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[PWGLF] Add BC table based centrality #15657

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Merged
abmodak merged 2 commits into from
Apr 5, 2026
+33 −0
Merged

[PWGLF] Add BC table based centrality #15657

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45e7555
Add BC table based centrality
abmodak Apr 5, 2026
d53e0b9
Fix table combinations
abmodak Apr 5, 2026
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33 changes: 33 additions & 0 deletions PWGLF/Tasks/GlobalEventProperties/heavyionMultiplicity.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -208,6 +208,10 @@
Configurable<bool> isApplyTVX{"isApplyTVX", false, "Enable TVX trigger sel"};
Configurable<bool> isApplyExtraPhiCut{"isApplyExtraPhiCut", false, "Enable extra phi cut"};

Configurable<bool> selectCollidingBCs{"selectCollidingBCs", true, "BC analysis: select colliding BCs"};
Configurable<bool> selectTVX{"selectTVX", true, "BC analysis: select TVX"};
Configurable<bool> selectFV0OrA{"selectFV0OrA", true, "BC analysis: select FV0OrA"};

void init(InitContext const&)
{
AxisSpec axisMult = {multHistBin, "Mult", "MultAxis"};
Expand Down Expand Up @@ -357,6 +361,18 @@
histos.add("hRecMCdndeta", "hRecMCdndeta", kTHnSparseD, {axisVtxZ, centAxis, axisOccupancy, axisEta, axisPhi, axisRecTrkType}, false);
histos.add("etaResolution", "etaResolution", kTH2D, {axisEta, axisDeltaEta});
}

if (doprocessBcData) {
histos.add("BcHist", "BcHist", kTH1D, {axisEvent}, false);
auto hstat = histos.get<TH1>(HIST("BcHist"));
auto* x = hstat->GetXaxis();
x->SetBinLabel(1, "All BCs");
x->SetBinLabel(2, "Colliding BCs");
x->SetBinLabel(3, "TVX");
x->SetBinLabel(4, "FV0OrA");
histos.add("BcCentFT0CHist", "BcCentFT0CHist", kTH1D, {axisCent}, false);
histos.add("BcCentFT0MHist", "BcCentFT0MHist", kTH1D, {axisCent}, false);
}
}

template <typename CheckCol>
Expand Down Expand Up @@ -735,10 +751,10 @@
if (std::abs(particle.eta()) < 1.0) {
multBarrelEta10++;
}
if (-3.3 < particle.eta() && particle.eta() < -2.1) {

Check failure on line 754 in PWGLF/Tasks/GlobalEventProperties/heavyionMultiplicity.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
multFT0C++;
}
if (3.5 < particle.eta() && particle.eta() < 4.9) {

Check failure on line 757 in PWGLF/Tasks/GlobalEventProperties/heavyionMultiplicity.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
multFT0A++;
}
}
Expand Down Expand Up @@ -971,6 +987,22 @@
} // collision loop
}

void processBcData(soa::Join<aod::BC2Mults, aod::MultBCs, aod::BCCentFT0Cs, aod::BCCentFT0Ms>::iterator const& multbc)
{
histos.fill(HIST("BcHist"), 1); // all BCs
if (selectCollidingBCs && !multbc.multCollidingBC())
return;
histos.fill(HIST("BcHist"), 2); // colliding
if (selectTVX && !multbc.multTVX())
return;
histos.fill(HIST("BcHist"), 3); // TVX
if (selectFV0OrA && !multbc.multFV0OrA())
return;
histos.fill(HIST("BcHist"), 4); // FV0OrA
histos.fill(HIST("BcCentFT0CHist"), multbc.centFT0C());
histos.fill(HIST("BcCentFT0MHist"), multbc.centFT0M());
}

PROCESS_SWITCH(HeavyionMultiplicity, processData, "process data CentFT0C", false);
PROCESS_SWITCH(HeavyionMultiplicity, processCorrelation, "do correlation study in data", false);
PROCESS_SWITCH(HeavyionMultiplicity, processMonteCarlo, "process MC CentFT0C", false);
Expand All @@ -979,6 +1011,7 @@
PROCESS_SWITCH(HeavyionMultiplicity, processGen, "process pure MC gen", false);
PROCESS_SWITCH(HeavyionMultiplicity, processEvtLossSigLossMC, "process Signal Loss, Event Loss", false);
PROCESS_SWITCH(HeavyionMultiplicity, processMCeff, "process extra efficiency function", false);
PROCESS_SWITCH(HeavyionMultiplicity, processBcData, "process BC Centrality", false);
};

WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
Expand Down
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