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[PWGLF] Fix dca #3

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Merged
yakparo merged 2 commits into from
Nov 24, 2025
Merged

[PWGLF] Fix dca #3

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1b8b481
Merge branch 'AliceO2Group:master' into fix-dca
yakparo Nov 22, 2025
3bdb3e7
Fix dca determination for tracked cascades
yakparo Nov 22, 2025
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38 changes: 22 additions & 16 deletions PWGLF/Tasks/Strangeness/strangeCascTrack.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -283,18 +283,24 @@ struct StrangeCascTrack {
return false;
return true;
}
// checks general selection criteria for cascades
// checks general selection criteria for cascades - from std casc
template <typename TEvent, typename TCascade>
bool isValidCasc(TEvent collision, TCascade cascade, TString particle)
bool isValidCascGen(TEvent collision, TCascade cascade)
{
if (cascade.dcaXYCascToPV() > selCuts.cutDCAtoPVxy)
return false;
if (cascade.dcaZCascToPV() > selCuts.cutDCAtoPVz)
return false;
if (cascade.v0cosPA(collision.posX(), collision.posY(), collision.posZ()) < selCuts.cutV0CosPA)
return false;
if (cascade.bachBaryonCosPA() < selCuts.cutBachCosPA)
return false;
return true;
}
// checks general selection criteria for cascades - from std or tracked casc
template <typename TCascade>
bool isValidCascSpec(TCascade cascade, TString particle)
{
if (cascade.dcaXYCascToPV() > selCuts.cutDCAtoPVxy)
return false;
if (cascade.dcaZCascToPV() > selCuts.cutDCAtoPVz)
return false;
ROOT::Math::PxPyPzMVector momentum;
if (particle == "xi")
momentum.SetCoordinates(cascade.px(), cascade.py(), cascade.pz(), o2::constants::physics::MassXiMinus);
Expand Down Expand Up @@ -490,11 +496,11 @@ struct StrangeCascTrack {

if (doApplyPurity1D) {
if constexpr (requires { cascade.topologyChi2(); }) {
purityOmega = hPurityOmegaTra1D->Interpolate(cascade.pt(), mult);
purityXi = hPurityXiTra1D->Interpolate(cascade.pt(), mult);
purityOmega = hPurityOmegaTra1D->Interpolate(cascade.pt());
purityXi = hPurityXiTra1D->Interpolate(cascade.pt());
if (doPropagatePurity1D) {
purityOmegaErr = hPurityErrOmegaTra1D->Interpolate(cascade.pt(), mult);
purityXiErr = hPurityErrXiTra1D->Interpolate(cascade.pt(), mult);
purityOmegaErr = hPurityErrOmegaTra1D->Interpolate(cascade.pt());
purityXiErr = hPurityErrXiTra1D->Interpolate(cascade.pt());
}
if (purityOmega == 0) { // check for zero purity, do not apply if the case
purityOmega = 1.;
Expand All @@ -505,11 +511,11 @@ struct StrangeCascTrack {
purityXiErr = 0.;
}
} else {
purityOmega = hPurityOmegaStd1D->Interpolate(cascade.pt(), mult);
purityXi = hPurityXiStd1D->Interpolate(cascade.pt(), mult);
purityOmega = hPurityOmegaStd1D->Interpolate(cascade.pt());
purityXi = hPurityXiStd1D->Interpolate(cascade.pt());
if (doPropagatePurity1D) {
purityOmegaErr = hPurityErrOmegaStd1D->Interpolate(cascade.pt(), mult);
purityXiErr = hPurityErrXiStd1D->Interpolate(cascade.pt(), mult);
purityOmegaErr = hPurityErrOmegaStd1D->Interpolate(cascade.pt());
purityXiErr = hPurityErrXiStd1D->Interpolate(cascade.pt());
}
if (purityOmega == 0) { // check for zero purity, do not apply if the case
purityOmega = 1.;
Expand Down Expand Up @@ -603,11 +609,11 @@ struct StrangeCascTrack {
}
}
if (doApplyGenCutsXi) {
if (!isValidCasc(collision, stdCasc, "xi"))
if (!isValidCascGen(collision, stdCasc) || !isValidCascSpec(cascade, "xi"))
passedAllSelsXi = false;
}
if (doApplyGenCutsOmega) {
if (!isValidCasc(collision, stdCasc, "omega"))
if (!isValidCascGen(collision, stdCasc) || !isValidCascSpec(cascade, "omega"))
passedAllSelsOmega = false;
}
// apply pt cuts
Expand Down
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