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[PWGLF] Lambda local polarization induced by jet in pp collision 13.6 TeV #11390

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[PWGLF] Lambda local polarization induced by jet in pp collision 13.6 TeV #11390

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70 changes: 67 additions & 3 deletions PWGLF/Tasks/Strangeness/lambdaJetpolarization.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
///

/// \author Youpeng Su (yousu@cern.ch)
#include <iostream>

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[include-iostream] 

Do not include iostream. Use O2 logging instead.
#include <string>
#include <vector>
#include <cmath>
Expand All @@ -27,6 +27,7 @@
#include <TTree.h>
#include <TFile.h>
#include <TMatrixD.h>
#include "TProfile2D.h"
#include "PWGLF/DataModel/lambdaJetpolarization.h"

#include <fastjet/ClusterSequence.hh>
Expand Down Expand Up @@ -59,7 +60,6 @@
Configurable<float> etaMin{"etaMin", -0.9f, "eta min"};
Configurable<float> etaMax{"etaMax", +0.9f, "eta max"};
Configurable<double> deltaEtaEdge{"deltaEtaEdge", 0.00, "eta gap from the edge"};
Configurable<double> minJetPt{"minJetPt", 10.0, "Minimum pt of the jet"};
// track parameters
Configurable<float> minITSnCls{"minITSnCls", 4.0f, "min number of ITS clusters"};
Configurable<float> minTPCnClsFound{"minTPCnClsFound", 80.0f, "min number of found TPC clusters"};
Expand Down Expand Up @@ -113,6 +113,8 @@
Configurable<float> v0accLambda{"v0accLambda", 0.075, "V0 acc Lambda"};
Configurable<bool> ifinitpasslambda{"ifinitpasslambda", 1, "ifinitpasslambda"};
Configurable<bool> ifpasslambda{"passedLambdaSelection", 0, "passedLambdaSelection"};
Configurable<float> paramArmenterosCut{"paramArmenterosCut", 0.2, "parameter Armenteros Cut"};
Configurable<bool> doArmenterosCut{"doArmenterosCut", 0, "do Armenteros Cut"};

// Jet background subtraction
JetBkgSubUtils backgroundSub;
Expand All @@ -131,6 +133,8 @@
const AxisSpec ptAxis{100, 0.0f, 10.0f, "#it{p}_{T} (GeV/#it{c})"};
const AxisSpec invMassLambdaAxis{200, 1.09, 1.14, "m_{p#pi} (GeV/#it{c}^{2})"};

ConfigurableAxis TProfile2DaxisPt{"#it{p}_{T} (GeV/#it{c})", {VARIABLE_WIDTH, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 10.0}, "pt axis for histograms"};

registry.add("hMassLambda", "hMassLambda", {HistType::kTH1F, {{200, 0.9f, 1.2f}}});
registry.add("V0pTInLab", "V0pTInLab", kTH1F, {axisPT});
registry.add("hMassVsPtLambda", "hMassVsPtLambda", {HistType::kTH2F, {{100, 0.0f, 10.0f}, {200, 1.016f, 1.216f}}});
Expand Down Expand Up @@ -245,6 +249,17 @@
registryData.add("hLambdaPhiandSinPhi", "hLambdaPhiandSinPhi", kTH2F, {{200, -TMath::Pi() / 2, TMath::Pi() / 2}, {200, -1, 1}});
registryData.add("V0LambdaprotonPhi", "V0LambdaprotonPhi", {HistType::kTH1F, {{200, -TMath::Pi() / 2, TMath::Pi() / 2}}});

registryData.add("profileAntiLambda", "Invariant Mass vs sin(phi)", {HistType::kTProfile, {{200, 0.9, 1.2}}});
registryData.add("hAntiLambdamassandSinPhi", "hAntiLambdaPhiandSinPhi", kTH2F, {{200, -TMath::Pi() / 2, TMath::Pi() / 2}, {200, -1, 1}});

registryData.add("TProfile2DLambdaPtMassSinPhi", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});
registryData.add("TProfile2DAntiLambdaPtMassSinPhi", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});
registryData.add("TProfile2DLambdaPtMassSintheta", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});
registryData.add("TProfile2DAntiLambdaPtMassSintheta", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});

registryData.add("TProfile2DLambdaPtMassCosSquareTheta", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});
registryData.add("TProfile2DAntiLambdaPtMassCosSquareTheta", "", kTProfile2D, {invMassLambdaAxis, TProfile2DaxisPt});

registryData.add("hNEvents", "hNEvents", {HistType::kTH1I, {{10, 0.f, 10.f}}});
registryData.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(1, "all");
registryData.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(2, "sel8");
Expand Down Expand Up @@ -301,8 +316,8 @@

