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[PWGLF] TVX-like selection in MC #14205

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Merged
maciacco merged 1 commit into from
Dec 13, 2025
Merged

[PWGLF] TVX-like selection in MC #14205

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39 changes: 36 additions & 3 deletions PWGLF/Tasks/Nuspex/piKpRAA.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,10 @@ struct PiKpRAA {
static constexpr float kMaxdEdxMIP{60.0f};
static constexpr float kMindEdxMIPPlateau{70.0f};
static constexpr float kMaxdEdxMIPPlateau{90.0f};
static constexpr float kMinFT0A{3.5f};
static constexpr float kMaxFT0A{4.9f};
static constexpr float kMinFT0C{-3.3f};
static constexpr float kMaxFT0C{-2.1f};

static constexpr float kLowEta[kNEtaHists] = {-0.8, -0.6, -0.4, -0.2, 0.0, 0.2, 0.4, 0.6};
static constexpr float kHighEta[kNEtaHists] = {-0.6, -0.4, -0.2, 0.0, 0.2, 0.4, 0.6, 0.8};
Expand Down Expand Up @@ -203,6 +207,7 @@ struct PiKpRAA {
Configurable<bool> isT0Ccent{"isT0Ccent", true, "Use T0C-based centrality?"};
Configurable<bool> isZvtxPosSel{"isZvtxPosSel", true, "Zvtx position selection?"};
Configurable<bool> isZvtxPosSelMC{"isZvtxPosSelMC", true, "Zvtx position selection for MC events?"};
Configurable<bool> selTVXMC{"selTVXMC", true, "apply TVX selection in MC?"};
Configurable<bool> selINELgt0{"selINELgt0", true, "Select INEL > 0?"};
Configurable<bool> isApplyFT0CbasedOccupancy{"isApplyFT0CbasedOccupancy", false, "T0C Occu cut"};
Configurable<bool> applyNchSel{"applyNchSel", false, "Use mid-rapidity-based Nch selection"};
Expand Down Expand Up @@ -523,6 +528,9 @@ struct PiKpRAA {

if (doprocessSim) {

// MC events passing the TVX requirement
registry.add("NchMCcentVsTVX", ";Passed(=1.5) NOT Passed(=0.5);", kTH2F, {{{nBinsNch, minNch, maxNch}, {2, 0, 2}}});

registry.add("NumberOfRecoCollisions", "Number of times Gen. Coll.are reconstructed;N;Entries", kTH1F, {{10, -0.5, 9.5}});

// Pt resolution
Expand Down Expand Up @@ -1390,11 +1398,10 @@ struct PiKpRAA {
// By counting number of primary charged particles in |eta| < 1
//---------------------------
int nChMC{0};
int nChFT0A{0};
int nChFT0C{0};
for (const auto& particle : mcParticles) {

if (std::abs(particle.eta()) > kOne)
continue;

auto charge{0.};
// Get the MC particle
const auto* pdgParticle = pdg->GetParticle(particle.pdgCode());
Expand All @@ -1412,9 +1419,35 @@ struct PiKpRAA {
if (!particle.isPhysicalPrimary())
continue;

const float eta{particle.eta()};

// TVX requirement
if (eta > kMinFT0A && eta < kMaxFT0A) {
nChFT0A++;
}

if (eta > kMinFT0C && eta < kMaxFT0C) {
nChFT0C++;
}

// INEL > 0
if (std::abs(eta) > kOne)
continue;

nChMC++;
}

//---------------------------
// Only events with at least one charged particle in the FT0A and FT0C acceptances
//---------------------------
if (selTVXMC) {
if (!(nChFT0A > kZeroInt && nChFT0C > kZeroInt)) {
registry.fill(HIST("NchMCcentVsTVX"), nChMC, 0.5);
return;
}
registry.fill(HIST("NchMCcentVsTVX"), nChMC, 1.5);
}

//---------------------------
// Only MC events with |Vtx Z| < 10 cm
//---------------------------
Expand Down
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