//________________________________________________________________________
AliAnalysisTaskPID::AliAnalysisTaskPID()
: AliAnalysisTaskPIDV0base()
+ , fRun(-1)
, fPIDcombined(new AliPIDCombined())
, fInputFromOtherTask(kFALSE)
, fDoPID(kTRUE)
, fDoEfficiency(kTRUE)
, fDoPtResolution(kTRUE)
+ , fDoDeDxCheck(kTRUE)
, fStoreCentralityPercentile(kFALSE)
, fStoreAdditionalJetInformation(kFALSE)
, fTakeIntoAccountMuons(kFALSE)
, fEtaAbsCutLow(0.0)
, fEtaAbsCutUp(0.9)
, fDoAnySystematicStudiesOnTheExpectedSignal(kFALSE)
- , fSystematicScalingSplines(1.0)
+ , fSystematicScalingSplinesThreshold(50.)
+ , fSystematicScalingSplinesBelowThreshold(1.0)
+ , fSystematicScalingSplinesAboveThreshold(1.0)
, fSystematicScalingEtaCorrectionMomentumThr(0.35)
, fSystematicScalingEtaCorrectionLowMomenta(1.0)
, fSystematicScalingEtaCorrectionHighMomenta(1.0)
- , fSystematicScalingEtaSigmaPara(1.0)
+ , fSystematicScalingEtaSigmaParaThreshold(250.)
+ , fSystematicScalingEtaSigmaParaBelowThreshold(1.0)
+ , fSystematicScalingEtaSigmaParaAboveThreshold(1.0)
, fSystematicScalingMultCorrection(1.0)
, fCentralityEstimator("V0M")
, fhPIDdataAll(0x0)
, fGenRespPrDeltaPi(new Double_t[fgkMaxNumGenEntries])
, fGenRespPrDeltaPr(new Double_t[fgkMaxNumGenEntries])
*/
+ , fDeltaPrimeAxis(0x0)
+ , fhMaxEtaVariation(0x0)
, fhEventsProcessed(0x0)
+ , fhEventsTriggerSel(0x0)
+ , fhEventsTriggerSelVtxCut(0x0)
, fhSkippedTracksForSignalGeneration(0x0)
, fhMCgeneratedYieldsPrimaries(0x0)
, fh2FFJetPtRec(0x0)
, fh1Xsec(0x0)
, fh1Trials(0x0)
, fContainerEff(0x0)
+ , fDeDxCheck(0x0)
, fOutputContainer(0x0)
- , fPtResolutionContainer(0x0)
+ , fQAContainer(0x0)
{
// default Constructor
//________________________________________________________________________
AliAnalysisTaskPID::AliAnalysisTaskPID(const char *name)
: AliAnalysisTaskPIDV0base(name)
+ , fRun(-1)
, fPIDcombined(new AliPIDCombined())
, fInputFromOtherTask(kFALSE)
, fDoPID(kTRUE)
, fDoEfficiency(kTRUE)
, fDoPtResolution(kTRUE)
+ , fDoDeDxCheck(kTRUE)
, fStoreCentralityPercentile(kFALSE)
, fStoreAdditionalJetInformation(kFALSE)
, fTakeIntoAccountMuons(kFALSE)
, fEtaAbsCutLow(0.0)
, fEtaAbsCutUp(0.9)
, fDoAnySystematicStudiesOnTheExpectedSignal(kFALSE)
- , fSystematicScalingSplines(1.0)
+ , fSystematicScalingSplinesThreshold(50.)
+ , fSystematicScalingSplinesBelowThreshold(1.0)
+ , fSystematicScalingSplinesAboveThreshold(1.0)
, fSystematicScalingEtaCorrectionMomentumThr(0.35)
, fSystematicScalingEtaCorrectionLowMomenta(1.0)
, fSystematicScalingEtaCorrectionHighMomenta(1.0)
- , fSystematicScalingEtaSigmaPara(1.0)
+ , fSystematicScalingEtaSigmaParaThreshold(250.)
+ , fSystematicScalingEtaSigmaParaBelowThreshold(1.0)
+ , fSystematicScalingEtaSigmaParaAboveThreshold(1.0)
, fSystematicScalingMultCorrection(1.0)
, fCentralityEstimator("V0M")
, fhPIDdataAll(0x0)
, fGenRespPrDeltaPi(new Double_t[fgkMaxNumGenEntries])
, fGenRespPrDeltaPr(new Double_t[fgkMaxNumGenEntries])
*/
+ , fDeltaPrimeAxis(0x0)
+ , fhMaxEtaVariation(0x0)
, fhEventsProcessed(0x0)
+ , fhEventsTriggerSel(0x0)
+ , fhEventsTriggerSelVtxCut(0x0)
, fhSkippedTracksForSignalGeneration(0x0)
, fhMCgeneratedYieldsPrimaries(0x0)
, fh2FFJetPtRec(0x0)
, fh1Xsec(0x0)
, fh1Trials(0x0)
, fContainerEff(0x0)
+ , fDeDxCheck(0x0)
, fOutputContainer(0x0)
- , fPtResolutionContainer(0x0)
+ , fQAContainer(0x0)
{
// Constructor
delete fOutputContainer;
fOutputContainer = 0x0;
- delete fPtResolutionContainer;
- fPtResolutionContainer = 0x0;
+ delete fQAContainer;
+ fQAContainer = 0x0;
delete fConvolutedGausDeltaPrime;
fConvolutedGausDeltaPrime = 0x0;
+ delete fDeltaPrimeAxis;
+ fDeltaPrimeAxis = 0x0;
+
delete [] fGenRespElDeltaPrimeEl;
delete [] fGenRespElDeltaPrimeKa;
delete [] fGenRespElDeltaPrimePi;
fGenRespPrDeltaPrimePi = 0x0;
fGenRespPrDeltaPrimePr = 0x0;
+ delete fhMaxEtaVariation;
+ fhMaxEtaVariation = 0x0;
+
/*OLD with deltaSpecies
delete [] fGenRespElDeltaEl;
delete [] fGenRespElDeltaKa;
{
// Initialise the PIDcombined object
- if (!fDoPID)
+ if (!fDoPID && !fDoDeDxCheck)
return;
if(fDebug > 1)
}
+//________________________________________________________________________
+Bool_t AliAnalysisTaskPID::CalculateMaxEtaVariationMapFromPIDResponse()
+{
+ // Calculate the maximum deviation from unity of the eta correction factors for each row in 1/dEdx(splines)
+ // from the eta correction map of the TPCPIDResponse. The result is stored in fhMaxEtaVariation.
+
+ if (!fPIDResponse) {
+ AliError("No PID response!");
+ return kFALSE;
+ }
+
+ delete fhMaxEtaVariation;
+
+ const TH2D* hEta = fPIDResponse->GetTPCResponse().GetEtaCorrMap();
+ if (!hEta) {
+ AliError("No eta correction map!");
+ return kFALSE;
+ }
+
+ // Take binning from hEta in Y for fhMaxEtaVariation
+ fhMaxEtaVariation = hEta->ProjectionY("hMaxEtaVariation");
+ fhMaxEtaVariation->SetDirectory(0);
+ fhMaxEtaVariation->Reset();
+
+ // For each bin in 1/dEdx, loop of all tanTheta bins and find the maximum deviation from unity.
