//____________________________________________________________________//
+Double_t AliProtonAnalysisBase::Rapidity(Double_t gPx,
+ Double_t gPy,
+ Double_t gPz) const {
+ //returns the rapidity of the proton - to be removed
+ Double_t fMass = 9.38270000000000048e-01;
+
+ Double_t gP = TMath::Sqrt(TMath::Power(gPx,2) +
+ TMath::Power(gPy,2) +
+ TMath::Power(gPz,2));
+ Double_t energy = TMath::Sqrt(gP*gP + fMass*fMass);
+ Double_t y = -999;
+ if(energy != gPz)
+ y = 0.5*TMath::Log((energy + gPz)/(energy - gPz));
+
+ return y;
+}
+
+//________________________________________________________________________
+const AliESDVertex* AliProtonAnalysisBase::GetVertex(AliESDEvent* esd,
+ AnalysisMode mode,
+ Double_t gVxMax,
+ Double_t gVyMax,
+ Double_t gVzMax) {
+ // Get the vertex from the ESD and returns it if the vertex is valid
+ // Second argument decides which vertex is used (this selects
+ // also the quality criteria that are applied)
+ const AliESDVertex* vertex = 0;
+ if((mode == kHybrid)||(mode == kFullHybrid))
+ vertex = esd->GetPrimaryVertexSPD();
+ else if(mode == kTPC){
+ Double_t kBz = esd->GetMagneticField();
+ AliVertexerTracks vertexer(kBz);
+ vertexer.SetTPCMode();
+ AliESDVertex *vTPC = vertexer.FindPrimaryVertex(esd);
+ esd->SetPrimaryVertexTPC(vTPC);
+ for (Int_t i=0; i<esd->GetNumberOfTracks(); i++) {
+ AliESDtrack *t = esd->GetTrack(i);
+ t->RelateToVertexTPC(vTPC, kBz, kVeryBig);
+ }
+ delete vTPC;
+ vertex = esd->GetPrimaryVertexTPC();
+ }
+ else if(mode == kGlobal)
+ vertex = esd->GetPrimaryVertex();
+ else
+ Printf("GetVertex: ERROR: Invalid second argument %d", mode);
+
+ if(!vertex) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because there is no valid vertex object");
+ return 0;
+ }
+
+ // check Ncontributors
+ if(vertex->GetNContributors() <= 0) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because the number of contributors for the vertex determination is <= 0");
+ return 0;
+ }
+
+ // check resolution
+ Double_t zRes = vertex->GetZRes();
+ if(zRes == 0) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because the value of the vertex resolution in z is 0");
+ return 0;
+ }
+ ((TH1F *)(fListVertexQA->At(0)))->Fill(vertex->GetXv());
+ ((TH1F *)(fListVertexQA->At(2)))->Fill(vertex->GetYv());
+ ((TH1F *)(fListVertexQA->At(4)))->Fill(vertex->GetZv());
+
+ //check position
+ if(TMath::Abs(vertex->GetXv()) > gVxMax) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because it has a Vx value of %lf cm (accepted interval: -%lf - %lf)",TMath::Abs(vertex->GetXv()),gVxMax,gVxMax);
+ return 0;
+ }
+ if(TMath::Abs(vertex->GetYv()) > gVyMax) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because it has a Vy value of %lf cm (accepted interval: -%lf - %lf)",TMath::Abs(vertex->GetYv()),gVyMax,gVyMax);
+ return 0;
+ }
+ if(TMath::Abs(vertex->GetZv()) > gVzMax) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because it has a Vz value of %lf cm (accepted interval: -%lf - %lf)",TMath::Abs(vertex->GetZv()),gVzMax,gVzMax);
+ return 0;
+ }
+ ((TH1F *)(fListVertexQA->At(1)))->Fill(vertex->GetXv());
+ ((TH1F *)(fListVertexQA->At(3)))->Fill(vertex->GetYv());
+ ((TH1F *)(fListVertexQA->At(5)))->Fill(vertex->GetZv());
+ ((TH1F *)(fListVertexQA->At(6)))->Fill(vertex->GetNContributors());
+
+ //check number of contributors
+ if(fMinNumOfContributors > 0) {
+ if(fMinNumOfContributors > vertex->GetNContributors()) {
+ if(fDebugMode)
+ Printf("GetVertex: Event rejected because it has %d number of contributors (requested minimum: %d)",vertex->GetNContributors(),fMinNumOfContributors);
+
+ return 0;
+ }
+ }
+
+ return vertex;
+}
+
+//________________________________________________________________________
+Bool_t AliProtonAnalysisBase::IsEventTriggered(const AliESDEvent *esd,
+ TriggerMode trigger) {
+ // check if the event was triggered
+ ULong64_t triggerMask = esd->GetTriggerMask();
+ TString firedTriggerClass = esd->GetFiredTriggerClasses();
+
+ if(fAnalysisMC) {
+ // definitions from p-p.cfg
+ ULong64_t spdFO = (1 << 14);
+ ULong64_t v0left = (1 << 11);
+ ULong64_t v0right = (1 << 12);
+
+ switch (trigger) {
+ case kMB1: {
+ if (triggerMask & spdFO || ((triggerMask & v0left) || (triggerMask & v0right)))
+ return kTRUE;
+ break;
+ }
+ case kMB2: {
+ if (triggerMask & spdFO && ((triggerMask & v0left) || (triggerMask & v0right)))
+ return kTRUE;
+ break;
+ }
+ case kSPDFASTOR: {
+ if (triggerMask & spdFO)
+ return kTRUE;
+ break;
+ }
+ }//switch
+ }
+ else {
+ if(kUseOnlineTrigger) {
+ if(firedTriggerClass.Contains("CINT1B-ABCE-NOPF-ALL"))
+ return kTRUE;
+ }
+ else if(!kUseOnlineTrigger)
+ return kTRUE;
+ }
+
+ return kFALSE;
+}
+
+//________________________________________________________________________
+TCanvas *AliProtonAnalysisBase::GetListOfCuts() {
+ // return the list of cuts and their cut values for reference
+ TLatex l;
+ l.SetTextAlign(12);
+ l.SetTextSize(0.04);
+
+ TString listOfCuts;
+
+ TCanvas *c = new TCanvas("cListOfCuts","List of cuts",0,0,900,600);
+ c->SetFillColor(10); c->SetHighLightColor(41);
+ c->Divide(3,2);
+
+ c->cd(1)->SetFillColor(10);
+ l.DrawLatex(0.3,0.9,"Analysis details: List of cuts\n\n");
+
+ listOfCuts = "Analysis level: "; listOfCuts += fProtonAnalysisLevel;
+ l.DrawLatex(0.1,0.82,listOfCuts.Data());
+ listOfCuts = "Analysis mode: ";
+ if(fProtonAnalysisMode == kTPC) listOfCuts += "TPC standalone";
+ if(fProtonAnalysisMode == kHybrid) listOfCuts += "Hybrid TPC";
+ if(fProtonAnalysisMode == kFullHybrid) listOfCuts += "Full Hybrid TPC";
+ if(fProtonAnalysisMode == kGlobal) listOfCuts += "Global tracking";
+ l.DrawLatex(0.1,0.74,listOfCuts.Data());
+ listOfCuts = "Trigger mode: ";
+ if(fTriggerMode == kMB1) listOfCuts += "Minimum bias 1";
+ if(fTriggerMode == kMB2) listOfCuts += "Minimum bias 2";
+ if(fTriggerMode == kSPDFASTOR) listOfCuts += "FastOR (SPD)";
+ l.DrawLatex(0.1,0.66,listOfCuts.Data());
+ listOfCuts = "PID mode: ";
+ if(fProtonPIDMode == kBayesian) listOfCuts += "Bayesian PID";
+ if(fProtonPIDMode == kRatio) {
+ listOfCuts += "Z = ln((dE/dx)_{exp.}/(dE/dx)_{theor.}) > ";
+ listOfCuts += fNRatio;
+ }
+ if(fProtonPIDMode == kSigma) {
+ listOfCuts += "N_{#sigma} area: "; listOfCuts += fNSigma;
+ listOfCuts += " #sigma";
+ }
+ //if(fProtonPIDMode == kSigma2) {
+ //listOfCuts += "N_{#sigma}(2) area: "; listOfCuts += fNSigma;
+ //listOfCuts += " #sigma";
+ //}
+ l.DrawLatex(0.1,0.58,listOfCuts.Data());
+ listOfCuts = "Accepted vertex diamond: ";
+ l.DrawLatex(0.1,0.52,listOfCuts.Data());
+ listOfCuts = "|V_{x}| < "; listOfCuts += fVxMax; listOfCuts += " [cm]";
+ l.DrawLatex(0.6,0.52,listOfCuts.Data());
+ listOfCuts = "|V_{y}| < "; listOfCuts += fVyMax; listOfCuts += " [cm]";
+ l.DrawLatex(0.6,0.45,listOfCuts.Data());
+ listOfCuts = "|V_{z}| < "; listOfCuts += fVzMax; listOfCuts += " [cm]";
+ l.DrawLatex(0.6,0.38,listOfCuts.Data());
+ listOfCuts = "N_{contributors} > "; listOfCuts += fMinNumOfContributors;
+ l.DrawLatex(0.6,0.31,listOfCuts.Data());
+ listOfCuts = "Phase space: ";
+ l.DrawLatex(0.1,0.2,listOfCuts.Data());
+ if(fAnalysisEtaMode) listOfCuts = "|#eta| < ";
+ else listOfCuts = "|y| < ";
+ listOfCuts += TMath::Abs(fMinX);
+ l.DrawLatex(0.35,0.2,listOfCuts.Data());
+ listOfCuts = "N_{bins} = ";
+ listOfCuts += fNBinsX; listOfCuts += " (binning: ";
+ listOfCuts += (fMaxX-fMinX)/fNBinsX; listOfCuts += ")";
+ l.DrawLatex(0.35,0.15,listOfCuts.Data());
+ listOfCuts = ""; listOfCuts += fMinY; listOfCuts += " < P_{T} < ";
+ listOfCuts += fMaxY; listOfCuts += "GeV/c";
+ l.DrawLatex(0.35,0.1,listOfCuts.Data());
+ listOfCuts = "N_{bins} = ";
+ listOfCuts += fNBinsY; listOfCuts += " (binning: ";
+ listOfCuts += (fMaxY-fMinY)/fNBinsY; listOfCuts += ")";
+ l.DrawLatex(0.35,0.05,listOfCuts.Data());
+
+ c->cd(2)->SetFillColor(2);
+ l.DrawLatex(0.3,0.95,"ITS related cuts");
+ listOfCuts = "Request a cluster on either of the SPD layers: ";
+ listOfCuts += fPointOnSPDLayersFlag;
+ l.DrawLatex(0.1,0.9,listOfCuts.Data());
+ listOfCuts = "Request a cluster on either of the SDD layers: ";
+ listOfCuts += fPointOnSDDLayersFlag;
+ l.DrawLatex(0.1,0.83,listOfCuts.Data());
+ listOfCuts = "Request a cluster on either of the SSD layers: ";
+ listOfCuts += fPointOnSSDLayersFlag;
+ l.DrawLatex(0.1,0.76,listOfCuts.Data());
+
+ listOfCuts = "Request a cluster on SPD1: ";
+ listOfCuts += fPointOnITSLayer1Flag;
+ l.DrawLatex(0.1,0.69,listOfCuts.Data());
+ listOfCuts = "Request a cluster on SPD2: ";
+ listOfCuts += fPointOnITSLayer2Flag;
+ l.DrawLatex(0.1,0.62,listOfCuts.Data());
+ listOfCuts = "Request a cluster on SDD1: ";
+ listOfCuts += fPointOnITSLayer3Flag;
+ l.DrawLatex(0.1,0.55,listOfCuts.Data());
+ listOfCuts = "Request a cluster on SDD2: ";
+ listOfCuts += fPointOnITSLayer4Flag;
+ l.DrawLatex(0.1,0.48,listOfCuts.Data());
+ listOfCuts = "Request a cluster on SSD1: ";
+ listOfCuts += fPointOnITSLayer5Flag;
+ l.DrawLatex(0.1,0.41,listOfCuts.Data());
+ listOfCuts = "Request a cluster on SSD2: ";
+ listOfCuts += fPointOnITSLayer6Flag;
+ l.DrawLatex(0.1,0.34,listOfCuts.Data());
+ listOfCuts = "Minimum number of ITS clusters: ";
+ if(fMinITSClustersFlag) listOfCuts += fMinITSClusters;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.27,listOfCuts.Data());
+ listOfCuts = "Maximum #chi^{2} per ITS cluster: ";
+ if(fMaxChi2PerITSClusterFlag) listOfCuts += fMaxChi2PerITSCluster;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.2,listOfCuts.Data());
+
+ c->cd(3)->SetFillColor(3);
+ l.DrawLatex(0.3,0.9,"TPC related cuts");
+ listOfCuts = "Minimum number of TPC clusters: ";
+ if(fMinTPCClustersFlag) listOfCuts += fMinTPCClusters;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.7,listOfCuts.Data());
+ listOfCuts = "Maximum #chi^{2} per TPC cluster: ";
+ if(fMaxChi2PerTPCClusterFlag) listOfCuts += fMaxChi2PerTPCCluster;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.5,listOfCuts.Data());
+ listOfCuts = "Minimum number of TPC points for the dE/dx: ";
+ if(fMinTPCdEdxPointsFlag) listOfCuts += fMinTPCdEdxPoints;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.3,listOfCuts.Data());
+
+ c->cd(4)->SetFillColor(4);
+ l.DrawLatex(0.3,0.9,"Tracking related cuts");
+ listOfCuts = "Maximum cov11: ";
+ if(fMaxCov11Flag) listOfCuts += fMaxCov11;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.75,listOfCuts.Data());
+ listOfCuts = "Maximum cov22: ";
+ if(fMaxCov22Flag) listOfCuts += fMaxCov22;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.6,listOfCuts.Data());
+ listOfCuts = "Maximum cov33: ";
+ if(fMaxCov33Flag) listOfCuts += fMaxCov33;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.45,listOfCuts.Data());
+ listOfCuts = "Maximum cov44: ";
+ if(fMaxCov44Flag) listOfCuts += fMaxCov44;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.3,listOfCuts.Data());
+ listOfCuts = "Maximum cov55: ";
+ if(fMaxCov55Flag) listOfCuts += fMaxCov55;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.15,listOfCuts.Data());
+
+ c->cd(5)->SetFillColor(5);
+ l.DrawLatex(0.3,0.9,"DCA related cuts");
+ listOfCuts = "Maximum sigma to vertex: ";
+ if(fMaxSigmaToVertexFlag) listOfCuts += fMaxSigmaToVertex;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.8,listOfCuts.Data());
+ listOfCuts = "Maximum sigma to vertex (TPC): ";
+ if(fMaxSigmaToVertexTPCFlag) listOfCuts += fMaxSigmaToVertexTPC;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.72,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in xy: ";
+ if(fMaxDCAXYFlag) listOfCuts += fMaxDCAXY;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.64,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in z: ";
+ if(fMaxDCAZFlag) listOfCuts += fMaxDCAZ;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.56,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in 3D: ";
+ if(fMaxDCA3DFlag) listOfCuts += fMaxDCA3D;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.48,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in xy (TPC): ";
+ if(fMaxDCAXYFlag) listOfCuts += fMaxDCAXYTPC;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.4,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in z (TPC): ";
+ if(fMaxDCAZFlag) listOfCuts += fMaxDCAZTPC;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.32,listOfCuts.Data());
+ listOfCuts = "Maximum DCA in 3D (TPC): ";
+ if(fMaxDCA3DFlag) listOfCuts += fMaxDCA3DTPC;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.24,listOfCuts.Data());
+ listOfCuts = "Maximum constrained #chi^{2} (vertex): ";
+ if(fMaxConstrainChi2Flag) listOfCuts += fMaxConstrainChi2;
+ else listOfCuts += "Not used";
+ l.DrawLatex(0.1,0.16,listOfCuts.Data());
+
+ c->cd(6)->SetFillColor(6);
+ l.DrawLatex(0.3,0.9,"Tracking bits related cuts");
+ listOfCuts = "Request the ITS refit bit: "; listOfCuts += fITSRefitFlag;
+ l.DrawLatex(0.1,0.7,listOfCuts.Data());
+ listOfCuts = "Request the TPC refit bit: "; listOfCuts += fTPCRefitFlag;
+ l.DrawLatex(0.1,0.5,listOfCuts.Data());
+ listOfCuts = "Request the TPC pid bit: "; listOfCuts += fTPCpidFlag;
+ l.DrawLatex(0.1,0.3,listOfCuts.Data());
+ listOfCuts = "Request the ESD pid bit: "; listOfCuts += fESDpidFlag;
+ l.DrawLatex(0.1,0.1,listOfCuts.Data());
+
+ return c;
+}
+
+//________________________________________________________________________
+Bool_t AliProtonAnalysisBase::IsProton(AliESDtrack *track) {
+ //Function that checks if a track is a proton
+ Double_t probability[5] = {0.,0.,0.,0.,0.};
+ Double_t gPt = 0.0, gP = 0.0, gEta = 0.0;
+ Long64_t fParticleType = 0;
+
+ //Bayesian approach for the PID
+ if(fProtonPIDMode == kBayesian) {
+ if((fProtonAnalysisMode == kTPC)||(fProtonAnalysisMode == kHybrid)||(fProtonAnalysisMode == kFullHybrid)) {
+ AliExternalTrackParam *tpcTrack = (AliExternalTrackParam *)track->GetTPCInnerParam();
+ if(tpcTrack) {
+ gPt = tpcTrack->Pt();
+ gP = tpcTrack->P();
+ track->GetTPCpid(probability);
+ }
+ else return 0;
+ }//TPC standalone or Hybrid TPC
+ else if(fProtonAnalysisMode == kGlobal) {
+ gPt = track->Pt();
+ gP = track->P();
+ track->GetESDpid(probability);
+ }//Global tracking
+
+ Double_t rcc = 0.0;
+ for(Int_t i = 0; i < AliPID::kSPECIES; i++)
+ rcc += probability[i]*GetParticleFraction(i,gP);
+ if(rcc != 0.0) {
+ Double_t w[5];
+ for(Int_t i = 0; i < AliPID::kSPECIES; i++)
+ w[i] = probability[i]*GetParticleFraction(i,gP)/rcc;
+ fParticleType = TMath::LocMax(AliPID::kSPECIES,w);
+ }
+ if(fParticleType == 4)
+ return kTRUE;
+ }//Bayesian pid
+ //Ratio of the measured over the theoretical dE/dx a la STAR
+ else if(fProtonPIDMode == kRatio) {
+ AliExternalTrackParam *tpcTrack = (AliExternalTrackParam *)track->GetTPCInnerParam();
+ if(tpcTrack) {
+ gPt = tpcTrack->Pt();
+ gP = track->GetInnerParam()->P();
+ gEta = tpcTrack->Eta();
+ }
+ Double_t fAlephParameters[5] = {0.,0.,0.,0.,0.};
+ if(fAnalysisMC) {
+ fAlephParameters[0] = 2.15898e+00/50.;
+ fAlephParameters[1] = 1.75295e+01;
+ fAlephParameters[2] = 3.40030e-09;
+ fAlephParameters[3] = 1.96178e+00;
+ fAlephParameters[4] = 3.91720e+00;
+ }
+ else {
+ fAlephParameters[0] = 0.0283086;
+ fAlephParameters[1] = 2.63394e+01;
+ fAlephParameters[2] = 5.04114e-11;
+ fAlephParameters[3] = 2.12543e+00;
+ fAlephParameters[4] = 4.88663e+00;
+ }
+
+ AliTPCPIDResponse *tpcResponse = new AliTPCPIDResponse();
+ tpcResponse->SetBetheBlochParameters(fAlephParameters[0],fAlephParameters[1],fAlephParameters[2],fAlephParameters[3],fAlephParameters[4]);
+
+ Double_t normalizeddEdx = -10.;
+ if((track->GetTPCsignal() > 0.0) && (tpcResponse->GetExpectedSignal(gP,AliPID::kProton) > 0.0))
+ normalizeddEdx = TMath::Log(track->GetTPCsignal()/tpcResponse->GetExpectedSignal(gP,AliPID::kProton));
+
+ delete tpcResponse;
+
+ if(normalizeddEdx >= fNRatio)
+ return kTRUE;
+ }//kRatio PID mode
+ //Definition of an N-sigma area around the dE/dx vs P band
+ else if(fProtonPIDMode == kSigma) {
+ Double_t fAlephParameters[5];
+ if(fAnalysisMC) {
+ fAlephParameters[0] = 2.15898e+00/50.;
+ fAlephParameters[1] = 1.75295e+01;
+ fAlephParameters[2] = 3.40030e-09;
+ fAlephParameters[3] = 1.96178e+00;
+ fAlephParameters[4] = 3.91720e+00;
+ }
+ else {
+ fAlephParameters[0] = 0.0283086;
+ fAlephParameters[1] = 2.63394e+01;
+ fAlephParameters[2] = 5.04114e-11;
+ fAlephParameters[3] = 2.12543e+00;
+ fAlephParameters[4] = 4.88663e+00;
+ }
+
+ Double_t nsigma = 100.0;
+ AliTPCPIDResponse *tpcResponse = new AliTPCPIDResponse();
+ tpcResponse->SetBetheBlochParameters(fAlephParameters[0],fAlephParameters[1],fAlephParameters[2],fAlephParameters[3],fAlephParameters[4]);
+
+ Double_t mom = track->GetP();
+ const AliExternalTrackParam *in = track->GetInnerParam();
+ if (in)
+ mom = in->GetP();
+
+ nsigma = TMath::Abs(tpcResponse->GetNumberOfSigmas(mom,track->GetTPCsignal(),track->GetTPCsignalN(),AliPID::kProton));
+
+ delete tpcResponse;
+ if(nsigma <= fNSigma)
+ return kTRUE;
+ }//kSigma PID method
+
+ return kFALSE;
+}
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff