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[PWGCF] Use ITS pid instead of TPC when configured #16459

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SwatiSaha-1997 merged 2 commits into from
May 29, 2026
+85 −45
Merged

[PWGCF] Use ITS pid instead of TPC when configured #16459

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Use ITS pid instead of TPC when configured
SwatiSaha-1997 May 29, 2026
079e8f1
Use ITS pid instead of TPC when configured
SwatiSaha-1997 May 29, 2026
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130 changes: 85 additions & 45 deletions PWGCF/EbyEFluctuations/Tasks/v0ptHadPiKaProt.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,6 @@
#include <ReconstructionDataFormats/PID.h>

#include <TComplex.h>
#include <TDatabasePDG.h>
#include <TF1.h>
#include <THn.h>
#include <TList.h>
Expand Down Expand Up @@ -546,18 +545,31 @@ struct V0ptHadPiKaProt {
return false;
int flag = 0; //! pid check main flag

float partNsigmaTpcOrItsPi = 0.0;
float partNsigmaTpcOrItsKa = 0.0;
float partNsigmaTpcOrItsPr = 0.0;
if (cfgUseItsPID) {
partNsigmaTpcOrItsPi = itsResponse.nSigmaITS<o2::track::PID::Pion>(candidate);
partNsigmaTpcOrItsKa = itsResponse.nSigmaITS<o2::track::PID::Kaon>(candidate);
partNsigmaTpcOrItsPr = itsResponse.nSigmaITS<o2::track::PID::Proton>(candidate);
} else {
partNsigmaTpcOrItsPi = candidate.tpcNSigmaPi();
partNsigmaTpcOrItsKa = candidate.tpcNSigmaKa();
partNsigmaTpcOrItsPr = candidate.tpcNSigmaPr();
}

if (candidate.pt() > cfgCutPtLower && candidate.pt() <= cfgCutPtUpperTPC) {
if (!candidate.hasTOF() && std::abs(candidate.tpcNSigmaPr()) < cfgnSigmaCutTPC) {
if (!candidate.hasTOF() && std::abs(partNsigmaTpcOrItsPr) < cfgnSigmaCutTPC) {
flag = 1;
}
if (candidate.hasTOF() && std::abs(candidate.tpcNSigmaPr()) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaPr()) < cfgnSigmaCutTOF) {
if (candidate.hasTOF() && std::abs(partNsigmaTpcOrItsPr) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaPr()) < cfgnSigmaCutTOF) {
flag = 1;
}
}
if (candidate.hasTOF() && candidate.pt() > cfgCutPtUpperTPC && candidate.pt() < cfgCutPtUpperPID) {
const float combNSigmaPr = std::sqrt(std::pow(candidate.tpcNSigmaPr(), 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(candidate.tpcNSigmaPi(), 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(candidate.tpcNSigmaKa(), 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));
const float combNSigmaPr = std::sqrt(std::pow(partNsigmaTpcOrItsPr, 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(partNsigmaTpcOrItsPi, 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(partNsigmaTpcOrItsKa, 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));

int flag2 = 0;
if (combNSigmaPr < cfgnSigmaOtherParticles)
Expand All @@ -568,8 +580,8 @@ struct V0ptHadPiKaProt {
flag2 += 1;

if (cfgUseNewSeperationPid) {
if (std::abs(candidate.tpcNSigmaPr()) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaPr()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(candidate.tpcNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(candidate.tpcNSigmaKa()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaKa()) > cfgnSigmaSeperationCut)
if (std::abs(partNsigmaTpcOrItsPr) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaPr()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(partNsigmaTpcOrItsPi) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(partNsigmaTpcOrItsKa) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaKa()) > cfgnSigmaSeperationCut)
flag = 1;
}
} else {
Expand Down Expand Up @@ -600,18 +612,31 @@ struct V0ptHadPiKaProt {
return false;
int flag = 0; //! pid check main flag

float partNsigmaTpcOrItsPi = 0.0;
float partNsigmaTpcOrItsKa = 0.0;
float partNsigmaTpcOrItsPr = 0.0;
if (cfgUseItsPID) {
partNsigmaTpcOrItsPi = itsResponse.nSigmaITS<o2::track::PID::Pion>(candidate);
partNsigmaTpcOrItsKa = itsResponse.nSigmaITS<o2::track::PID::Kaon>(candidate);
partNsigmaTpcOrItsPr = itsResponse.nSigmaITS<o2::track::PID::Proton>(candidate);
} else {
partNsigmaTpcOrItsPi = candidate.tpcNSigmaPi();
partNsigmaTpcOrItsKa = candidate.tpcNSigmaKa();
partNsigmaTpcOrItsPr = candidate.tpcNSigmaPr();
}