+ // Store the result in fhMaxEtaVariation
+
+ for (Int_t binY = 1; binY <= fhMaxEtaVariation->GetNbinsX(); binY++) {
+ Double_t maxAbs = -1;
+ for (Int_t binX = 1; binX <= hEta->GetNbinsX(); binX++) {
+ Double_t curr = TMath::Abs(hEta->GetBinContent(binX, binY) - 1.);
+ if (curr > maxAbs)
+ maxAbs = curr;
+ }
+
+ if (maxAbs < 1e-12) {
+ AliError(Form("Maximum deviation from unity is zero for 1/dEdx = %f (bin %d)", hEta->GetYaxis()->GetBinCenter(binY), binY));
+ delete fhMaxEtaVariation;
+ return kFALSE;
+ }
+
+ fhMaxEtaVariation->SetBinContent(binY, maxAbs);
+ }
+
+ printf("AliAnalysisTaskPID: Calculated max eta variation.\n");
+
+ return kTRUE;
+}
+
+
//________________________________________________________________________
void AliAnalysisTaskPID::UserCreateOutputObjects()
{
deltaPrimeBins[i] = factor * deltaPrimeBins[i - 1];
}
+ fDeltaPrimeAxis = new TAxis(deltaPrimeNBins, deltaPrimeBins);
+
const Int_t nMCPIDbins = 5;
const Double_t mcPIDmin = 0.;
const Double_t mcPIDmax = 5.;
SetUpGenHist(fhGenPr, binsPt, deltaPrimeBins, binsCent, binsJetPt);
fOutputContainer->Add(fhGenPr);
-
- fhEventsProcessed = new TH1D("fhEventsProcessed","Number of processed events;Centrality percentile", nCentBins,
- binsCent);
- fhEventsProcessed->Sumw2();
- fOutputContainer->Add(fhEventsProcessed);
-
fhSkippedTracksForSignalGeneration = new TH2D("fhSkippedTracksForSignalGeneration",
- "Number of tracks skipped for the signal generation;P_{T}^{gen} (GeV/c);TPC signal N",
+ "Number of tracks skipped for the signal generation;p_{T}^{gen} (GeV/c);TPC signal N",
nPtBins, binsPt, 161, -0.5, 160.5);
fhSkippedTracksForSignalGeneration->Sumw2();
fOutputContainer->Add(fhSkippedTracksForSignalGeneration);
}
+ fhEventsProcessed = new TH1D("fhEventsProcessed",
+ "Number of events passing trigger selection, vtx and zvtx cuts;Centrality percentile",
+ nCentBins, binsCent);
+ fhEventsProcessed->Sumw2();
+ fOutputContainer->Add(fhEventsProcessed);
+
+ fhEventsTriggerSelVtxCut = new TH1D("fhEventsTriggerSelVtxCut",
+ "Number of events passing trigger selection and vtx cut;Centrality percentile",
+ nCentBins, binsCent);
+ fhEventsTriggerSelVtxCut->Sumw2();
+ fOutputContainer->Add(fhEventsTriggerSelVtxCut);
+
+ fhEventsTriggerSel = new TH1D("fhEventsTriggerSel",
+ "Number of events passing trigger selection;Centrality percentile",
+ nCentBins, binsCent);
+ fOutputContainer->Add(fhEventsTriggerSel);
+ fhEventsTriggerSel->Sumw2();
+
+
// Generated yields within acceptance
const Int_t nBinsGenYields = fStoreAdditionalJetInformation ? kGenYieldNumAxes : kGenYieldNumAxes - 3;
Int_t genYieldsBins[kGenYieldNumAxes] = { nMCPIDbins, nPtBins, nCentBins, nJetPtBins, nZBins, nXiBins,
}
fContainerEff->SetVarTitle(kEffMCID,"MC ID");
- fContainerEff->SetVarTitle(kEffTrackPt,"P_{T} (GeV/c)");
+ fContainerEff->SetVarTitle(kEffTrackPt,"p_{T} (GeV/c)");
fContainerEff->SetVarTitle(kEffTrackEta,"#eta");
fContainerEff->SetVarTitle(kEffTrackCharge,"Charge (e_{0})");
fContainerEff->SetVarTitle(kEffCentrality, "Centrality Percentile");
if (fStoreAdditionalJetInformation) {
- fContainerEff->SetVarTitle(kEffJetPt, "P_{T}^{jet} (GeV/c)");
- fContainerEff->SetVarTitle(kEffZ, "z = P_{T}^{track} / P_{T}^{jet}");
- fContainerEff->SetVarTitle(kEffXi, "#xi = ln(P_{T}^{jet} / P_{T}^{track})");
+ fContainerEff->SetVarTitle(kEffJetPt, "p_{T}^{jet} (GeV/c)");
+ fContainerEff->SetVarTitle(kEffZ, "z = p_{T}^{track} / p_{T}^{jet}");
+ fContainerEff->SetVarTitle(kEffXi, "#xi = ln(p_{T}^{jet} / p_{T}^{track})");
}
// Define clean MC sample
if (fDoPID || fDoEfficiency) {
// Generated jets
- fh2FFJetPtRec = new TH2D("fh2FFJetPtRec", "Number of reconstructed jets;Centrality Percentile;P_{T}^{jet} (GeV/c)",
+ fh2FFJetPtRec = new TH2D("fh2FFJetPtRec", "Number of reconstructed jets;Centrality Percentile;p_{T}^{jet} (GeV/c)",
nCentBins, binsCent, nJetPtBins, binsJetPt);
fh2FFJetPtRec->Sumw2();
fOutputContainer->Add(fh2FFJetPtRec);
- fh2FFJetPtGen = new TH2D("fh2FFJetPtGen", "Number of generated jets;Centrality Percentile;P_{T}^{jet} (GeV/c)",
+ fh2FFJetPtGen = new TH2D("fh2FFJetPtGen", "Number of generated jets;Centrality Percentile;p_{T}^{jet} (GeV/c)",
nCentBins, binsCent, nJetPtBins, binsJetPt);
fh2FFJetPtGen->Sumw2();
fOutputContainer->Add(fh2FFJetPtGen);
fOutputContainer->Add(fh1Xsec);
fOutputContainer->Add(fh1Trials);
- if (fDoPtResolution) {
+ if (fDoDeDxCheck || fDoPtResolution) {
OpenFile(3);
+ fQAContainer = new TObjArray(1);
+ fQAContainer->SetName(Form("%s_QA", GetName()));
+ fQAContainer->SetOwner(kTRUE);
if(fDebug > 2)
- printf("File: %s, Line: %d: UserCreateOutputObjects -> OpenFile(3) successful\n", (char*)__FILE__, __LINE__);
-
- fPtResolutionContainer = new TObjArray(1);
- fPtResolutionContainer->SetName(Form("%s_PtResolution", GetName()));
- fPtResolutionContainer->SetOwner(kTRUE);
-
+ printf("File: %s, Line: %d: UserCreateOutputObjects -> OpenFile(3) successful\n", (char*)__FILE__, __LINE__);
+ }
+
+ if (fDoPtResolution) {
const Int_t nPtBinsRes = 100;
Double_t pTbinsRes[nPtBinsRes + 1];
Form("Pt resolution for primaries, %s", AliPID::ParticleLatexName(i)),
nBinsPtResolution, ptResolutionBins, ptResolutionXmin, ptResolutionXmax);
SetUpPtResHist(fPtResolution[i], pTbinsRes, binsJetPt, binsCent);
- fPtResolutionContainer->Add(fPtResolution[i]);
+ fQAContainer->Add(fPtResolution[i]);
}
}
+
+
+ if (fDoDeDxCheck) {
+ const Int_t nEtaAbsBins = 9;
+ const Double_t binsEtaAbs[nEtaAbsBins+1] = { 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 };
+
+ const Double_t dEdxMin = 20;
+ const Double_t dEdxMax = 110;
+ const Int_t nDeDxBins = (Int_t) ((dEdxMax - dEdxMin) / 0.02);
+ const Int_t nBinsDeDxCheck= kDeDxCheckNumAxes;
+ Int_t dEdxCheckBins[kDeDxCheckNumAxes] = { nSelSpeciesBins, nPtBins, nJetPtBins, nEtaAbsBins, nDeDxBins };
+ Double_t dEdxCheckXmin[kDeDxCheckNumAxes] = { selSpeciesMin, binsPt[0], binsJetPt[0], binsEtaAbs[0], dEdxMin };
+ Double_t dEdxCheckXmax[kDeDxCheckNumAxes] = { selSpeciesMax, binsPt[nPtBins], binsJetPt[nJetPtBins], binsEtaAbs[nEtaAbsBins], dEdxMax };
+
+ fDeDxCheck = new THnSparseD("fDeDxCheck", "dEdx check", nBinsDeDxCheck, dEdxCheckBins, dEdxCheckXmin, dEdxCheckXmax);
+ SetUpDeDxCheckHist(fDeDxCheck, binsPt, binsJetPt, binsEtaAbs);
+ fQAContainer->Add(fDeDxCheck);
+ }
+
if(fDebug > 2)
printf("File: %s, Line: %d: UserCreateOutputObjects -> Posting output data\n", (char*)__FILE__, __LINE__);
PostData(1, fOutputContainer);
PostData(2, fContainerEff);
- PostData(3, fPtResolutionContainer);
