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skundu692 wants to merge 4 commits into from
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[PWGLF] Add new variables to control background #14738

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89b898c
Add process function for systematic
skundu692 Jan 30, 2026
4c54c6a
modify delta phi distribution
skundu692 Feb 1, 2026
8f029d6
Fix clang issue
skundu692 Feb 1, 2026
d137879
Add new variables
skundu692 Feb 1, 2026
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34 changes: 32 additions & 2 deletions PWGLF/Tasks/Resonances/doublephimeson.cxx
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Expand Up @@ -82,7 +82,10 @@ struct doublephimeson {
ConfigurableAxis configThnAxisNumPhi{"configThnAxisNumPhi", {101, -0.5, 100.5}, "cos #theta{*}"};
ConfigurableAxis configThnAxisDeltaPt{"configThnAxisDeltaPt", {100, 0.0, 1.0}, "delta pt"};
Configurable<float> maxDeltaMPhi{"maxDeltaMPhi", 0.01f, "Delta-m cut on the two phi masses: sqrt((m1-mPDG)^2 + (m2-mPDG)^2) < maxDeltaMPhi (GeV/c^2)"};

// --- NEW: steerable axes from JSON ---
ConfigurableAxis configThnAxisDeltaRPhi{"configThnAxisDeltaRPhi", {120, 0.0, 6.0}, "ΔR(φ,φ)"};
ConfigurableAxis configThnAxisZ{"configThnAxisZ", {100, 0.0, 1.0}, "z"};
ConfigurableAxis configThnAxisA{"configThnAxisA", {100, 0.0, 1.0}, "A"};
// Initialize the ananlysis task
void init(o2::framework::InitContext&)
{
Expand All @@ -109,10 +112,15 @@ struct doublephimeson {
const AxisSpec thnAxisCosTheta{configThnAxisCosTheta, "cos #theta"};
const AxisSpec thnAxisNumPhi{configThnAxisNumPhi, "Number of phi meson"};
const AxisSpec thnAxisPtCorr{configThnAxisPtCorr, "Pt Corr var"};

const AxisSpec thnAxisDeltaRPhi{configThnAxisDeltaRPhi, "#Delta R(#phi,#phi)"};
const AxisSpec thnAxisZ{configThnAxisZ, "z = p_{T1}/(p_{T1}+p_{T2})"};
const AxisSpec thnAxisA{configThnAxisA, "A = |p_{T1}-p_{T2}|/(p_{T1}+p_{T2})"};
histos.add("SEMassUnlike", "SEMassUnlike", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisDeltaR, thnAxisPt, thnAxisDeltaR, thnAxisInvMassDeltaPhi, thnAxisPtCorr});
// histos.add("SEMassLike", "SEMassLike", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisPt, thnAxisDeltaR, thnAxisInvMassPhi, thnAxisInvMassPhi, thnAxisNumPhi});
histos.add("MEMassUnlike", "MEMassUnlike", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisDeltaR, thnAxisPt, thnAxisDeltaR, thnAxisInvMassDeltaPhi, thnAxisPtCorr});
// --- NEW THnSparse storing (ΔRphi, z, A) WITHOUT applying cuts ---
histos.add("SEMassUnlike_DeltaRZA", "SEMassUnlike_DeltaRZA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisPt, thnAxisDeltaRPhi, thnAxisZ, thnAxisA, thnAxisInvMassDeltaPhi});
histos.add("MEMassUnlike_DeltaRZA", "MEMassUnlike_DeltaRZA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisPt, thnAxisDeltaRPhi, thnAxisZ, thnAxisA, thnAxisInvMassDeltaPhi});
}

// get kstar
Expand Down Expand Up @@ -1129,6 +1137,17 @@ struct doublephimeson {
dR,
dM,
ptcorr);

// --- NEW: compute z and A from phi candidates (no cuts) ---
const double pt1 = p1.Pt();
const double pt2 = p2.Pt();
const double ptsum = pt1 + pt2;
if (ptsum <= 0.0)
continue;
const double z = pt1 / ptsum;
const double A = std::abs(pt1 - pt2) / ptsum;
// --- Fill NEW THnSparse (no cuts) ---
histos.fill(HIST("SEMassUnlike_DeltaRZA"), M, pair.Pt(), pair.Pt() * dR, z, A, dM);
}
}
PROCESS_SWITCH(doublephimeson, processopti4, "Process Optimized same event", true);
Expand Down Expand Up @@ -1310,6 +1329,17 @@ struct doublephimeson {
dR, // ΔR(phi1, phi2)
dM, // Δm(phi)
ptcorr); // pT correlation

