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[PWGHF/D2H] fixing B mother of dstar particle in MC Rec process function #16455

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Merged
fgrosa merged 1 commit into from
May 29, 2026
+10 −9
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[PWGHF/D2H] fixing B mother of dstar particle in MC Rec process function #16455

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19 changes: 10 additions & 9 deletions PWGHF/D2H/Tasks/taskDstarToD0Pi.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -534,11 +534,11 @@ struct HfTaskDstarToD0Pi {
/// @tparam T1 type of the candidate table
/// @tparam applyMl a boolean to apply ML or not
/// @param candsMcRecSel reconstructed candidates with selection flag
/// @param rowsMcPartilces generated particles table
// /// @param rowsMcPartilces generated particles table
template <bool ApplyMl, typename T1>
void runMcRecTaskDstar(T1 const& candsMcRecSel, CandDstarMcGen const& rowsMcPartilces)
void runMcRecTaskDstar(T1 const& candsMcRecSel /*, CandDstarMcGen const& rowsMcPartilces*/)
{
int8_t signDstar = 0;
// int8_t signDstar = 0;
// MC at Reconstruction level
for (const auto& candDstarMcRec : candsMcRecSel) {
auto ptDstarRecSig = candDstarMcRec.pt();
Expand All @@ -551,10 +551,11 @@ struct HfTaskDstarToD0Pi {
auto nPVContributors = collision.numContrib(); // number of PV contributors
if (std::abs(candDstarMcRec.flagMcMatchRec()) == hf_decay::hf_cand_dstar::DecayChannelMain::DstarToPiKPi) { // if MC matching is successful at Reconstruction Level
// get MC Mother particle
auto prong0 = candDstarMcRec.template prong0_as<aod::TracksWMc>();
auto indexMother = RecoDecay::getMother(rowsMcPartilces, prong0.template mcParticle_as<CandDstarMcGen>(), o2::constants::physics::Pdg::kDStar, true, &signDstar, 2);
auto particleMother = rowsMcPartilces.rawIteratorAt(indexMother); // What is difference between rawIterator() or iteratorAt() methods?
auto ptMother = particleMother.pt();
// auto prong0 = candDstarMcRec.template prong0_as<aod::TracksWMc>();
// auto indexMother = RecoDecay::getMother(rowsMcPartilces, prong0.template mcParticle_as<CandDstarMcGen>(), o2::constants::physics::Pdg::kDStar, true, &signDstar, 2);
// auto particleMother = rowsMcPartilces.rawIteratorAt(indexMother); // What is difference between rawIterator() or iteratorAt() methods?
// auto ptMother = particleMother.pt();
auto ptMother = candDstarMcRec.ptBhadMotherPart();
int const pdgBhadMother = candDstarMcRec.pdgBhadMotherPart();
// For unknown reasons there are charm hadrons coming directly from beauty diquarks without an intermediate B-hadron which have an unreasonable correlation between the pT of the charm hadron and the beauty mother. We also remove charm hadrons from quarkonia.
if (candDstarMcRec.originMcRec() == RecoDecay::OriginType::NonPrompt && (pdgBhadMother == 5101 || pdgBhadMother == 5103 || pdgBhadMother == 5201 || pdgBhadMother == 5203 || pdgBhadMother == 5301 || pdgBhadMother == 5303 || pdgBhadMother == 5401 || pdgBhadMother == 5403 || pdgBhadMother == 5503 || pdgBhadMother == 553 || pdgBhadMother == 555 || pdgBhadMother == 557)) { // o2-linter: disable=pdg/explicit-code, magic-number (constants not in the PDG header)
Expand Down Expand Up @@ -876,7 +877,7 @@ struct HfTaskDstarToD0Pi {
aod::TracksWMc const&)
{
rowsSelectedCandDstarMcRec.bindExternalIndices(&collisions);
runMcRecTaskDstar<false, Partition<CandDstarWSelFlagMcRec>>(rowsSelectedCandDstarMcRec, rowsMcPartilces);
runMcRecTaskDstar<false, Partition<CandDstarWSelFlagMcRec>>(rowsSelectedCandDstarMcRec /*, rowsMcPartilces*/);
runMcGenTaskDstar(collisions, rowsMcPartilces);
}
PROCESS_SWITCH(HfTaskDstarToD0Pi, processMcWoMl, "Process MC Data without ML", false);
Expand All @@ -887,7 +888,7 @@ struct HfTaskDstarToD0Pi {
aod::TracksWMc const&)
{
rowsSelectedCandDstarMcRecWMl.bindExternalIndices(&collisions);
runMcRecTaskDstar<true, Partition<CandDstarWSelFlagWMlMcRec>>(rowsSelectedCandDstarMcRecWMl, rowsMcPartilces);
runMcRecTaskDstar<true, Partition<CandDstarWSelFlagWMlMcRec>>(rowsSelectedCandDstarMcRecWMl /*, rowsMcPartilces*/);
runMcGenTaskDstar(collisions, rowsMcPartilces);
}
PROCESS_SWITCH(HfTaskDstarToD0Pi, processMcWML, "Process MC Data with ML", false);
Expand Down
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