+ PostData(3, fQAContainer);
if(fDebug > 2)
printf("File: %s, Line: %d: UserCreateOutputObjects -> Done\n", (char*)__FILE__, __LINE__);
if(fDebug > 1)
printf("File: %s, Line: %d: UserExec\n", (char*)__FILE__, __LINE__);
+ Int_t run = InputEvent()->GetRunNumber();
+
+ if (run != fRun){
+ // If systematics on eta is investigated, need to calculate the maxEtaVariationMap
+ if ((TMath::Abs(fSystematicScalingEtaCorrectionLowMomenta - 1.0) > fgkEpsilon) ||
+ (TMath::Abs(fSystematicScalingEtaCorrectionHighMomenta - 1.0) > fgkEpsilon)) {
+ if (!CalculateMaxEtaVariationMapFromPIDResponse())
+ AliFatal("Systematics on eta correction requested, but failed to calculate max eta varation map!");
+ }
+ }
+
+ fRun = run;
+
// No processing of event, if input is fed in directly from another task
if (fInputFromOtherTask)
return;
if (!fPIDResponse || !fPIDcombined)
return;
- if (!GetVertexIsOk(fEvent))
+ Double_t centralityPercentile = -1;
+ if (fStoreCentralityPercentile)
+ centralityPercentile = fEvent->GetCentrality()->GetCentralityPercentile(fCentralityEstimator.Data());
+
+ IncrementEventCounter(centralityPercentile, kTriggerSel);
+
+ // Check if vertex is ok, but don't apply cut on z position
+ if (!GetVertexIsOk(fEvent, kFALSE))
return;
fESD = dynamic_cast<AliESDEvent*>(fEvent);
if(primaryVertex->GetNContributors() <= 0)
return;
- Double_t magField = fEvent->GetMagneticField();
+ IncrementEventCounter(centralityPercentile, kTriggerSelAndVtxCut);
- //OLD with DeltaSpecies const Bool_t usePureGausForDelta = kTRUE;
+ // Now check again, but also require z position to be in desired range
+ if (!GetVertexIsOk(fEvent, kTRUE))
+ return;
-
- Double_t centralityPercentile = -1;
- if (fStoreCentralityPercentile)
- centralityPercentile = fEvent->GetCentrality()->GetCentralityPercentile(fCentralityEstimator.Data());
+ IncrementEventCounter(centralityPercentile, kTriggerSelAndVtxCutAndZvtxCut);
+
+ Double_t magField = fEvent->GetMagneticField();
if (fMC) {
if (fDoPID || fDoEfficiency) {
continue;
if (fDoPID) {
- Double_t valuesGenYield[kGenYieldNumAxes] = { mcID, mcPart->Pt(), centralityPercentile, -1, -1, -1, -1 };
+ Double_t valuesGenYield[kGenYieldNumAxes] = { static_cast<Double_t>(mcID), mcPart->Pt(), centralityPercentile, -1, -1, -1, -1 };
valuesGenYield[GetIndexOfChargeAxisGenYield()] = chargeMC;
fhMCgeneratedYieldsPrimaries->Fill(valuesGenYield);
if (fDoEfficiency) {
- Double_t valueEff[kEffNumAxes] = { mcID, mcPart->Pt(), mcPart->Eta(), chargeMC, centralityPercentile,
+ Double_t valueEff[kEffNumAxes] = { static_cast<Double_t>(mcID), mcPart->Pt(), mcPart->Eta(), chargeMC, centralityPercentile,
-1, -1, -1 };
fContainerEff->Fill(valueEff, kStepGenWithGenCuts);
// Apply detector level track cuts
- Double_t dEdxTPC = fPIDResponse->IsTunedOnData() ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
+ const Bool_t tuneOnDataTPC = fPIDResponse->IsTunedOnData() &&
+ ((fPIDResponse->GetTunedOnDataMask() & AliPIDResponse::kDetTPC) == AliPIDResponse::kDetTPC);
+ Double_t dEdxTPC = tuneOnDataTPC ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
if (dEdxTPC <= 0)
continue;
IsInAcceptedEtaRange(TMath::Abs(mcTrack->Eta()))) {
// AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
- Double_t value[kEffNumAxes] = { mcID, mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3., centralityPercentile,
+ Double_t value[kEffNumAxes] = { static_cast<Double_t>(mcID), mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3., centralityPercentile,
-1, -1, -1 };
fContainerEff->Fill(value, kStepRecWithGenCuts);
- Double_t valueMeas[kEffNumAxes] = { mcID, track->Pt(), track->Eta(), track->Charge(), centralityPercentile,
+ Double_t valueMeas[kEffNumAxes] = { static_cast<Double_t>(mcID), track->Pt(), track->Eta(), static_cast<Double_t>(track->Charge()), centralityPercentile,
-1, -1, -1 };
fContainerEff->Fill(valueMeas, kStepRecWithGenCutsMeasuredObs);
}
// Only process tracks inside the desired eta window
if (!IsInAcceptedEtaRange(TMath::Abs(track->Eta()))) continue;
- if (fDoPID)
+ if (fDoPID || fDoDeDxCheck)
ProcessTrack(track, pdg, centralityPercentile, -1); // No jet information in this case -> Set jet pT to -1
if (fDoPtResolution) {
if (mcTrack && fMC->IsPhysicalPrimary(TMath::Abs(label))) {
// AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
Double_t valuePtRes[kPtResNumAxes] = { -1, mcTrack->Pt(), track->Pt(), mcTrack->Charge() / 3., centralityPercentile };
- fPtResolution[mcID]->Fill(valuePtRes);
+ FillPtResolution(mcID, valuePtRes);
}
}
if (fDoEfficiency) {
if (mcTrack) {
- Double_t valueRecAllCuts[kEffNumAxes] = { mcID, track->Pt(), track->Eta(), track->Charge(), centralityPercentile,
+ Double_t valueRecAllCuts[kEffNumAxes] = { static_cast<Double_t>(mcID), track->Pt(), track->Eta(), static_cast<Double_t>(track->Charge()), centralityPercentile,
-1, -1, -1 };
fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObs);
fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObsStrangenessScaled, weight);
// AliMCParticle->Charge() calls TParticlePDG->Charge(), which returns the charge in units of e0 / 3
- Double_t valueGenAllCuts[kEffNumAxes] = { mcID, mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3.,
+ Double_t valueGenAllCuts[kEffNumAxes] = { static_cast<Double_t>(mcID), mcTrack->Pt(), mcTrack->Eta(), mcTrack->Charge() / 3.,
centralityPercentile, -1, -1, -1 };
if (fMC->IsPhysicalPrimary(TMath::Abs(label))) {
fContainerEff->Fill(valueRecAllCuts, kStepRecWithRecCutsMeasuredObsPrimaries);
}
} //track loop
- IncrementEventsProcessed(centralityPercentile);
-
if(fDebug > 2)
printf("File: %s, Line: %d: UserExec -> Processing done\n", (char*)__FILE__, __LINE__);
fDoAnySystematicStudiesOnTheExpectedSignal = kFALSE;
- if (TMath::Abs(fSystematicScalingSplines - 1.0) > fgkEpsilon) {
+
+ if ((TMath::Abs(fSystematicScalingSplinesBelowThreshold - 1.0) > fgkEpsilon) ||
+ (TMath::Abs(fSystematicScalingSplinesAboveThreshold - 1.0) > fgkEpsilon)) {
fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
return;
}
return;
}
- if (TMath::Abs(fSystematicScalingEtaSigmaPara - 1.0) > fgkEpsilon) {
+ if ((TMath::Abs(fSystematicScalingEtaSigmaParaBelowThreshold - 1.0) > fgkEpsilon) ||
+ (TMath::Abs(fSystematicScalingEtaSigmaParaAboveThreshold - 1.0) > fgkEpsilon)) {
fDoAnySystematicStudiesOnTheExpectedSignal = kTRUE;
return;
}
else {
Double_t x0 = 0., x1 = 0., y0 = 0., y1 = 0.;
Double_t y0errStat = 0., y1errStat = 0., y0errSys = 0., y1errSys = 0.;