if (candidate.pt() > cfgCutPtLower && candidate.pt() <= cfgCutPtUpperTPC) {
if (!candidate.hasTOF() && std::abs(candidate.tpcNSigmaPi()) < cfgnSigmaCutTPC) {
if (!candidate.hasTOF() && std::abs(partNsigmaTpcOrItsPi) < cfgnSigmaCutTPC) {
flag = 1;
}
if (candidate.hasTOF() && std::abs(candidate.tpcNSigmaPi()) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaPi()) < cfgnSigmaCutTOF) {
if (candidate.hasTOF() && std::abs(partNsigmaTpcOrItsPi) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaPi()) < cfgnSigmaCutTOF) {
flag = 1;
}
}
if (candidate.hasTOF() && candidate.pt() > cfgCutPtUpperTPC && candidate.pt() < cfgCutPtUpperPID) {
const float combNSigmaPr = std::sqrt(std::pow(candidate.tpcNSigmaPr(), 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(candidate.tpcNSigmaPi(), 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(candidate.tpcNSigmaKa(), 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));
const float combNSigmaPr = std::sqrt(std::pow(partNsigmaTpcOrItsPr, 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(partNsigmaTpcOrItsPi, 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(partNsigmaTpcOrItsKa, 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));

int flag2 = 0;
if (combNSigmaPr < cfgnSigmaOtherParticles)
Expand All @@ -622,8 +647,8 @@ struct V0ptHadPiKaProt {
flag2 += 1;

if (cfgUseNewSeperationPid) {
if (std::abs(candidate.tpcNSigmaPi()) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaPi()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(candidate.tpcNSigmaKa()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaKa()) > cfgnSigmaSeperationCut && std::abs(candidate.tpcNSigmaPr()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPr()) > cfgnSigmaSeperationCut)
if (std::abs(partNsigmaTpcOrItsPi) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaPi()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(partNsigmaTpcOrItsKa) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaKa()) > cfgnSigmaSeperationCut && std::abs(partNsigmaTpcOrItsPr) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPr()) > cfgnSigmaSeperationCut)
flag = 1;
}
} else {
Expand Down Expand Up @@ -654,18 +679,31 @@ struct V0ptHadPiKaProt {
return false;
int flag = 0; //! pid check main flag

float partNsigmaTpcOrItsPi = 0.0;
float partNsigmaTpcOrItsKa = 0.0;
float partNsigmaTpcOrItsPr = 0.0;
if (cfgUseItsPID) {
partNsigmaTpcOrItsPi = itsResponse.nSigmaITS<o2::track::PID::Pion>(candidate);
partNsigmaTpcOrItsKa = itsResponse.nSigmaITS<o2::track::PID::Kaon>(candidate);
partNsigmaTpcOrItsPr = itsResponse.nSigmaITS<o2::track::PID::Proton>(candidate);
} else {
partNsigmaTpcOrItsPi = candidate.tpcNSigmaPi();
partNsigmaTpcOrItsKa = candidate.tpcNSigmaKa();
partNsigmaTpcOrItsPr = candidate.tpcNSigmaPr();
}

if (candidate.pt() > cfgCutPtLower && candidate.pt() <= cfgCutPtUpperTPC) {
if (!candidate.hasTOF() && std::abs(candidate.tpcNSigmaKa()) < cfgnSigmaCutTPC) {
if (!candidate.hasTOF() && std::abs(partNsigmaTpcOrItsKa) < cfgnSigmaCutTPC) {
flag = 1;
}
if (candidate.hasTOF() && std::abs(candidate.tpcNSigmaKa()) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaKa()) < cfgnSigmaCutTOF) {
if (candidate.hasTOF() && std::abs(partNsigmaTpcOrItsKa) < cfgnSigmaCutTPC && std::abs(candidate.tofNSigmaKa()) < cfgnSigmaCutTOF) {
flag = 1;
}
}
if (candidate.hasTOF() && candidate.pt() > cfgCutPtUpperTPC && candidate.pt() < cfgCutPtUpperPID) {
const float combNSigmaPr = std::sqrt(std::pow(candidate.tpcNSigmaPr(), 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(candidate.tpcNSigmaPi(), 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(candidate.tpcNSigmaKa(), 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));
const float combNSigmaPr = std::sqrt(std::pow(partNsigmaTpcOrItsPr, 2.0) + std::pow(candidate.tofNSigmaPr(), 2.0));
const float combNSigmaPi = std::sqrt(std::pow(partNsigmaTpcOrItsPi, 2.0) + std::pow(candidate.tofNSigmaPi(), 2.0));
const float combNSigmaKa = std::sqrt(std::pow(partNsigmaTpcOrItsKa, 2.0) + std::pow(candidate.tofNSigmaKa(), 2.0));

int flag2 = 0;
if (combNSigmaPr < cfgnSigmaOtherParticles)
Expand All @@ -676,8 +714,8 @@ struct V0ptHadPiKaProt {
flag2 += 1;

if (cfgUseNewSeperationPid) {
if (std::abs(candidate.tpcNSigmaKa()) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaKa()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(candidate.tpcNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(candidate.tpcNSigmaPr()) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPr()) > cfgnSigmaSeperationCut)
if (std::abs(partNsigmaTpcOrItsKa) < cfgnSigmaCutTPCHigherPt && std::abs(candidate.tofNSigmaKa()) < cfgnSigmaCutTOFHigherPt) {
if (!(flag2 > 1) && std::abs(partNsigmaTpcOrItsPi) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPi()) > cfgnSigmaSeperationCut && std::abs(partNsigmaTpcOrItsPr) > cfgnSigmaSeperationCut && std::abs(candidate.tofNSigmaPr()) > cfgnSigmaSeperationCut)
flag = 1;
}
} else {
Expand Down Expand Up @@ -1335,27 +1373,29 @@ struct V0ptHadPiKaProt {
double trkEta = track.eta();
double trkPhi = track.phi();

double effweight = 1.0;
if (cfgLoadPtEffWeights) {
effweight = 1.0 / getEffAllCharged(track); // NUE weight
}

// inclusive charged particles
if (track.sign() != 0) {
if (trkEta < cfgCutEtaLeft) {
fPtProfileHad->Fill(trkPt);
pTsumEtaLeftHad += trkPt;
nSumEtaLeftHad += 1.0;
pTsumEtaLeftHad += trkPt * effweight;
nSumEtaLeftHad += effweight;
}
if (trkEta > cfgCutEtaRight) {
pTsumEtaRightHad += trkPt;
nSumEtaRightHad += 1.0;
pTsumEtaRightHad += trkPt * effweight;
nSumEtaRightHad += effweight;
}
}

double phiweight = 1.0;
if (cfgLoadPhiWeights) {
phiweight = getPhiWeight(track, coll.posZ()); // NUA weight
}
double effweight = 1.0;
if (cfgLoadPtEffWeights) {
effweight = 1.0 / getEffAllCharged(track); // NUE weight
}

double weight = phiweight * effweight;

if (track.sign() != 0 && trkPt < cfgCutPtMaxForV02) {
Expand Down Expand Up @@ -1433,34 +1473,34 @@ struct V0ptHadPiKaProt {
histos.fill(HIST("h2DnsigmaProtonTpcVsTofAfterCut"), trkPt, nSigmaTpcProt, nSigmaTofProt);
}

double effweightPion = 1.0;
double effweightKaon = 1.0;
double effweightProton = 1.0;
if (cfgLoadPtEffWeights) {
effweightPion = 1.0 / getEffPion(track); // NUE weight for pion
effweightKaon = 1.0 / getEffKaon(track); // NUE weight for kaon
effweightProton = 1.0 / getEffProton(track); // NUE weight for proton
}

if (track.sign() != 0) {
if (trkPt < cfgCutPtUpperPID) {
if (trkEta < cfgCutEtaLeft) {
if (isPion) {
fPtProfilePi->Fill(trkPt);
nSumEtaLeftPi += 1.0;
fPtProfilePi->Fill(trkPt, effweightPion);
nSumEtaLeftPi += effweightPion;
}
if (isKaon) {
fPtProfileKa->Fill(trkPt);
nSumEtaLeftKa += 1.0;
fPtProfileKa->Fill(trkPt, effweightKaon);
nSumEtaLeftKa += effweightKaon;
}
if (isProton && trkPt > cfgCutPtLowerProt) {
fPtProfileProt->Fill(trkPt);
nSumEtaLeftProt += 1.0;
fPtProfileProt->Fill(trkPt, effweightProton);
nSumEtaLeftProt += effweightProton;
}
}
}
}

double effweightPion = 1.0;
double effweightKaon = 1.0;
double effweightProton = 1.0;
if (cfgLoadPtEffWeights) {
effweightPion = 1.0 / getEffPion(track); // NUE weight for pion
effweightKaon = 1.0 / getEffKaon(track); // NUE weight for kaon
effweightProton = 1.0 / getEffProton(track); // NUE weight for proton
}

// fill subevent B for ***identified particles'*** f(pT) in v02(pT)
if (track.sign() != 0 && trkPt < cfgCutPtMaxForV02) {
if (std::abs(trkEta) < cfgCutEtaWindowB) {
Expand Down
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