// --- NEW: compute z and A from phi candidates (no cuts) ---
const double pt1 = phi1.Pt();
const double pt2 = phi2.Pt();
const double ptsum = pt1 + pt2;
if (ptsum <= 0.0)
continue;
const double z = pt1 / ptsum;
const double A = std::abs(pt1 - pt2) / ptsum;
// --- Fill NEW THnSparse (no cuts) ---
histos.fill(HIST("MEMassUnlike_DeltaRZA"), pair.M(), pair.Pt(), pair.Pt() * dR, z, A, dM);
}
}
}
Expand Down
4 changes: 2 additions & 2 deletions PWGLF/Tasks/Resonances/f1protoncorrelation.cxx
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Expand Up @@ -943,12 +943,10 @@ struct f1protoncorrelation {
{
const float maxMomPi = maxMomentumPion;
const float maxMomK = maxMomentumKaon;

// const float pTofPiMin = momentumTOFPionMin;
// const float pTofPiMax = momentumTOFPionMax;
// const float pTofKMin = momentumTOFKaonMin;
// const float pTofKMax = momentumTOFKaonMax;

const float pTofP = momentumTOFProton;
const float pMaxP = momentumProtonMax;
const float pMinP = momentumProtonMin;
Expand Down Expand Up @@ -1075,10 +1073,12 @@ struct f1protoncorrelation {
{
const float maxMomPi = maxMomentumPion;
const float maxMomK = maxMomentumKaon;

// const float pTofPiMin = momentumTOFPionMin;
// const float pTofPiMax = momentumTOFPionMax;
// const float pTofKMin = momentumTOFKaonMin;
// const float pTofKMax = momentumTOFKaonMax;

const float pTofP = momentumTOFProton;
const float pMaxP = momentumProtonMax;
const float pMinP = momentumProtonMin;
Expand Down
16 changes: 8 additions & 8 deletions PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx
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Expand Up @@ -146,8 +146,8 @@ struct lambdaspincorrderived {
histos.add("hPtYSame", "hPtYSame", kTH2F, {{100, 0.0, 10.0}, {200, -1.0, 1.0}});
histos.add("hPtYMix", "hPtYMix", kTH2F, {{100, 0.0, 10.0}, {200, -1.0, 1.0}});
histos.add("hCentrality", "Centrality distribution", kTH1F, {{configThnAxisCentrality}});
histos.add("deltaPhiSame", "deltaPhiSame", HistType::kTH1D, {{72, 0.0, 2.0 * TMath::Pi()}}, true);
histos.add("deltaPhiMix", "deltaPhiMix", HistType::kTH1D, {{72, 0.0, 2.0 * TMath::Pi()}}, true);
histos.add("deltaPhiSame", "deltaPhiSame", HistType::kTH1D, {{72, -TMath::Pi(), TMath::Pi()}}, true);
histos.add("deltaPhiMix", "deltaPhiMix", HistType::kTH1D, {{72, -TMath::Pi(), TMath::Pi()}}, true);
histos.add("ptCent", "ptCent", HistType::kTH2D, {{100, 0.0, 10.0}, {8, 0.0, 80.0}}, true);
histos.add("etaCent", "etaCent", HistType::kTH2D, {{32, -0.8, 0.8}, {8, 0.0, 80.0}}, true);

Expand Down Expand Up @@ -377,7 +377,7 @@ struct lambdaspincorrderived {
double deta2 = particle2.Eta();

double deta_pair = std::abs(deta1 - deta2);
double dphi_pair = RecoDecay::constrainAngle(particle1.Phi() - particle2.Phi(), 0.0F, harmonicDphi);
double dphi_pair = RecoDecay::constrainAngle(particle1.Phi() - particle2.Phi(), -TMath::Pi(), harmonicDphi);