- Int_t trackPtBin = xAxis->FindBin(trackPt);
+ Int_t trackPtBin = xAxis->FindFixBin(trackPt);
// Linear interpolation between nearest neighbours in trackPt
if (trackPt <= xAxis->GetBinCenter(trackPtBin)) {
return kNoTOFinfo;
Double_t nsigma[kNumTOFspecies + 1] = { -999., -999., -999., -999. };
- const Int_t kTOFelectron = kTOFproton + 1;
nsigma[kTOFpion] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kPion);
nsigma[kTOFkaon] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kKaon);
nsigma[kTOFproton] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kProton);
- nsigma[kTOFelectron] = fPIDResponse->NumberOfSigmasTOF(track, AliPID::kElectron);
Double_t inclusion = -999;
Double_t exclusion = -999;
if (tofMode == 0) {
- inclusion = 2;
- exclusion = 2;
+ inclusion = 3.;
+ exclusion = 2.5;
}
- else if (tofMode == 1) {
- inclusion = 2;
- exclusion = 3;
+ else if (tofMode == 1) { // default
+ inclusion = 3.;
+ exclusion = 3.;
}
else if (tofMode == 2) {
- inclusion = 3;
- exclusion = 3;
+ inclusion = 3.;
+ exclusion = 3.5;
}
else {
Printf("ERROR: Bad TOF mode: %d!", tofMode);
return kNoTOFinfo;
}
- // Smaller exclusion cut for electron band in order not to sacrifise too much TOF pions,
- // but still have a reasonably small electron contamination
- Double_t exclusionForEl = exclusion / 2.;
-
- // Exclusion cut on electrons for pions because the precision of pions is good and
- // the contamination of electron can not be ignored (although effect on pions is small
- // due to overall small electron fraction, the contamination would completely bias the
- // electron fraction).
- // The electron exclsuion cut is also applied to kaons and protons for consistency, but
- // there should be no effect. This is because there is already the exclusion cut on pions
- // and pions and electrons completely overlap in the region, where electrons and pions
- // fall inside the inclusion cut of kaons/protons.
- if (TMath::Abs(nsigma[kTOFpion]) < inclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion
- && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
+ // Do not cut on nSigma electron because this would also remove pions in a large pT range.
+ // The electron contamination of the pion sample can be treated by TPC dEdx fits afterwards.
+ if (TMath::Abs(nsigma[kTOFpion]) < inclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion)
return kTOFpion;
- if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) < inclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion
- && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
+ if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) < inclusion && TMath::Abs(nsigma[kTOFproton]) > exclusion)
return kTOFkaon;
- if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) < inclusion
- && TMath::Abs(nsigma[kTOFelectron]) > exclusionForEl)
+ if (TMath::Abs(nsigma[kTOFpion]) > exclusion && TMath::Abs(nsigma[kTOFkaon]) > exclusion && TMath::Abs(nsigma[kTOFproton]) < inclusion)
return kTOFproton;
// There are no TOF electrons selected because the purity is rather bad, even for small momenta
}
+//_____________________________________________________________________________
+Double_t AliAnalysisTaskPID::GetMaxEtaVariation(Double_t dEdxSplines)
+{
+ // Returns the maximum eta variation (i.e. deviation of eta correction factor from unity) for the
+ // given (spline) dEdx
+
+ if (dEdxSplines < 1. || !fhMaxEtaVariation) {
+ Printf("Error GetMaxEtaVariation: No map or invalid dEdxSplines (%f)!", dEdxSplines);
+ return 999.;
+ }
+
+ Int_t bin = fhMaxEtaVariation->GetXaxis()->FindFixBin(1. / dEdxSplines);
+
+ if (bin == 0)
+ bin = 1;
+ if (bin > fhMaxEtaVariation->GetXaxis()->GetNbins())
+ bin = fhMaxEtaVariation->GetXaxis()->GetNbins();
+
+ return fhMaxEtaVariation->GetBinContent(bin);
+}
+
+
//_____________________________________________________________________________
Int_t AliAnalysisTaskPID::GetRandomParticleTypeAccordingToParticleFractions(Double_t trackPt, Double_t jetPt,
Double_t centralityPercentile,
printf("Do PID: %d\n", fDoPID);
printf("Do Efficiency: %d\n", fDoEfficiency);
printf("Do PtResolution: %d\n", fDoPtResolution);
+ printf("Do dEdxCheck: %d\n", fDoDeDxCheck);
printf("\n");
// Print current settings for systematic studies.
printf("\n\nSettings for systematics for task %s:\n", GetName());
- printf("Splines:\t%f\n", GetSystematicScalingSplines());
+ printf("SplinesThr:\t%f\n", GetSystematicScalingSplinesThreshold());
+ printf("SplinesBelowThr:\t%f\n", GetSystematicScalingSplinesBelowThreshold());
+ printf("SplinesAboveThr:\t%f\n", GetSystematicScalingSplinesAboveThreshold());
printf("EtaCorrMomThr:\t%f\n", GetSystematicScalingEtaCorrectionMomentumThr());
printf("EtaCorrLowP:\t%f\n", GetSystematicScalingEtaCorrectionLowMomenta());
printf("EtaCorrHighP:\t%f\n", GetSystematicScalingEtaCorrectionHighMomenta());
- printf("SigmaPara:\t%f\n", GetSystematicScalingEtaSigmaPara());
+ printf("SigmaParaThr:\t%f\n", GetSystematicScalingEtaSigmaParaThreshold());
+ printf("SigmaParaBelowThr:\t%f\n", GetSystematicScalingEtaSigmaParaBelowThreshold());
+ printf("SigmaParaAboveThr:\t%f\n", GetSystematicScalingEtaSigmaParaAboveThreshold());
printf("MultCorr:\t%f\n", GetSystematicScalingMultCorrection());
printf("TOF mode: %d\n", GetTOFmode());
if(fDebug > 1)
printf("File: %s, Line: %d: ProcessTrack\n", (char*)__FILE__, __LINE__);
- if (!fDoPID)
+ if (!fDoPID && !fDoDeDxCheck)
return kFALSE;
if(fDebug > 2)
// Momenta
//Double_t p = track->GetP();
- //Double_t pTPC = track->GetTPCmomentum();
+ const Double_t pTPC = track->GetTPCmomentum();
Double_t pT = track->Pt();
Double_t z = -1, xi = -1;
Double_t trackCharge = track->Charge();
// TPC signal
- Double_t dEdxTPC = fPIDResponse->IsTunedOnData() ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
+ const Bool_t tuneOnDataTPC = fPIDResponse->IsTunedOnData() &&
+ ((fPIDResponse->GetTunedOnDataMask() & AliPIDResponse::kDetTPC) == AliPIDResponse::kDetTPC);
+ Double_t dEdxTPC = tuneOnDataTPC ? fPIDResponse->GetTPCsignalTunedOnData(track) : track->GetTPCsignal();
if (dEdxTPC <= 0) {
- Printf("Skipping track with strange dEdx value: dEdx %f, pTPC %f, eta %f, ncl %d\n", track->GetTPCsignal(), track->GetTPCmomentum(),
+ Printf("Skipping track with strange dEdx value: dEdx %f, pTPC %f, eta %f, ncl %d\n", track->GetTPCsignal(), pTPC,
track->Eta(), track->GetTPCsignalN());
return kFALSE;
}
+ // Completely remove tracks from light nuclei defined by el and pr <dEdx> as function of pT.
