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[PWGLF] Modify azimuthal distribution #11861

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Merged
skundu692 merged 11 commits into from
Jul 1, 2025
Merged

[PWGLF] Modify azimuthal distribution #11861

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864e719
add new expression for angular correlation
skundu692 Jun 8, 2025
e13aea9
Fix clang formating
skundu692 Jun 9, 2025
7b649c0
Add new process function to study derived data
skundu692 Jun 11, 2025
7539f7e
Fix
skundu692 Jun 11, 2025
07e4a3f
Fix clang and whitespace error
skundu692 Jun 18, 2025
5c07ec4
Fix indexing issue in derived data
skundu692 Jun 19, 2025
74424e4
fix linter error
skundu692 Jun 19, 2025
1f2ad38
Improve event mixing condition
skundu692 Jun 30, 2025
18021ac
Add kinematic histogram
skundu692 Jun 30, 2025
af5b951
Modify azimuthal distribution
skundu692 Jul 1, 2025
5485dd5
fix clang format
skundu692 Jul 1, 2025
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37 changes: 31 additions & 6 deletions PWGLF/Tasks/Strangeness/lambdaspincorrderived.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -29,12 +29,12 @@
#include <Math/GenVector/Boost.h>
#include <Math/Vector3D.h>
#include <Math/Vector4D.h>
#include <TLorentzVector.h>

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[root/lorentz-vector] 

Do not use the TLorentzVector legacy class. Use std::array with RecoDecay methods or the ROOT::Math::LorentzVector template instead.
#include <TMath.h>

#include <fairlogger/Logger.h>

#include <iostream>

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[include-iostream] 

Do not include iostream. Use O2 logging instead.
#include <iterator>
#include <string>
#include <vector>
Expand Down Expand Up @@ -81,6 +81,18 @@
void init(o2::framework::InitContext&)
{
histos.add("hCentrality", "Centrality distribution", kTH1F, {{configThnAxisCentrality}});
histos.add("deltaPhiSame", "deltaPhiSame", HistType::kTH1D, {{72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
histos.add("deltaPhiMix", "deltaPhiMix", HistType::kTH1D, {{72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
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);

histos.add("hLambdaSameForLL", "hLambdaSameForLL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
histos.add("hLambdaSameForLAL", "hLambdaSameForLAL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
histos.add("hAntiLambdaSameForALAL", "hAntiLambdaSameForALAL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.

histos.add("hLambdaMixForLL", "hLambdaMixForLL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
histos.add("hLambdaMixForLAL", "hLambdaMixForLAL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
histos.add("hAntiLambdaMixForALAL", "hAntiLambdaMixForALAL", HistType::kTH3D, {{50, 0.0, 5.0}, {32, -0.8, 0.8}, {72, 0.0, 2.0 * TMath::Pi()}}, true);

histos.add("hSparseLambdaLambda", "hSparseLambdaLambda", HistType::kTHnSparseF, {configThnAxisInvMass, configThnAxisInvMass, configThnAxisPol, configThnAxisCentrality, configThnAxisR}, true);
histos.add("hSparseLambdaAntiLambda", "hSparseLambdaAntiLambda", HistType::kTHnSparseF, {configThnAxisInvMass, configThnAxisInvMass, configThnAxisPol, configThnAxisCentrality, configThnAxisR}, true);
Expand Down Expand Up @@ -127,13 +139,16 @@
template <typename T1, typename T2>
bool checkKinematics(T1 const& candidate1, T2 const& candidate2)
{
if (candidate1.v0Status() != candidate2.v0Status()) {
return false;
}
if (std::abs(candidate1.lambdaPt() - candidate2.lambdaPt()) > ptMix) {
return false;
}
if (std::abs(candidate1.lambdaEta() - candidate2.lambdaEta()) > etaMix) {
return false;
}
if (std::abs(candidate1.lambdaPhi() - candidate2.lambdaPhi()) > phiMix) {
if (std::abs(RecoDecay::constrainAngle(candidate1.lambdaPhi(), 0.0F) - RecoDecay::constrainAngle(candidate2.lambdaPhi(), 0.0F)) > phiMix) {
return false;
}
if (std::abs(candidate1.lambdaMass() - candidate2.lambdaMass()) > massMix) {
Expand Down Expand Up @@ -179,25 +194,31 @@

auto cosThetaDiff = -999.0;
cosThetaDiff = proton1LambdaRF.Vect().Unit().Dot(proton2LambdaRF.Vect().Unit());
double deltaPhi = RecoDecay::constrainAngle(particle1Dummy.Phi() - particle2Dummy.Phi(), 0.0F, 2U);
double deltaPhi = std::abs(RecoDecay::constrainAngle(particle1Dummy.Phi(), 0.0F) - RecoDecay::constrainAngle(particle2Dummy.Phi(), 0.0F));
double deltaEta = particle1Dummy.Eta() - particle2Dummy.Eta();
double deltaR = TMath::Sqrt(deltaEta * deltaEta + deltaPhi * deltaPhi);

if (datatype == 0) {
if (tag1 == 0 && tag2 == 0) {
histos.fill(HIST("hSparseLambdaLambda"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hLambdaSameForLL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));
} else if ((tag1 == 0 && tag2 == 1) || (tag1 == 1 && tag2 == 0)) {
histos.fill(HIST("hSparseLambdaAntiLambda"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hLambdaSameForLAL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
} else if (tag1 == 1 && tag2 == 1) {
histos.fill(HIST("hSparseAntiLambdaAntiLambda"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hAntiLambdaSameForALAL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));
}
} else if (datatype == 1) {
if (tag1 == 0 && tag2 == 0) {
histos.fill(HIST("hSparseLambdaLambdaMixed"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hLambdaMixForLL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));
} else if ((tag1 == 0 && tag2 == 1) || (tag1 == 1 && tag2 == 0)) {
histos.fill(HIST("hSparseLambdaAntiLambdaMixed"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hLambdaMixForLAL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));
} else if (tag1 == 1 && tag2 == 1) {
histos.fill(HIST("hSparseAntiLambdaAntiLambdaMixed"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
histos.fill(HIST("hAntiLambdaMixForALAL"), particle1.Pt(), particle1.Eta(), RecoDecay::constrainAngle(particle1.Phi(), 0.0F));
}
}
}
Expand All @@ -218,6 +239,8 @@
if (!selectionV0(v0)) {
continue;
}
histos.fill(HIST("ptCent"), v0.lambdaPt(), centrality);
histos.fill(HIST("etaCent"), v0.lambdaEta(), centrality);
proton = ROOT::Math::PtEtaPhiMVector(v0.protonPt(), v0.protonEta(), v0.protonPhi(), o2::constants::physics::MassProton);
lambda = ROOT::Math::PtEtaPhiMVector(v0.lambdaPt(), v0.lambdaEta(), v0.lambdaPhi(), v0.lambdaMass());
for (const auto& v02 : V0s) {
Expand All @@ -235,6 +258,7 @@
}
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"), std::abs(RecoDecay::constrainAngle(v0.lambdaPhi(), 0.0F) - RecoDecay::constrainAngle(v02.lambdaPhi(), 0.0F)));
if (v0.v0Status() == 0 && v02.v0Status() == 0) {
fillHistograms(0, 0, lambda, lambda2, proton, proton2, centrality, 0);
}
Expand Down Expand Up @@ -264,9 +288,9 @@
for (auto& [collision1, collision2] : selfCombinations(colBinning, nEvtMixing, -1, collisions, collisions)) {
// LOGF(info, "Mixed event collisions: (%d, %d)", collision1.index(), collision2.index());
auto centrality = collision1.cent();
auto groupV01 = V0s.sliceBy(tracksPerCollisionV0, collision1.globalIndex());
auto groupV02 = V0s.sliceBy(tracksPerCollisionV0, collision1.globalIndex());
auto groupV03 = V0s.sliceBy(tracksPerCollisionV0, collision2.globalIndex());
auto groupV01 = V0s.sliceBy(tracksPerCollisionV0, collision1.index());
auto groupV02 = V0s.sliceBy(tracksPerCollisionV0, collision1.index());
auto groupV03 = V0s.sliceBy(tracksPerCollisionV0, collision2.index());
auto collNewIndex = collision1.index();
// LOGF(info, "Mixed event collisions: (%d, %d)", collNewIndex, collOldIndex);
if (collOldIndex != collNewIndex) {
Expand Down Expand Up @@ -306,6 +330,7 @@
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"), std::abs(RecoDecay::constrainAngle(t3.lambdaPhi(), 0.0F) - RecoDecay::constrainAngle(t2.lambdaPhi(), 0.0F)));
if (t3.v0Status() == 0 && t2.v0Status() == 0) {
fillHistograms(0, 0, lambda, lambda2, proton, proton2, centrality, 1);
}
Expand All @@ -322,7 +347,7 @@
} // replacement track pair
} // collision pair
}
PROCESS_SWITCH(lambdaspincorrderived, processME, "Process data ME", true);
PROCESS_SWITCH(lambdaspincorrderived, processME, "Process data ME", false);
};
WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
{
Expand Down
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