double deltaR = TMath::Sqrt(deta_pair * deta_pair + dphi_pair * dphi_pair);
double deltaRap = std::abs(particle1.Rapidity() - particle2.Rapidity());
Expand Down Expand Up @@ -536,7 +536,7 @@ struct lambdaspincorrderived {
}
proton2 = ROOT::Math::PtEtaPhiMVector(v02.protonPt(), v02.protonEta(), v02.protonPhi(), o2::constants::physics::MassProton);
lambda2 = ROOT::Math::PtEtaPhiMVector(v02.lambdaPt(), v02.lambdaEta(), v02.lambdaPhi(), v02.lambdaMass());
histos.fill(HIST("deltaPhiSame"), RecoDecay::constrainAngle(v0.lambdaPhi() - v02.lambdaPhi(), 0.0F, harmonicDphi));
histos.fill(HIST("deltaPhiSame"), RecoDecay::constrainAngle(v0.lambdaPhi() - v02.lambdaPhi(), -TMath::Pi(), harmonicDphi));
if (v0.v0Status() == 0 && v02.v0Status() == 0) {
fillHistograms(0, 0, lambda, lambda2, proton, proton2, 0, 1.0);
}
Expand Down Expand Up @@ -608,7 +608,7 @@ struct lambdaspincorrderived {
lambda = ROOT::Math::PtEtaPhiMVector(t3.lambdaPt(), t3.lambdaEta(), t3.lambdaPhi(), t3.lambdaMass());
proton2 = ROOT::Math::PtEtaPhiMVector(t2.protonPt(), t2.protonEta(), t2.protonPhi(), o2::constants::physics::MassProton);
lambda2 = ROOT::Math::PtEtaPhiMVector(t2.lambdaPt(), t2.lambdaEta(), t2.lambdaPhi(), t2.lambdaMass());
histos.fill(HIST("deltaPhiMix"), RecoDecay::constrainAngle(t3.lambdaPhi() - t2.lambdaPhi(), 0.0F, harmonicDphi));
histos.fill(HIST("deltaPhiMix"), RecoDecay::constrainAngle(t3.lambdaPhi() - t2.lambdaPhi(), -TMath::Pi(), harmonicDphi));
if (t3.v0Status() == 0 && t2.v0Status() == 0) {
fillHistograms(0, 0, lambda, lambda2, proton, proton2, 1, 1.0);
}
Expand Down Expand Up @@ -686,7 +686,7 @@ struct lambdaspincorrderived {
proton2 = ROOT::Math::PtEtaPhiMVector(t2.protonPt(), t2.protonEta(), t2.protonPhi(), o2::constants::physics::MassProton);
lambda2 = ROOT::Math::PtEtaPhiMVector(t2.lambdaPt(), t2.lambdaEta(), t2.lambdaPhi(), t2.lambdaMass());

float dPhi = std::fabs(RecoDecay::constrainAngle(lambda.Phi(), 0.0F, harmonic) - RecoDecay::constrainAngle(lambda2.Phi(), 0.0F, harmonic));
float dPhi = RecoDecay::constrainAngle(RecoDecay::constrainAngle(lambda.Phi(), 0.0F, harmonic) - RecoDecay::constrainAngle(lambda2.Phi(), 0.0, harmonic), -TMath::Pi(), harmonicDphi);
histos.fill(HIST("deltaPhiMix"), dPhi, invN);

if (t3.v0Status() == 0 && t2.v0Status() == 0) {
Expand Down Expand Up @@ -796,7 +796,7 @@ struct lambdaspincorrderived {
auto proton2 = ROOT::Math::PtEtaPhiMVector(t2.protonPt(), t2.protonEta(), t2.protonPhi(), o2::constants::physics::MassProton);
auto lambda2 = ROOT::Math::PtEtaPhiMVector(t2.lambdaPt(), t2.lambdaEta(), t2.lambdaPhi(), t2.lambdaMass());

const float dPhi = std::fabs(RecoDecay::constrainAngle(lambda.Phi(), 0.0F, harmonic) - RecoDecay::constrainAngle(lambda2.Phi(), 0.0F, harmonic));
const float dPhi = RecoDecay::constrainAngle(RecoDecay::constrainAngle(lambda.Phi(), 0.0F, harmonic) - RecoDecay::constrainAngle(lambda2.Phi(), 0.0F, harmonic), -TMath::Pi(), harmonicDphi);
histos.fill(HIST("deltaPhiMix"), dPhi, wBase);
fillHistograms(tX.v0Status(), t2.v0Status(), lambda, lambda2, proton, proton2, 1, wBase);
}
Expand Down Expand Up @@ -1030,7 +1030,7 @@ struct lambdaspincorrderived {
auto proton2 = ROOT::Math::PtEtaPhiMVector(t2.protonPt(), t2.protonEta(), t2.protonPhi(), o2::constants::physics::MassProton);
auto lambda2 = ROOT::Math::PtEtaPhiMVector(t2.lambdaPt(), t2.lambdaEta(), t2.lambdaPhi(), t2.lambdaMass());

const float dPhi = std::fabs(RecoDecay::constrainAngle(lambda.Phi() - lambda2.Phi(), 0.0F, harmonicDphi));
const float dPhi = RecoDecay::constrainAngle(RecoDecay::constrainAngle(lambda.Phi(), 0.0F, harmonic) - RecoDecay::constrainAngle(lambda2.Phi(), 0.0F, harmonic), -TMath::Pi(), harmonicDphi);
histos.fill(HIST("deltaPhiMix"), dPhi, wBase);
fillHistograms(tX.v0Status(), t2.v0Status(), lambda, lambda2, proton, proton2, 1, wBase);
}
Expand Down
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