+ // A very loose cut to be sure not to throw away electrons and/or protons
+ Double_t nSigmaPr = fPIDResponse->NumberOfSigmasTPC(track, AliPID::kProton);
+ Double_t nSigmaEl = fPIDResponse->NumberOfSigmasTPC(track, AliPID::kElectron);
+ if ((pTPC >= 0.3 && (nSigmaPr > 10 && nSigmaEl > 10)) ||
+ (pTPC < 0.3 && (nSigmaPr > 15 && nSigmaEl > 15))) {
+ Printf("Skipping track which seems to be a light nuclei: dEdx %f, pTPC %f, pT %f, eta %f, ncl %d, nSigmaPr %f, nSigmaEl %f\n",
+ track->GetTPCsignal(), pTPC, pT, track->Eta(), track->GetTPCsignalN(), nSigmaPr, nSigmaEl);
+ return kFALSE;
+ }
Double_t dEdxEl, dEdxKa, dEdxPi, dEdxMu, dEdxPr;
dEdxPr = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault, kFALSE, kFALSE);
// Scale splines, if desired
- if (TMath::Abs(fSystematicScalingSplines - 1.0) > fgkEpsilon) {
- dEdxEl *= fSystematicScalingSplines;
- dEdxKa *= fSystematicScalingSplines;
- dEdxPi *= fSystematicScalingSplines;
- dEdxMu *= fTakeIntoAccountMuons ? fSystematicScalingSplines : 1.;
- dEdxPr *= fSystematicScalingSplines;
+ if ((TMath::Abs(fSystematicScalingSplinesBelowThreshold - 1.0) > fgkEpsilon) ||
+ (TMath::Abs(fSystematicScalingSplinesAboveThreshold - 1.0) > fgkEpsilon)) {
+
+ // Tune turn-on of correction for pions (not so relevant for the other species, since at very large momenta)
+ Double_t bg = 0;
+ Double_t scaleFactor = 1.;
+ Double_t usedSystematicScalingSplines = 1.;
+
+ bg = pTPC / AliPID::ParticleMass(AliPID::kElectron);
+ scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
+ usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingSplinesAboveThreshold * scaleFactor;
+ dEdxEl *= usedSystematicScalingSplines;
+
+ bg = pTPC / AliPID::ParticleMass(AliPID::kKaon);
+ scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
+ usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingSplinesAboveThreshold * scaleFactor;
+ dEdxKa *= usedSystematicScalingSplines;
+
+ bg = pTPC / AliPID::ParticleMass(AliPID::kPion);
+ scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
+ usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingSplinesAboveThreshold * scaleFactor;
+ dEdxPi *= usedSystematicScalingSplines;
+
+ if (fTakeIntoAccountMuons) {
+ bg = pTPC / AliPID::ParticleMass(AliPID::kMuon);
+ scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
+ usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingSplinesAboveThreshold * scaleFactor;
+ dEdxMu *= usedSystematicScalingSplines;
+ }
+
+
+ bg = pTPC / AliPID::ParticleMass(AliPID::kProton);
+ scaleFactor = 0.5 * (1. + TMath::Erf((bg - fSystematicScalingSplinesThreshold) / 4.));
+ usedSystematicScalingSplines = fSystematicScalingSplinesBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingSplinesAboveThreshold * scaleFactor;
+ dEdxPr *= usedSystematicScalingSplines;
}
// Get the eta correction factors for the (modified) expected dEdx
Double_t etaCorrEl = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxEl) : 1.;
Double_t etaCorrKa = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxKa) : 1.;
Double_t etaCorrPi = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxPi) : 1.;
- Double_t etaCorrMu = fTakeIntoAccountMuons && !fPIDResponse->UseTPCEtaCorrection() ?
+ Double_t etaCorrMu = fTakeIntoAccountMuons && fPIDResponse->UseTPCEtaCorrection() ?
fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxMu) : 1.;
Double_t etaCorrPr = fPIDResponse->UseTPCEtaCorrection() ? fPIDResponse->GetTPCResponse().GetEtaCorrectionFast(track, dEdxPr) : 1.;
// Due to additional azimuthal effects, there is an additional eta dependence for low momenta which is not corrected successfully so far.
// One can assign a different (higher) systematic scale factor for this low-p region and a threshold which separates low- and high-p.
- // An ERF will be used to get (as a function of P_TPC) from one correction factor to the other within roughly 0.2 GeV/c
+ // An ERF will be used to get (as a function of p_TPC) from one correction factor to the other within roughly 0.2 GeV/c
Double_t usedSystematicScalingEtaCorrection = fSystematicScalingEtaCorrectionHighMomenta;
if (TMath::Abs(fSystematicScalingEtaCorrectionHighMomenta - fSystematicScalingEtaCorrectionLowMomenta) > fgkEpsilon) {
- const Double_t pTPC = track->GetTPCmomentum();
const Double_t fractionHighMomentumScaleFactor = 0.5 * (1. + TMath::Erf((pTPC - fSystematicScalingEtaCorrectionMomentumThr) / 0.1));
usedSystematicScalingEtaCorrection = fSystematicScalingEtaCorrectionLowMomenta * (1 - fractionHighMomentumScaleFactor)
+ fSystematicScalingEtaCorrectionHighMomenta * fractionHighMomentumScaleFactor;
}
+ Double_t maxEtaVariationEl = GetMaxEtaVariation(dEdxEl);
+ etaCorrEl = etaCorrEl * (1.0 + (usedSystematicScalingEtaCorrection - 1.) * (etaCorrEl - 1.0) / maxEtaVariationEl);
+
+ Double_t maxEtaVariationKa = GetMaxEtaVariation(dEdxKa);
+ etaCorrKa = etaCorrKa * (1.0 + (usedSystematicScalingEtaCorrection - 1.) * (etaCorrKa - 1.0) / maxEtaVariationKa);
+
+ Double_t maxEtaVariationPi = GetMaxEtaVariation(dEdxPi);
+ etaCorrPi = etaCorrPi * (1.0 + (usedSystematicScalingEtaCorrection - 1.) * (etaCorrPi - 1.0) / maxEtaVariationPi);
+
+ if (fTakeIntoAccountMuons) {
+ Double_t maxEtaVariationMu = GetMaxEtaVariation(dEdxMu);
+ etaCorrMu = etaCorrMu * (1.0 + (usedSystematicScalingEtaCorrection - 1.) * (etaCorrMu - 1.0) / maxEtaVariationMu);
+ }
+ else
+ etaCorrMu = 1.0;
+
+ Double_t maxEtaVariationPr = GetMaxEtaVariation(dEdxPr);
+ etaCorrPr = etaCorrPr * (1.0 + (usedSystematicScalingEtaCorrection - 1.) * (etaCorrPr - 1.0) / maxEtaVariationPr);
+
+
+ /*OLD
etaCorrEl = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrEl - 1.0);
etaCorrKa = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrKa - 1.0);
etaCorrPi = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrPi - 1.0);
etaCorrMu = fTakeIntoAccountMuons ? (1.0 + usedSystematicScalingEtaCorrection * (etaCorrMu - 1.0)) : 1.0;
etaCorrPr = 1.0 + usedSystematicScalingEtaCorrection * (etaCorrPr - 1.0);
+ */
}
// Get the multiplicity correction factors for the (modified) expected dEdx
// This means there is no extra parameter for the multiplicitySigmaCorrFactor, but only for the sigma map itself.
