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[PWGLF] Added rejection condition for track misidentification #16109

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[PWGLF] Added rejection condition for track misidentification #16109

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73 changes: 71 additions & 2 deletions PWGLF/Tasks/Resonances/kstarqa.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,7 @@ struct Kstarqa {
Configurable<bool> isapplypTdepPIDTOF{"isapplypTdepPIDTOF", false, "Apply pT dependent PID for TOF"};
Configurable<bool> isApplyParticleMID{"isApplyParticleMID", false, "Apply particle misidentification"};
Configurable<bool> isApplyParticleMIDPtDep{"isApplyParticleMIDPtDep", false, "Apply pT dependent MID selection"};
Configurable<bool> isApplyParticleMIDPtDep2{"isApplyParticleMIDPtDep2", false, "Apply pT dependent MID selection (nSigma less of contamination lt nSigma of signal)"};
Configurable<bool> allGenEvents{"allGenEvents", false, "Fill all generated events in MC for signal loss calculations"};

Configurable<bool> isApplyDeepAngle{"isApplyDeepAngle", false, "Deep Angle cut"};
Expand Down Expand Up @@ -670,7 +671,7 @@ struct Kstarqa {
return true;
}
} else {
if (candidate.hasTOF() && std::abs(candidate.tofNSigmaPi() - configGp.shiftInNsigmaTOFPi) < configGp.nsigmaCutCombinedPi && std::abs(candidate.tpcNSigmaPi()) < configGp.nsigmaCutCombinedPi) {
if (candidate.hasTOF() && std::abs(candidate.tofNSigmaPi() - configGp.shiftInNsigmaTOFPi) < configGp.nsigmaCutTOFPi && std::abs(candidate.tpcNSigmaPi()) < configGp.nsigmaCutTPCPi) {
return true;
}
}
Expand All @@ -693,7 +694,7 @@ struct Kstarqa {
return true;
}
} else {
if (candidate.hasTOF() && std::abs(candidate.tofNSigmaKa() - configGp.shiftInNsigmaTOFKa) < configGp.nsigmaCutCombinedKa && std::abs(candidate.tpcNSigmaKa()) < configGp.nsigmaCutCombinedKa) {
if (candidate.hasTOF() && std::abs(candidate.tofNSigmaKa() - configGp.shiftInNsigmaTOFKa) < configGp.nsigmaCutTOFKa && std::abs(candidate.tpcNSigmaKa()) < configGp.nsigmaCutTPCKa) {
return true;
}
}
Expand Down Expand Up @@ -827,6 +828,25 @@ struct Kstarqa {
return false;
}

template <typename T>
bool selectionMIDPtDep2(const T& candidate, int PID)
{
const float ptCut1 = 1.0f;
const float ptCut2p5 = 2.5f;
const float ptCut07 = 0.7f;

if (PID == PIDParticle::kPion) {
if (candidate.pt() >= ptCut1 && candidate.pt() < ptCut2p5 && !candidate.hasTOF() && std::abs(candidate.tpcNSigmaPi()) < std::abs(candidate.tpcNSigmaKa())) {
return true;
}
} else if (PID == PIDParticle::kKaon) {
if (candidate.pt() >= ptCut07 && candidate.pt() < ptCut2p5 && !candidate.hasTOF() && std::abs(candidate.tpcNSigmaKa()) < std::abs(candidate.tpcNSigmaPi())) {
return true;
}
}
return false;
}

template <typename T>
bool selectionPIDPtDep(const T& candidate, int PID)
{
Expand Down Expand Up @@ -1184,6 +1204,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(track1, 0)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(track2, 1)) // Pion misidentified as kaon
continue;
}

rEventSelection.fill(HIST("tracksCheckData"), 5.5);

if (cQAplots) {
Expand Down Expand Up @@ -1327,6 +1354,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(t1, 0)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(t2, 1)) // Pion misidentified as kaon
continue;
}

if (!selectionPair(t1, t2)) {
continue;
}
Expand Down Expand Up @@ -1406,6 +1440,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(t1, 0)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(t2, 1)) // Pion misidentified as kaon
continue;
}

if (!t1.has_mcParticle() || !t2.has_mcParticle()) {
continue; // skip if no MC particle associated
}
Expand Down Expand Up @@ -1556,6 +1597,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(track1, 0)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(track2, 1)) // Pion misidentified as kaon
continue;
}

rEventSelection.fill(HIST("tracksCheckData"), 5.5);
// if (std::abs(track1.rapidity(o2::track::PID::getMass(o2::track::PID::Kaon))) > configGp.ctrackRapidity)
// continue;
Expand Down Expand Up @@ -2124,6 +2172,13 @@ struct Kstarqa {
if (selectionMIDPtDep(track2, 0)) // Pion misidentified as kaon
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(track1, 1)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(track2, 0)) // Pion misidentified as kaon
continue;
}
rEventSelection.fill(HIST("recMCparticles"), 13.5);

// if (std::abs(track1.rapidity(o2::track::PID::getMass(o2::track::PID::Pion))) > configGp.ctrackRapidity)
Expand Down Expand Up @@ -2170,6 +2225,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(track1, 0)) // Kaon misidentified as pion
continue;
if (selectionMIDPtDep2(track2, 1)) // Pion misidentified as kaon
continue;
}

// if (std::abs(track1.rapidity(o2::track::PID::getMass(o2::track::PID::Kaon))) > configGp.ctrackRapidity)
// continue;

Expand Down Expand Up @@ -2401,6 +2463,13 @@ struct Kstarqa {
continue;
}

if (configGp.isApplyParticleMIDPtDep2) {
if (selectionMIDPtDep2(track1, 1)) // Pion misidentified as kaon
continue;
if (selectionMIDPtDep2(track2, 0)) // Kaon misidentified as pion
continue;
}

// if (std::abs(track1.rapidity(o2::track::PID::getMass(o2::track::PID::Kaon))) > configGp.ctrackRapidity)
// continue;

Expand Down
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