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[PWGLF] Add new thnsparse to fill frame dependent variable (#11069)
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‎PWGLF/Tasks/Strangeness/taskLambdaSpinCorr.cxx‎

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@@ -106,10 +106,19 @@ struct LfTaskLambdaSpinCorr {
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histos.add("hSparseLambdaLambda", "hSparseLambdaLambda", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseLambdaAntiLambda", "hSparseLambdaAntiLambda", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseAntiLambdaAntiLambda", "hSparseAntiLambdaAntiLambda", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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///////// along quantization axes///////////
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histos.add("hSparseLambdaLambdaQA", "hSparseLambdaLambdaQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseLambdaAntiLambdaQA", "hSparseLambdaAntiLambdaQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseAntiLambdaAntiLambdaQA", "hSparseAntiLambdaAntiLambdaQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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if (fillGEN) {
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histos.add("hSparseLambdaLambdaMC", "hSparseLambdaLambdaMC", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseLambdaAntiLambdaMC", "hSparseLambdaAntiLambdaMC", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseAntiLambdaAntiLambdaMC", "hSparseAntiLambdaAntiLambdaMC", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseLambdaLambdaMCQA", "hSparseLambdaLambdaMCQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseLambdaAntiLambdaMCQA", "hSparseLambdaAntiLambdaMCQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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histos.add("hSparseAntiLambdaAntiLambdaMCQA", "hSparseAntiLambdaAntiLambdaMCQA", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
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}
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}
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@@ -262,6 +271,58 @@ struct LfTaskLambdaSpinCorr {
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}
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}
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void fillHistograms2(bool tag1, bool tag2, bool tag3, bool tag4, const ROOT::Math::PxPyPzMVector& particlepair,
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const ROOT::Math::PxPyPzMVector& particle1, const ROOT::Math::PxPyPzMVector& particle2,
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const ROOT::Math::PxPyPzMVector& daughpart1, const ROOT::Math::PxPyPzMVector& daughpart2,
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double centrality, bool datatype)
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{
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ROOT::Math::Boost boostPairToCM{particlepair.BoostToCM()}; // boosting vector for pair CM
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// Boosting both Lambdas to Lambda-Lambda pair rest frame
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auto lambda1CM = boostPairToCM(particle1);
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auto lambda2CM = boostPairToCM(particle2);
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// Step 2: Boost Each Lambda to its Own Rest Frame
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ROOT::Math::Boost boostLambda1ToCM{lambda1CM.BoostToCM()};
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ROOT::Math::Boost boostLambda2ToCM{lambda2CM.BoostToCM()};
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ROOT::Math::XYZVector quantizationAxis = lambda1CM.Vect().Unit(); // Unit vector along Lambda1's direction in pair rest frame
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// Also boost the daughter protons to the same frame
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auto proton1pairCM = boostPairToCM(daughpart1); // proton1 to pair CM
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auto proton2pairCM = boostPairToCM(daughpart2); // proton2 to pair CM
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// Boost protons into their respective Lambda rest frames
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auto proton1LambdaRF = boostLambda1ToCM(proton1pairCM);
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auto proton2LambdaRF = boostLambda2ToCM(proton2pairCM);
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double cosTheta1 = proton1LambdaRF.Vect().Unit().Dot(quantizationAxis);
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double cosTheta2 = proton2LambdaRF.Vect().Unit().Dot(quantizationAxis);
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double cosThetaDiff = cosTheta1 * cosTheta2;
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auto lowptcut = 0.5;
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auto highptcut = 10.0;
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if (datatype == 1) {
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if (tag1 && tag3)
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histos.fill(HIST("hSparseLambdaLambdaMCQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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if (tag1 && tag4)
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histos.fill(HIST("hSparseLambdaAntiLambdaMCQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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if (tag2 && tag4)
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histos.fill(HIST("hSparseAntiLambdaAntiLambdaMCQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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} else {
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if (particle1.Pt() > lowptcut && particle1.Pt() < highptcut && particle2.Pt() > lowptcut && particle2.Pt() < highptcut) {
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if (tag1 && tag3)
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histos.fill(HIST("hSparseLambdaLambdaQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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if (tag1 && tag4)
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histos.fill(HIST("hSparseLambdaAntiLambdaQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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if (tag2 && tag4)
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histos.fill(HIST("hSparseAntiLambdaAntiLambdaQA"), particle1.M(), particle2.M(), cosThetaDiff, centrality, particlepair.M());
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}
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}
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}
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std::tuple<int, int, bool> getLambdaTags(const auto& v0, const auto& collision)
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{
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auto postrack = v0.template posTrack_as<AllTrackCandidates>();
@@ -444,6 +505,7 @@ struct LfTaskLambdaSpinCorr {
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tagb = 0;
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tagb2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, lambdaLambdapair, lambdadummy, lambdadummy2, proton, proton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, lambdaLambdapair, lambdadummy, lambdadummy2, proton, proton2, centrality, 0);
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}
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tagb2 = aLambdaTag2;
@@ -453,6 +515,7 @@ struct LfTaskLambdaSpinCorr {
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tagb = 0;
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taga2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, lambdaAntiLambdapair, lambdadummy, antiLambdadummy2, proton, antiProton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, lambdaAntiLambdapair, lambdadummy, antiLambdadummy2, proton, antiProton2, centrality, 0);
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}
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tagb = aLambdaTag;
@@ -463,6 +526,7 @@ struct LfTaskLambdaSpinCorr {
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taga = 0;
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taga2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, antiLambdaAntiLambdapair, antiLambdadummy, antiLambdadummy2, antiProton, antiProton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, antiLambdaAntiLambdapair, antiLambdadummy, antiLambdadummy2, antiProton, antiProton2, centrality, 0);
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}
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}
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}
@@ -565,6 +629,7 @@ struct LfTaskLambdaSpinCorr {
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tagb = 0;
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tagb2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, lambdaLambdapair, lambdadummy, lambdadummy2, proton, proton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, lambdaLambdapair, lambdadummy, lambdadummy2, proton, proton2, centrality, 0);
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}
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tagb2 = aLambdaTag2;
@@ -574,6 +639,7 @@ struct LfTaskLambdaSpinCorr {
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tagb = 0;
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taga2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, lambdaAntiLambdapair, lambdadummy, antiLambdadummy2, proton, antiProton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, lambdaAntiLambdapair, lambdadummy, antiLambdadummy2, proton, antiProton2, centrality, 0);
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}
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tagb = aLambdaTag;
@@ -584,6 +650,7 @@ struct LfTaskLambdaSpinCorr {
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taga = 0;
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taga2 = 0;
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fillHistograms(taga, tagb, taga2, tagb2, antiLambdaAntiLambdapair, antiLambdadummy, antiLambdadummy2, antiProton, antiProton2, centrality, 0);
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fillHistograms2(taga, tagb, taga2, tagb2, antiLambdaAntiLambdapair, antiLambdadummy, antiLambdadummy2, antiProton, antiProton2, centrality, 0);
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}
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}
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}
@@ -690,16 +757,19 @@ struct LfTaskLambdaSpinCorr {
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if (tagamc && taga2mc) {
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lambdaLambdapairmc = lambdadummymc + lambdadummy2mc;
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fillHistograms(tagamc, tagbmc, taga2mc, tagb2mc, lambdaLambdapairmc, lambdadummymc, lambdadummy2mc, protonmc, proton2mc, centrality, 1);
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fillHistograms2(tagamc, tagbmc, taga2mc, tagb2mc, lambdaLambdapairmc, lambdadummymc, lambdadummy2mc, protonmc, proton2mc, centrality, 1);
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}
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if (tagamc && tagb2mc) {
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lambdaAntiLambdapairmc = lambdadummymc + antiLambdadummy2mc;
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fillHistograms(tagamc, tagbmc, taga2mc, tagb2mc, lambdaAntiLambdapairmc, lambdadummymc, antiLambdadummy2mc, protonmc, antiProton2mc, centrality, 1);
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fillHistograms2(tagamc, tagbmc, taga2mc, tagb2mc, lambdaAntiLambdapairmc, lambdadummymc, antiLambdadummy2mc, protonmc, antiProton2mc, centrality, 1);
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}
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if (tagbmc && tagb2mc) {
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antiLambdaAntiLambdapairmc = antiLambdadummymc + antiLambdadummy2mc;
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fillHistograms(tagamc, tagbmc, taga2mc, tagb2mc, antiLambdaAntiLambdapairmc, antiLambdadummymc, antiLambdadummy2mc, antiProtonmc, antiProton2mc, centrality, 1);
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fillHistograms2(tagamc, tagbmc, taga2mc, tagb2mc, antiLambdaAntiLambdapairmc, antiLambdadummymc, antiLambdadummy2mc, antiProtonmc, antiProton2mc, centrality, 1);
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}
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}
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}

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