// This is valid, since it appears only as a product. One has to assume a larger systematic shift in case of additional
// multiplicity dependence....
- Double_t sigmaRelEl = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- / fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- * fSystematicScalingEtaSigmaPara * multiplicityCorrSigmaEl;
- Double_t sigmaRelKa = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- / fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- * fSystematicScalingEtaSigmaPara * multiplicityCorrSigmaKa;
+ Bool_t doSigmaSystematics = (TMath::Abs(fSystematicScalingEtaSigmaParaBelowThreshold - 1.0) > fgkEpsilon) ||
+ (TMath::Abs(fSystematicScalingEtaSigmaParaAboveThreshold - 1.0) > fgkEpsilon);
+
+
+ Double_t dEdxElExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE);
+ Double_t systematicScalingEtaSigmaParaEl = 1.;
+ if (doSigmaSystematics) {
+ Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxElExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
+ systematicScalingEtaSigmaParaEl = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
+ }
+ Double_t sigmaRelEl = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE)
+ / dEdxElExpected * systematicScalingEtaSigmaParaEl * multiplicityCorrSigmaEl;
+
+
+ Double_t dEdxKaExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE);
+ Double_t systematicScalingEtaSigmaParaKa = 1.;
+ if (doSigmaSystematics) {
+ Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxKaExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
+ systematicScalingEtaSigmaParaKa = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
+ }
+ Double_t sigmaRelKa = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kKaon, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE)
+ / dEdxKaExpected * systematicScalingEtaSigmaParaKa * multiplicityCorrSigmaKa;
+
+
+ Double_t dEdxPiExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE);
+ Double_t systematicScalingEtaSigmaParaPi = 1.;
+ if (doSigmaSystematics) {
+ Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxPiExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
+ systematicScalingEtaSigmaParaPi = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
+ }
+ Double_t sigmaRelPi = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE)
+ / dEdxPiExpected * systematicScalingEtaSigmaParaPi * multiplicityCorrSigmaPi;
- Double_t sigmaRelPi = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- / fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kPion, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- * fSystematicScalingEtaSigmaPara * multiplicityCorrSigmaPi;
- Double_t sigmaRelMu = fTakeIntoAccountMuons ?
- fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- / fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- * fSystematicScalingEtaSigmaPara * multiplicityCorrSigmaMu
- : 999.;
+ Double_t sigmaRelMu = 999.;
+ if (fTakeIntoAccountMuons) {
+ Double_t dEdxMuExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE);
+ Double_t systematicScalingEtaSigmaParaMu = 1.;
+ if (doSigmaSystematics) {
+ Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxMuExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
+ systematicScalingEtaSigmaParaMu = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
+ }
+ sigmaRelMu = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kMuon, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
+ / dEdxMuExpected * systematicScalingEtaSigmaParaMu * multiplicityCorrSigmaMu;
+ }
- Double_t sigmaRelPr = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- / fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault, kTRUE, kFALSE)
- * fSystematicScalingEtaSigmaPara * multiplicityCorrSigmaPr;
+
+ Double_t dEdxPrExpected = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE);
+ Double_t systematicScalingEtaSigmaParaPr = 1.;
+ if (doSigmaSystematics) {
+ Double_t scaleFactor = 0.5 * (1. + TMath::Erf((dEdxPrExpected - fSystematicScalingEtaSigmaParaThreshold) / 25.));
+ systematicScalingEtaSigmaParaPr = fSystematicScalingEtaSigmaParaBelowThreshold * (1 - scaleFactor)
+ + fSystematicScalingEtaSigmaParaAboveThreshold * scaleFactor;
+ }
+ Double_t sigmaRelPr = fPIDResponse->GetTPCResponse().GetExpectedSigma(track, AliPID::kProton, AliTPCPIDResponse::kdEdxDefault,
+ kTRUE, kFALSE)
+ / dEdxPrExpected * systematicScalingEtaSigmaParaPr * multiplicityCorrSigmaPr;
// Now scale the (possibly modified) spline values with the (possibly modified) correction factors
dEdxEl *= etaCorrEl * multiplicityCorrEl;
}
else {
- // No systematic studies on expected signal - just take it as it comve from the TPCPIDResponse
+ // No systematic studies on expected signal - just take it as it comes from the TPCPIDResponse
dEdxEl = fPIDResponse->GetTPCResponse().GetExpectedSignal(track, AliPID::kElectron, AliTPCPIDResponse::kdEdxDefault,
fPIDResponse->UseTPCEtaCorrection(),
fPIDResponse->UseTPCMultiplicityCorrection());
if(fDebug > 2)
printf("File: %s, Line: %d: ProcessTrack -> Compute probabilities\n", (char*)__FILE__, __LINE__);
+
// Use probabilities to weigh the response generation for the different species.
// Also determine the most probable particle type.
Double_t prob[AliPID::kSPECIESC];
fPIDcombined->ComputeProbabilities(track, fPIDResponse, prob);
+ // If muons are not to be taken into account, just set their probability to zero and normalise the remaining probabilities later
+ if (!fTakeIntoAccountMuons)
+ prob[AliPID::kMuon] = 0;
+
+ // Priors might cause problems in case of mismatches, i.e. mismatch particles will be identified as pions.
+ // Can be easily caught for low p_TPC by just setting pion (and muon) probs to zero, if dEdx is larger than
+ // expected dEdx of electrons and kaons
+ if (pTPC < 1. && dEdxTPC > dEdxEl && dEdxTPC > dEdxKa) {
+ prob[AliPID::kMuon] = 0;
+ prob[AliPID::kPion] = 0;
+ }
+
+
// Bug: One can set the number of species for PIDcombined, but PIDcombined will call PIDresponse, which writes without testing
// the probs for kSPECIESC (including light nuclei) into the array.
// In this case, when only kSPECIES are considered, the probabilities have to be rescaled!
- for (Int_t i = AliPID::kSPECIES; i < AliPID::kSPECIESC; i++)
- prob[i] = 0;
- // If muons are not to be taken into account, just set their probability to zero and normalise the remaining probabilities
- if (!fTakeIntoAccountMuons)
- prob[AliPID::kMuon] = 0;
+ // Exceptions:
+ // 1. If the most probable PID is a light nucleus and above expected dEdx + 5 sigma of el to be sure not to mix up things in the
+ // high-pT region (also contribution there completely negligable!)
+ // 2. If dEdx is larger than the expected dEdx + 5 sigma of el and pr, it is most likely a light nucleus
+ // (if dEdx is more than 5 sigma away from expectation, flat TPC probs are set... and the light nuclei splines are not
+ // too accurate)
+ // In these cases:
+ // The highest expected dEdx is either for pr or for el. Assign 100% probability to the species with highest expected dEdx then.
+ // In all other cases: Throw away light nuclei probs and rescale other probs to 100%.
