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[PWGHF] taskCharmPolarisation: Update EP frame for MC analysis #15954

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Merged
fgrosa merged 4 commits into from
Apr 24, 2026
+45 −13
Merged

[PWGHF] taskCharmPolarisation: Update EP frame for MC analysis #15954

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51cca89
Update EP frame for MC analysis
Mingze129 Apr 24, 2026
6f520e3
Add task for MC analysis without ML output
Mingze129 Apr 24, 2026
8474fcb
Please consider the following formatting changes
alibuild Apr 24, 2026
00ea545
Merge pull request #25 from alibuild/alibot-cleanup-15954
Mingze129 Apr 24, 2026
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58 changes: 45 additions & 13 deletions PWGHF/D2H/Tasks/taskCharmPolarisation.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -1696,6 +1696,40 @@ struct HfTaskCharmPolarisation {
}
}
}
} else {
if (origin == RecoDecay::OriginType::Prompt) { // prompt
if constexpr (Channel == charm_polarisation::DecayChannel::DstarToDzeroPi) { // D*+
if (!isPartRecoDstar) {
if (activateTrackingSys) {
registry.fill(HIST("hRecoPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, absEtaMin, numItsClsMin, numTpcClsMin, nMuons, centrality);
} else {
registry.fill(HIST("hRecoPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, nMuons, centrality);
}
} else {
if (activateTrackingSys) {
registry.fill(HIST("hPartRecoPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, absEtaMin, numItsClsMin, numTpcClsMin, nMuons, centrality);
} else {
registry.fill(HIST("hPartRecoPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, nMuons, centrality);
}
}
}
} else { // non-prompt
if constexpr (Channel == charm_polarisation::DecayChannel::DstarToDzeroPi) { // D*+
if (!isPartRecoDstar) {
if (activateTrackingSys) {
registry.fill(HIST("hRecoNonPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, absEtaMin, numItsClsMin, numTpcClsMin, nMuons, ptBhadMother, centrality);
} else {
registry.fill(HIST("hRecoNonPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, absEtaMin, nMuons, ptBhadMother, centrality);
}
} else {
if (activateTrackingSys) {
registry.fill(HIST("hPartRecoNonPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, absEtaMin, numItsClsMin, numTpcClsMin, nMuons, ptBhadMother, centrality);
} else {
registry.fill(HIST("hPartRecoNonPromptEP"), invMassCharmHad, ptCharmHad, numPvContributors, std::abs(rapCharmHad), invMassD0, cosThetaStar, nMuons, ptBhadMother, centrality);
}
}
}
}
}
}
}
Expand Down Expand Up @@ -1945,7 +1979,7 @@ struct HfTaskCharmPolarisation {
template <charm_polarisation::DecayChannel Channel, bool WithMl, bool DoMc, bool StudyLcPkPiBkgMc = false, bool WithEp = false, typename Cand, typename Part, typename Trk, typename T, typename QVecs = void>
bool runPolarisationAnalysis(Cand const& candidate, int bkgRotationId, T numPvContributors, Part const& particles, Trk const& /*tracks*/, float centrality = -999.f, QVecs const* qVecs = nullptr)
{
if constexpr (WithEp) {
if constexpr (WithEp && !DoMc) {
assert(qVecs && "EP analysis requested but qVecs == nullptr");
assert(centrality && "EP analysis requested but centrality == nullptr");
}
Expand Down Expand Up @@ -2304,22 +2338,20 @@ struct HfTaskCharmPolarisation {
}
}

if constexpr (WithEp) {
if (!DoMc) {
/// EP analysis
if (activateTHnSparseCosThStarEP) {
if constexpr (WithEp && !DoMc) {
// EP analysis for data
float const xQvec = (*qVecs).at(0);
float const yQvec = (*qVecs).at(1);
ROOT::Math::XYZVector const qVecNorm = ROOT::Math::XYZVector(yQvec, -xQvec, 0.f);
ROOT::Math::XYZVector const qVec = ROOT::Math::XYZVector(xQvec, yQvec, 0.);

if (activateTHnSparseCosThStarEP) {
// EP
ROOT::Math::XYZVector threeVecDauCMXY = ROOT::Math::XYZVector(threeVecDauCM.X(), threeVecDauCM.Y(), 0.);
float const phiEP = qVec.Dot(threeVecDauCMXY) / std::sqrt(threeVecDauCMXY.Mag2()) / std::sqrt(qVec.Mag2());
float const cosThetaStarEP = qVecNorm.Dot(threeVecDauCM) / std::sqrt(threeVecDauCM.Mag2()) / std::sqrt(qVecNorm.Mag2());
fillRecoHistos<Channel, WithMl, DoMc, charm_polarisation::CosThetaStarType::EP>(invMassCharmHadForSparse, ptCharmHad, numPvContributors, rapidity, invMassD0, invMassKPiLc, cosThetaStarEP, phiEP, outputMl, isRotatedCandidate, origin, ptBhadMother, resoChannelLc, absEtaTrackMin, numItsClsMin, numTpcClsMin, charge, nMuons, partRecoDstar, centrality);
}
} else {
ROOT::Math::XYZVector threeVecDauCMXY = ROOT::Math::XYZVector(threeVecDauCM.X(), threeVecDauCM.Y(), 0.);
float const phiEP = qVec.Dot(threeVecDauCMXY) / std::sqrt(threeVecDauCMXY.Mag2()) / std::sqrt(qVec.Mag2());
float const cosThetaStarEP = qVecNorm.Dot(threeVecDauCM) / std::sqrt(threeVecDauCM.Mag2()) / std::sqrt(qVecNorm.Mag2());
fillRecoHistos<Channel, WithMl, DoMc, charm_polarisation::CosThetaStarType::EP>(invMassCharmHadForSparse, ptCharmHad, numPvContributors, rapidity, invMassD0, invMassKPiLc, cosThetaStarEP, phiEP, outputMl, isRotatedCandidate, origin, ptBhadMother, resoChannelLc, absEtaTrackMin, numItsClsMin, numTpcClsMin, charge, nMuons, partRecoDstar, centrality);
}
if (DoMc) {
// EP analysis for MC
double const deltaPhi = sampleDeltaPhi(ptCharmHad);
double psi = candidate.phi() - deltaPhi;
ROOT::Math::XYZVector qVecNorm = ROOT::Math::XYZVector(-std::sin(psi), std::cos(psi), 0.f);
Expand Down
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