TMatrixD LorentzTransInV0frame(double ELambda, double Lambdapx, double Lambdapy, double Lambdapz)
{
double PLambda = sqrt(Lambdapx * Lambdapx + Lambdapy * Lambdapy + Lambdapz * Lambdapz);

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[std-prefix] 

Use std:: prefix for names from the std namespace.
double LambdaMass = sqrt(ELambda * ELambda - PLambda * PLambda);

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[std-prefix] 

Use std:: prefix for names from the std namespace.
double Alpha = 1 / (LambdaMass * (ELambda + LambdaMass));
TMatrixD matrixLabToLambda(4, 4);
matrixLabToLambda(0, 0) = ELambda / LambdaMass;
Expand Down Expand Up @@ -369,10 +384,10 @@
registry.fill(HIST("V0protonpxInLab"), candidate.v0protonpx());
registry.fill(HIST("V0protonpyInLab"), candidate.v0protonpy());
registry.fill(HIST("V0protonpzInLab"), candidate.v0protonpz());
double protonsinPhiInLab = candidate.v0protonpy() / sqrt(candidate.v0protonpx() * candidate.v0protonpx() + candidate.v0protonpy() * candidate.v0protonpy());

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[std-prefix] 

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registry.fill(HIST("V0protonphiInLab"), protonsinPhiInLab);
double PLambda = sqrt(candidate.v0px() * candidate.v0px() + candidate.v0py() * candidate.v0py() + candidate.v0pz() * candidate.v0pz());

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[std-prefix] 

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double ELambda = sqrt(candidate.v0Lambdamass() * candidate.v0Lambdamass() + PLambda * PLambda);

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[std-prefix] 

Use std:: prefix for names from the std namespace.
TMatrixD pLabV0(4, 1);
pLabV0(0, 0) = ELambda;
pLabV0(1, 0) = candidate.v0px();
Expand All @@ -385,17 +400,17 @@
registry.fill(HIST("V0pzInRest_frame"), V0InV0(3, 0));
}
for (auto& candidate : myv0s) {
double PLambda = sqrt(candidate.v0px() * candidate.v0px() + candidate.v0py() * candidate.v0py() + candidate.v0pz() * candidate.v0pz());

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[std-prefix] 

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double ELambda = sqrt(candidate.v0Lambdamass() * candidate.v0Lambdamass() + PLambda * PLambda);

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[std-prefix] 

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TMatrixD pLabproton(4, 1);
double protonE = sqrt(massPr * massPr + candidate.v0protonpx() * candidate.v0protonpx() + candidate.v0protonpy() * candidate.v0protonpy() + candidate.v0protonpz() * candidate.v0protonpz());

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[std-prefix] 

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pLabproton(0, 0) = protonE;
pLabproton(1, 0) = candidate.v0protonpx();
pLabproton(2, 0) = candidate.v0protonpy();
pLabproton(3, 0) = candidate.v0protonpz();
TMatrixD protonInV0(4, 1);
protonInV0 = LorentzTransInV0frame(ELambda, candidate.v0px(), candidate.v0py(), candidate.v0pz()) * pLabproton;
double protonMassInV0 = sqrt(protonInV0(0, 0) * protonInV0(0, 0) - protonInV0(1, 0) * protonInV0(1, 0) - protonInV0(2, 0) * protonInV0(2, 0) - protonInV0(3, 0) * protonInV0(3, 0));

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[std-prefix] 

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registry.fill(HIST("V0protonMassInRest_frame"), protonMassInV0);
registry.fill(HIST("V0protonpxInRest_frame"), protonInV0(1, 0));
registry.fill(HIST("V0protonpyInRest_frame"), protonInV0(2, 0));
Expand Down Expand Up @@ -655,6 +670,9 @@
if (TMath::Abs(v0.mLambda() - o2::constants::physics::MassLambda0) > v0accLambda) {
return false;
}
if (doArmenterosCut && v0.qtarm() > (paramArmenterosCut * std::abs(v0.alpha())))
return false;

return true;
}

Expand Down Expand Up @@ -723,6 +741,8 @@
if (TMath::Abs(v0.mAntiLambda() - o2::constants::physics::MassLambda0) > v0accLambda) {
return false;
}
if (doArmenterosCut && v0.qtarm() > (paramArmenterosCut * std::abs(v0.alpha())))
return false;
return true;
}

Expand Down Expand Up @@ -890,6 +910,7 @@
registryData.fill(HIST("number_of_events_vsmultiplicity"), multiplicity);
// v0 loop
int V0Numbers = 0;
int AntiV0Numbers = 0;
for (const auto& v0 : fullV0s) {
const auto& pos = v0.posTrack_as<StrHadronDaughterTracks>();
const auto& neg = v0.negTrack_as<StrHadronDaughterTracks>();
Expand All @@ -899,6 +920,7 @@
registryData.fill(HIST("LambdaPtMass"), v0.pt(), v0.mLambda());
}
if (passedAntiLambdaSelection(v0, pos, neg)) {
AntiV0Numbers = AntiV0Numbers + 1;
registryData.fill(HIST("AntiLambdaPtMass"), v0.pt(), v0.mAntiLambda());
}
}
Expand All @@ -913,6 +935,7 @@
return;
}
double protonsinPhiInJetV0frame = 0;
double AntiprotonsinPhiInJetV0frame = 0;
cout << maxJetpx << endl;
for (const auto& candidate : fullV0s) {
const auto& pos = candidate.posTrack_as<StrHadronDaughterTracks>();
Expand Down Expand Up @@ -982,7 +1005,7 @@
double protonPinJetV0 = sqrt(protonInJetV0(1, 0) * protonInJetV0(1, 0) + protonInJetV0(2, 0) * protonInJetV0(2, 0) + protonInJetV0(3, 0) * protonInJetV0(3, 0));
double protonPtinJetV0 = sqrt(protonInJetV0(1, 0) * protonInJetV0(1, 0) + protonInJetV0(2, 0) * protonInJetV0(2, 0));

double protonCosThetainJetV0 = protonInV0(3, 0) / protonPinJetV0;
double protonCosThetainJetV0 = protonInJetV0(3, 0) / protonPinJetV0;
double protonSinThetainJetV0 = protonPtinJetV0 / protonPinJetV0;
double protonthetainJetV0 = TMath::ASin(protonSinThetainJetV0);
registryV0Data.fill(HIST("hprotoncosthetainJetV0"), protonCosThetainJetV0);
Expand All @@ -997,6 +1020,44 @@
registryV0Data.fill(HIST("AverageSinthetainJetV0"), candidate.mLambda(), protonSinThetainJetV0);
registryV0Data.fill(HIST("AverageCosSquarethetainJetV0"), candidate.mLambda(), protonCosThetainJetV0 * protonCosThetainJetV0);
protonsinPhiInJetV0frame = protonsinPhiInJetV0frame + protonInJetV0(2, 0) / sqrt(protonInJetV0(1, 0) * protonInJetV0(1, 0) + protonInJetV0(2, 0) * protonInJetV0(2, 0));

registryData.fill(HIST("TProfile2DLambdaPtMassSinPhi"), candidate.mLambda(), candidate.pt(), protonInJetV0(2, 0) / sqrt(protonInJetV0(1, 0) * protonInJetV0(1, 0) + protonInJetV0(2, 0) * protonInJetV0(2, 0)));
registryData.fill(HIST("TProfile2DLambdaPtMassSintheta"), candidate.mLambda(), candidate.pt(), protonSinThetainJetV0);
registryData.fill(HIST("TProfile2DLambdaPtMassCosSquareTheta"), candidate.mLambda(), candidate.pt(), protonCosThetainJetV0 * protonCosThetainJetV0);
}
if (passedAntiLambdaSelection(candidate, pos, neg)) {
double PAntiLambda = sqrt(candidate.px() * candidate.px() + candidate.py() * candidate.py() + candidate.pz() * candidate.pz());
double EAntiLambda = sqrt(candidate.mAntiLambda() * candidate.mAntiLambda() + PAntiLambda * PAntiLambda);
double AntiprotonE = sqrt(massPr * massPr + neg.px() * neg.px() + neg.py() * neg.py() + neg.pz() * neg.pz());
TMatrixD pLabAntiV0(4, 1);
pLabAntiV0(0, 0) = EAntiLambda;
pLabAntiV0(1, 0) = candidate.px();
pLabAntiV0(2, 0) = candidate.py();
pLabAntiV0(3, 0) = candidate.pz();

TMatrixD AntilambdaInJet(4, 1);
AntilambdaInJet = MyTMatrixTranslationToJet(maxJetpx, maxJetpy, maxJetpz, candidate.px(), candidate.py(), candidate.pz()) * pLabAntiV0;

TMatrixD pLabAntiproton(4, 1);
pLabAntiproton(0, 0) = AntiprotonE;
pLabAntiproton(1, 0) = neg.px();
pLabAntiproton(2, 0) = neg.py();
pLabAntiproton(3, 0) = neg.pz();
TMatrixD AntiprotonInJetV0(4, 1);
AntiprotonInJetV0 = LorentzTransInV0frame(EAntiLambda, AntilambdaInJet(1, 0), AntilambdaInJet(2, 0), AntilambdaInJet(3, 0)) * MyTMatrixTranslationToJet(maxJetpx, maxJetpy, maxJetpz, candidate.px(), candidate.py(), candidate.pz()) * pLabAntiproton;
AntiprotonsinPhiInJetV0frame = AntiprotonsinPhiInJetV0frame + AntiprotonInJetV0(2, 0) / sqrt(AntiprotonInJetV0(1, 0) * AntiprotonInJetV0(1, 0) + AntiprotonInJetV0(2, 0) * AntiprotonInJetV0(2, 0));
registryData.fill(HIST("TProfile2DAntiLambdaPtMassSinPhi"), candidate.mAntiLambda(), candidate.pt(), AntiprotonInJetV0(2, 0) / sqrt(AntiprotonInJetV0(1, 0) * AntiprotonInJetV0(1, 0) + AntiprotonInJetV0(2, 0) * AntiprotonInJetV0(2, 0)));

TMatrixD AntiprotonInV0(4, 1);
AntiprotonInV0 = LorentzTransInV0frame(EAntiLambda, candidate.px(), candidate.py(), candidate.pz()) * pLabAntiproton;

double AntiprotonPinJetV0 = sqrt(AntiprotonInJetV0(1, 0) * AntiprotonInJetV0(1, 0) + AntiprotonInJetV0(2, 0) * AntiprotonInJetV0(2, 0) + AntiprotonInJetV0(3, 0) * AntiprotonInJetV0(3, 0));
double AntiprotonPtinJetV0 = sqrt(AntiprotonInJetV0(1, 0) * AntiprotonInJetV0(1, 0) + AntiprotonInJetV0(2, 0) * AntiprotonInJetV0(2, 0));

double AntiprotonCosThetainJetV0 = AntiprotonInJetV0(3, 0) / AntiprotonPinJetV0;
double AntiprotonSinThetainJetV0 = AntiprotonPtinJetV0 / AntiprotonPinJetV0;
registryData.fill(HIST("TProfile2DAntiLambdaPtMassSintheta"), candidate.mAntiLambda(), candidate.pt(), AntiprotonSinThetainJetV0);
registryData.fill(HIST("TProfile2DAntiLambdaPtMassCosSquareTheta"), candidate.mAntiLambda(), candidate.pt(), AntiprotonCosThetainJetV0 * AntiprotonCosThetainJetV0);
}
}

Expand All @@ -1009,6 +1070,10 @@
registryData.fill(HIST("V0LambdaprotonPhi"), TMath::ASin(protonsinPhiInJetV0frame / V0Numbers));
registryData.fill(HIST("profileLambda"), candidate.mLambda(), protonsinPhiInJetV0frame / V0Numbers);
}
if (passedAntiLambdaSelection(candidate, pos, neg)) {
registryData.fill(HIST("hAntiLambdamassandSinPhi"), candidate.mAntiLambda(), AntiprotonsinPhiInJetV0frame / AntiV0Numbers);
registryData.fill(HIST("profileAntiLambda"), candidate.mAntiLambda(), AntiprotonsinPhiInJetV0frame / AntiV0Numbers);
}
}
}
PROCESS_SWITCH(LfMyV0s, processData, "processData", true);
Expand All @@ -1019,7 +1084,6 @@
if (!AcceptEvent(collision)) {
return;
}

registryData.fill(HIST("hNEvents"), 8.5);
int V0NumbersPerEvent = 0;
int V0NumbersPerEventsel = 0;
Expand Down
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