+
+ // Find most probable species for the ID
+ Int_t maxIndex = TMath::LocMax(AliPID::kSPECIESC, prob);
+
+ if ((prob[maxIndex] > 0 && maxIndex >= AliPID::kSPECIES && dEdxTPC > dEdxEl + 5. * sigmaEl) ||
+ (dEdxTPC > dEdxEl + 5. * sigmaEl && dEdxTPC > dEdxPr + 5. * sigmaPr)) {
+ for (Int_t i = 0; i < AliPID::kSPECIESC; i++)
+ prob[i] = 0;
+
+ if (dEdxEl > dEdxPr) {
+ prob[AliPID::kElectron] = 1.;
+ maxIndex = AliPID::kElectron;
+ }
+ else {
+ prob[AliPID::kProton] = 1.;
+ maxIndex = AliPID::kProton;
+ }
+ }
+ else {
+ for (Int_t i = AliPID::kSPECIES; i < AliPID::kSPECIESC; i++)
+ prob[i] = 0;
+
+ Double_t probSum = 0.;
+ for (Int_t i = 0; i < AliPID::kSPECIES; i++)
+ probSum += prob[i];
+
+ if (probSum > 0) {
+ for (Int_t i = 0; i < AliPID::kSPECIES; i++)
+ prob[i] /= probSum;
+ }
+
+ // If all probabilities are equal (should only happen if no priors are used), set most probable PID to pion
+ // because LocMax returns just the first maximal value (i.e. AliPID::kElectron)
+ if (TMath::Abs(prob[maxIndex] - 1. / AliPID::kSPECIES) < 1e-5)
+ maxIndex = AliPID::kPion;
+
+ // In all other cases, the maximum remains untouched from the scaling (and is < AliPID::kSPECIES by construction)
+ }
- Double_t probSum = 0.;
- for (Int_t i = 0; i < AliPID::kSPECIES; i++)
- probSum += prob[i];
+ if (fDoDeDxCheck) {
+ // Generate the expected responses in DeltaPrime and translate to real dEdx. Only take responses for exactly that species
+ // (i.e. with pre-PID)
+
+ Int_t numGenEntries = fgkMaxNumGenEntries; // fgkMaxNumGenEntries = 500
+
+ ErrorCode errCode = kNoErrors;
- if (probSum > 0) {
- for (Int_t i = 0; i < AliPID::kSPECIES; i++)
- prob[i] /= probSum;
+ if(fDebug > 2)
+ printf("File: %s, Line: %d: ProcessTrack -> Generate Responses for dEdx check\n", (char*)__FILE__, __LINE__);
+
+ // Electrons
+ errCode = GenerateDetectorResponse(errCode, 1., sigmaEl / dEdxEl, fGenRespElDeltaPrimeEl, numGenEntries);
+
+ // Kaons
+ errCode = GenerateDetectorResponse(errCode, 1., sigmaKa / dEdxKa, fGenRespKaDeltaPrimeKa, numGenEntries);
+
+ // Pions
+ errCode = GenerateDetectorResponse(errCode, 1., sigmaPi / dEdxPi, fGenRespPiDeltaPrimePi, numGenEntries);
+
+ // Protons
+ errCode = GenerateDetectorResponse(errCode, 1., sigmaPr / dEdxPr, fGenRespPrDeltaPrimePr, numGenEntries);
+
+ if (errCode == kNoErrors) {
+ Double_t genEntry[kDeDxCheckNumAxes];
+ genEntry[kDeDxCheckJetPt] = jetPt;
+ genEntry[kDeDxCheckEtaAbs] = TMath::Abs(track->Eta());
+ genEntry[kDeDxCheckP] = pTPC;
+
+
+ for (Int_t n = 0; n < numGenEntries; n++) {
+ // If no MC info is available or shall not be used, use weighting with priors to generate entries for the different species
+ Double_t rnd = fRandom->Rndm(); // Produce uniformly distributed floating point in ]0, 1]
+
+ // Consider generated response as originating from...
+ if (rnd <= prob[AliPID::kElectron]) {
+ genEntry[kDeDxCheckPID] = 0; // ... an electron
+ genEntry[kDeDxCheckDeDx] = fGenRespElDeltaPrimeEl[n] * dEdxEl;
+ }
+ else if (rnd <= prob[AliPID::kElectron] + prob[AliPID::kKaon]) {
+ genEntry[kDeDxCheckPID] = 1; // ... a kaon
+ genEntry[kDeDxCheckDeDx] = fGenRespKaDeltaPrimeKa[n] * dEdxKa;
+ }
+ else if (rnd <= prob[AliPID::kElectron] + prob[AliPID::kKaon] + prob[AliPID::kMuon] + prob[AliPID::kPion]) {
+ genEntry[kDeDxCheckPID] = 2; // ... a pion (or a muon)
+ genEntry[kDeDxCheckDeDx] = fGenRespPiDeltaPrimePi[n] * dEdxPi;
+ }
+ else {
+ genEntry[kDeDxCheckPID] = 3; // ... a proton
+ genEntry[kDeDxCheckDeDx] = fGenRespPrDeltaPrimePr[n] * dEdxPr;
+ }
+
+ fDeDxCheck->Fill(genEntry);
+ }
+ }
+
+ if(fDebug > 2)
+ printf("File: %s, Line: %d: ProcessTrack -> Generate Responses for dEdx check done\n", (char*)__FILE__, __LINE__);
}
+ if (!fDoPID)
+ return kTRUE;
+
if (!isMC) {
- // If there is no MC information, take the most probable species for the ID
- Float_t max = 0.;
- Int_t maxIndex = -1;
- for (Int_t i = 0; i < AliPID::kSPECIES; i++) {
- if (prob[i] > max) {
- max = prob[i];
- maxIndex = i;
- }
+ // Clean up the most probable PID for low momenta (not an issue for the probabilities, since fractions small,
+ // but to get clean (and nice looking) templates (if most probable PID is used instead of generated responses), it should be done).
+ // Problem: If more than 5 sigma away (and since priors also included), most probable PID for dEdx around protons could be pions.
+ // Idea: Only clean selection for K and p possible. So, just take for the most probable PID the probs from TPC only calculated
+ // by hand without restriction to 5 sigma and without priors. This will not affect the template generation, but afterwards one
+ // can replace the K and p templates with the most probable PID distributions, so all other species templates remain the same.
+ // I.e. it doesn't hurt if the most probable PID is distributed incorrectly between el, pi, mu.
+ Bool_t maxIndexSetManually = kFALSE;
+
+ if (pTPC < 1.) {
+ Double_t probManualTPC[AliPID::kSPECIES];
+ for (Int_t i = 0; i < AliPID::kSPECIES; i++)
+ probManualTPC[i] = 0;
+
+ probManualTPC[AliPID::kElectron] = TMath::Exp(-0.5*(dEdxTPC-dEdxEl)*(dEdxTPC-dEdxEl)/(sigmaEl*sigmaEl))/sigmaEl;
+ // Muons are not important here, just ignore and save processing time
+ probManualTPC[AliPID::kMuon] = 0.;//TMath::Exp(-0.5*(dEdxTPC-dEdxMu)*(dEdxTPC-dEdxMu)/(sigmaMu*sigmaMu))/sigmaMu;
+ probManualTPC[AliPID::kPion] = TMath::Exp(-0.5*(dEdxTPC-dEdxPi)*(dEdxTPC-dEdxPi)/(sigmaPi*sigmaPi))/sigmaPi;
+ probManualTPC[AliPID::kKaon] = TMath::Exp(-0.5*(dEdxTPC-dEdxKa)*(dEdxTPC-dEdxKa)/(sigmaKa*sigmaKa))/sigmaKa;
+ probManualTPC[AliPID::kProton] = TMath::Exp(-0.5*(dEdxTPC-dEdxPr)*(dEdxTPC-dEdxPr)/(sigmaPr*sigmaPr))/sigmaPr;
+
+ const Int_t maxIndexManualTPC = TMath::LocMax(AliPID::kSPECIES, probManualTPC);
+ // Should always be > 0, but in case the dEdx is far off such that the machine accuracy sets every prob to zero,
+ // better take the "old" result
+ if (probManualTPC[maxIndexManualTPC] > 0.)
