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[PWGLF] Add histogram for truth-tagged reco invariant mass distribution #13746

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Merged
smaff92 merged 6 commits into from
Nov 11, 2025
Merged

[PWGLF] Add histogram for truth-tagged reco invariant mass distribution #13746

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30da096
Add histogram for truth tagged reco invariant mass distribution
SuJeong-Ji Nov 9, 2025
40cc48d
Please consider the following formatting changes
alibuild Nov 9, 2025
8207f6b
Merge pull request #27 from alibuild/alibot-cleanup-13746
SuJeong-Ji Nov 9, 2025
18b60cf
test for o2 build issue
SuJeong-Ji Nov 10, 2025
87908f6
Please consider the following formatting changes
alibuild Nov 10, 2025
ee17a77
Merge pull request #28 from alibuild/alibot-cleanup-13746
SuJeong-Ji Nov 10, 2025
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25 changes: 17 additions & 8 deletions PWGLF/Tasks/Resonances/chk892pp.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -35,8 +35,7 @@
#include "Common/DataModel/Centrality.h"
#include "Common/DataModel/EventSelection.h"
#include "Common/DataModel/Multiplicity.h"
#include "Common/DataModel/PIDResponseTOF.h"
#include "Common/DataModel/PIDResponseTPC.h"
#include "Common/DataModel/PIDResponse.h"
#include "Common/DataModel/TrackSelectionTables.h"

#include "CCDB/BasicCCDBManager.h"
Expand Down Expand Up @@ -195,7 +194,7 @@ struct Chk892pp {
Configurable<float> cfgMaxTPCnSigmaPion{"cfgMaxTPCnSigmaPion", 3.0, "TPC nSigma cut for Pion"}; // TPC
Configurable<float> cfgMaxTOFnSigmaPion{"cfgMaxTOFnSigmaPion", 3.0, "TOF nSigma cut for Pion"}; // TOF
Configurable<float> cfgNsigmaCutCombinedPion{"cfgNsigmaCutCombinedPion", -999, "Combined nSigma cut for Pion"}; // Combined
Configurable<bool> cfgTOFVeto{"cfgTOFVeto", true, "TOF Veto, if false, TOF is nessessary for PID selection"}; // TOF Veto
Configurable<bool> cfgTOFVeto{"cfgTOFVeto", false, "TOF Veto, if false, TOF is nessessary for PID selection"}; // TOF Veto
Configurable<float> cfgTOFMinPt{"cfgTOFMinPt", 0.6, "Minimum TOF pT cut for Pion"}; // TOF pT cut
} PIDCuts;

Expand Down Expand Up @@ -463,6 +462,9 @@ struct Chk892pp {
hstep->GetXaxis()->SetBinLabel(2, "zvtx");
hstep->GetXaxis()->SetBinLabel(3, "INEL>0");
hstep->GetXaxis()->SetBinLabel(4, "Assoc with reco coll");

histos.add("MCReco/hInvmass_Kstar_true", "MC-reco truth-tagged chK(892)", HistType::kTHnSparseD, {centAxis, ptAxis, invMassAxisReso});
histos.add("MCReco/hInvmass_Kstar_bkg", "MC-reco residual background chK(892)", HistType::kTHnSparseD, {centAxis, ptAxis, invMassAxisReso});
}

ccdb->setURL(CCDBConfig.cfgURL);
Expand Down Expand Up @@ -967,16 +969,23 @@ struct Chk892pp {
lDecayDaughter_bach = LorentzVectorSetXYZM(bTrack.px(), bTrack.py(), bTrack.pz(), MassPionCharged);
lResoKstar = lResoSecondary + lDecayDaughter_bach;

double ptgen = 0, ygen = 0;
if (!matchRecoToTruthKstar(v0, bTrack, ptgen, ygen))
continue;

const double ptreco = lResoKstar.Pt();
const double yreco = lResoKstar.Rapidity();

if (std::abs(yreco) > KstarCuts.cfgKstarMaxRap)
continue;
histos.fill(HIST("EffKstar/recoKstar"), ptreco, lCentrality);

double ptgen = 0, ygen = 0;
const bool isTrue = matchRecoToTruthKstar(v0, bTrack, ptgen, ygen);

if (isTrue) {

histos.fill(HIST("EffKstar/recoKstar"), ptreco, lCentrality);
histos.fill(HIST("MCReco/hInvmass_Kstar_true"), lCentrality, ptreco, lResoKstar.M());

} else {
histos.fill(HIST("MCReco/hInvmass_Kstar_bkg"), lCentrality, ptreco, lResoKstar.M());
}
}
}
} // effKstarProcessReco
Expand Down
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