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[PWGCF] Add dalitz plot for track-v0 analysis in femto framework #15605

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Merged
ariedel-cern merged 1 commit into from
Apr 1, 2026
Merged

[PWGCF] Add dalitz plot for track-v0 analysis in femto framework #15605

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4 changes: 2 additions & 2 deletions PWGCF/Femto/Core/femtoUtils.h
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ float itsSignal(T const& track)
return static_cast<float>(signal);
};

inline double getMass(int pdgCode)
inline double getPdgMass(int pdgCode)
{
// use this function instead of TDatabasePDG to return masses defined in the PhysicsConstants.h header
// this approach saves a lot of memory and important partilces like deuteron are missing in TDatabasePDG anyway
Expand Down Expand Up @@ -119,7 +119,7 @@ inline double getMass(int pdgCode)
mass = o2::constants::physics::MassOmegaMinus;
break;
default:
LOG(fatal) << "PDG code is not suppored";
LOG(warn) << "PDG code is not suppored. Return 0...";
}
return mass;
}
Expand Down
21 changes: 19 additions & 2 deletions PWGCF/Femto/Core/pairBuilder.h
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Expand Up @@ -34,6 +34,8 @@
#include <Framework/HistogramSpec.h>
#include <Framework/Logger.h>

#include <TPDGCode.h>

#include <chrono>
#include <cstdint>
#include <map>
Expand Down Expand Up @@ -595,13 +597,28 @@ class PairTrackV0Builder
mTrackCleaner.init(confTrackCleaner);
mV0Cleaner.init(confV0Cleaner);

int pdgCodePosDau = 0;
int pdgCodeNegDau = 0;
if (modes::isEqual(v0Type, modes::V0::kK0short)) {
pdgCodeNegDau = kPiPlus;
pdgCodeNegDau = kPiMinus;
} else if (modes::isEqual(v0Type, modes::V0::kLambda) || modes::isEqual(v0Type, modes::V0::kAntiLambda)) {
if (confV0Selection.sign.value > 0) {
pdgCodeNegDau = kProton;
pdgCodeNegDau = kPiMinus;
} else {
pdgCodeNegDau = kProtonBar;
pdgCodeNegDau = kPiPlus;
}
}

mPairHistManagerSe.template init<mode>(registry, pairHistSpec, confPairBinning, confPairCuts);
mPairHistManagerSe.setMass(confTrackSelection.pdgCodeAbs.value, confV0Selection.pdgCodeAbs.value);
mPairHistManagerSe.setMass(confTrackSelection.pdgCodeAbs.value, 0, 0, confV0Selection.pdgCodeAbs.value, pdgCodePosDau, pdgCodeNegDau);
mPairHistManagerSe.setCharge(confTrackSelection.chargeAbs.value, 1);
mCprSe.init(registry, cprHistSpec, confCpr, confTrackSelection.chargeAbs.value);

mPairHistManagerMe.template init<mode>(registry, pairHistSpec, confPairBinning, confPairCuts);
mPairHistManagerMe.setMass(confTrackSelection.pdgCodeAbs.value, confV0Selection.pdgCodeAbs.value);
mPairHistManagerMe.setMass(confTrackSelection.pdgCodeAbs.value, 0, 0, confV0Selection.pdgCodeAbs.value, pdgCodePosDau, pdgCodeNegDau);
mPairHistManagerMe.setCharge(confTrackSelection.chargeAbs.value, 1);
mCprMe.init(registry, cprHistSpec, confCpr, confTrackSelection.chargeAbs.value);
mPc.template init<mode>(confPairCuts);
Expand Down
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