+ maxIndex = maxIndexManualTPC;
+
+ maxIndexSetManually = kTRUE;
}
-
+
+
// Translate from AliPID numbering to numbering of this class
- if (max > 0) {
+ if (prob[maxIndex] > 0 || maxIndexSetManually) {
if (maxIndex == AliPID::kElectron)
binMC = 0;
else if (maxIndex == AliPID::kKaon)
rangeEnd = fConvolutedGausDeltaPrime->GetX(maximumFraction, upBoundSearchBoundLow, upBoundSearchBoundUp, (maxX < 0.4) ? 1e-5 : 0.001);
fConvolutedGausDeltaPrime->SetRange(rangeStart,rangeEnd);
- fConvolutedGausDeltaPrime->SetNpx(fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindBin(rangeEnd)
- - fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindBin(rangeStart) + 1);
+ fConvolutedGausDeltaPrime->SetNpx(fDeltaPrimeAxis->FindFixBin(rangeEnd) - fDeltaPrimeAxis->FindFixBin(rangeStart) + 1);
+
+ fConvolutedGausDeltaPrime->SetNpx(fDeltaPrimeAxis->FindFixBin(rangeEnd) - fDeltaPrimeAxis->FindFixBin(rangeStart) + 1);
+ //fConvolutedGausDeltaPrime->SetNpx(fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindFixBin(rangeEnd)
+ // - fhPIDdataAll->GetAxis(kDataDeltaPrimeSpecies)->FindFixBin(rangeStart) + 1);
//fConvolutedGausDeltaPrime->SetNpx((rangeEnd - rangeStart) / fDeltaPrimeBinWidth + 1);
}
hist->GetAxis(kGenSelectSpecies)->SetBinLabel(3, "#pi");
hist->GetAxis(kGenSelectSpecies)->SetBinLabel(4, "p");
- hist->GetAxis(kGenPt)->SetTitle("P_{T} (GeV/c)");
+ hist->GetAxis(kGenPt)->SetTitle("p_{T} (GeV/c)");
hist->GetAxis(kGenDeltaPrimeSpecies)->SetTitle("TPC #Delta'_{species} (arb. unit)");
hist->GetAxis(kGenCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
if (fStoreAdditionalJetInformation) {
- hist->GetAxis(kGenJetPt)->SetTitle("P_{T}^{jet} (GeV/c)");
+ hist->GetAxis(kGenJetPt)->SetTitle("p_{T}^{jet} (GeV/c)");
- hist->GetAxis(kGenZ)->SetTitle("z = P_{T}^{track} / P_{T}^{jet}");
+ hist->GetAxis(kGenZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
- hist->GetAxis(kGenXi)->SetTitle("#xi = ln(P_{T}^{jet} / P_{T}^{track})");
+ hist->GetAxis(kGenXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
}
hist->GetAxis(GetIndexOfChargeAxisGen())->SetTitle("Charge (e_{0})");
// Set axes titles
hist->GetAxis(kGenYieldMCID)->SetTitle("MC PID");
- hist->GetAxis(kGenYieldPt)->SetTitle("P_{T}^{gen} (GeV/c)");
+ hist->GetAxis(kGenYieldPt)->SetTitle("p_{T}^{gen} (GeV/c)");
hist->GetAxis(kGenYieldCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
if (fStoreAdditionalJetInformation) {
- hist->GetAxis(kGenYieldJetPt)->SetTitle("P_{T}^{jet, gen} (GeV/c)");
+ hist->GetAxis(kGenYieldJetPt)->SetTitle("p_{T}^{jet, gen} (GeV/c)");
- hist->GetAxis(kGenYieldZ)->SetTitle("z = P_{T}^{track} / P_{T}^{jet}");
+ hist->GetAxis(kGenYieldZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
- hist->GetAxis(kGenYieldXi)->SetTitle("#xi = ln(P_{T}^{jet} / P_{T}^{track})");
+ hist->GetAxis(kGenYieldXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
}
hist->GetAxis(GetIndexOfChargeAxisGenYield())->SetTitle("Charge (e_{0})");
hist->GetAxis(kDataSelectSpecies)->SetBinLabel(3, "#pi");
hist->GetAxis(kDataSelectSpecies)->SetBinLabel(4, "p");
- hist->GetAxis(kDataPt)->SetTitle("P_{T} (GeV/c)");
+ hist->GetAxis(kDataPt)->SetTitle("p_{T} (GeV/c)");
hist->GetAxis(kDataDeltaPrimeSpecies)->SetTitle("TPC #Delta'_{species} (arb. unit)");
hist->GetAxis(kDataCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
if (fStoreAdditionalJetInformation) {
- hist->GetAxis(kDataJetPt)->SetTitle("P_{T}^{jet} (GeV/c)");
+ hist->GetAxis(kDataJetPt)->SetTitle("p_{T}^{jet} (GeV/c)");
- hist->GetAxis(kDataZ)->SetTitle("z = P_{T}^{track} / P_{T}^{jet}");
+ hist->GetAxis(kDataZ)->SetTitle("z = p_{T}^{track} / p_{T}^{jet}");
- hist->GetAxis(kDataXi)->SetTitle("#xi = ln(P_{T}^{jet} / P_{T}^{track})");
+ hist->GetAxis(kDataXi)->SetTitle("#xi = ln(p_{T}^{jet} / p_{T}^{track})");
}
hist->GetAxis(GetIndexOfChargeAxisData())->SetTitle("Charge (e_{0})");
hist->SetBinEdges(kPtResCentrality, binsCent);
// Set axes titles
- hist->GetAxis(kPtResJetPt)->SetTitle("P_{T}^{jet, rec} (GeV/c)");
- hist->GetAxis(kPtResGenPt)->SetTitle("P_{T}^{gen} (GeV/c)");
- hist->GetAxis(kPtResRecPt)->SetTitle("P_{T}^{rec} (GeV/c)");
+ hist->GetAxis(kPtResJetPt)->SetTitle("p_{T}^{jet, rec} (GeV/c)");
+ hist->GetAxis(kPtResGenPt)->SetTitle("p_{T}^{gen} (GeV/c)");
+ hist->GetAxis(kPtResRecPt)->SetTitle("p_{T}^{rec} (GeV/c)");
hist->GetAxis(kPtResCharge)->SetTitle("Charge (e_{0})");
hist->GetAxis(kPtResCentrality)->SetTitle(Form("Centrality Percentile (%s)", fCentralityEstimator.Data()));
}
+
+//________________________________________________________________________
+void AliAnalysisTaskPID::SetUpDeDxCheckHist(THnSparse* hist, const Double_t* binsPt, const Double_t* binsJetPt, const Double_t* binsEtaAbs) const
+{
+ // Sets bin limits for axes which are not standard binned and the axes titles.
+ hist->SetBinEdges(kDeDxCheckP, binsPt);
+ hist->SetBinEdges(kDeDxCheckJetPt, binsJetPt);
+ hist->SetBinEdges(kDeDxCheckEtaAbs, binsEtaAbs);
+
+
+ // Set axes titles
+ hist->GetAxis(kDeDxCheckPID)->SetTitle("PID");
+ hist->GetAxis(kDeDxCheckPID)->SetBinLabel(1, "e");
+ hist->GetAxis(kDeDxCheckPID)->SetBinLabel(2, "K");
+ hist->GetAxis(kDeDxCheckPID)->SetBinLabel(3, "#pi");
+ hist->GetAxis(kDeDxCheckPID)->SetBinLabel(4, "p");
+
+
+ hist->GetAxis(kDeDxCheckJetPt)->SetTitle("p_{T}^{jet} (GeV/c)");
+ hist->GetAxis(kDeDxCheckEtaAbs)->SetTitle("|#eta|");
+ hist->GetAxis(kDeDxCheckP)->SetTitle("p_{TPC} (GeV/c)");
+ hist->GetAxis(kDeDxCheckDeDx)->SetTitle("TPC dE/dx (arb. unit)");
+}
\ No newline at end of file
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff