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[PWGLF] Add new histogram and selection for mixed event #11422

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Merged
skundu692 merged 2 commits into from
May 31, 2025
Merged

[PWGLF] Add new histogram and selection for mixed event #11422

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2b3f168
Add new histogram and selection for mixed event
skundu692 May 31, 2025
d29f377
Update taskLambdaSpinCorr.cxx
skundu692 May 31, 2025
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72 changes: 55 additions & 17 deletions PWGLF/Tasks/Strangeness/taskLambdaSpinCorr.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,8 @@
#include <fairlogger/Logger.h>
#include <tuple>
#include <string>
#include <vector>
#include "Math/Vector2D.h"
#include "Math/Vector3D.h"
#include "Math/Vector4D.h"
#include "Math/GenVector/Boost.h"
Expand Down Expand Up @@ -59,6 +61,8 @@
Configurable<bool> cfgEvtRCTFlagCheckerLimitAcceptAsBad{"cfgEvtRCTFlagCheckerLimitAcceptAsBad", true, "Evt sel: RCT flag checker treat Limited Acceptance As Bad"};
} rctCut;
// mixing
Configurable<int> mixingCombination{"mixingCombination", 1, "mixing Combination"};
Configurable<bool> mixingEvSel{"mixingEvSel", false, "mixingEvSel"};
Configurable<int> cfgCutOccupancy{"cfgCutOccupancy", 2000, "Occupancy cut"};
ConfigurableAxis axisVertex{"axisVertex", {5, -10, 10}, "vertex axis for bin"};
ConfigurableAxis axisMultiplicityClass{"axisMultiplicityClass", {8, 0, 80}, "multiplicity percentile for bin"};
Expand Down Expand Up @@ -122,6 +126,9 @@
AxisSpec thnAxisInvMass{iMNbins, lbinIM, hbinIM, "#it{M} (GeV/#it{c}^{2})"};
AxisSpec thnAxisInvMasspair{iMNbinspair, lbinIMpair, hbinIMpair, "#it{M} (GeV/#it{c}^{2})"};
histos.add("hEvtSelInfo", "hEvtSelInfo", kTH1F, {{10, 0, 10.0}});
histos.add("hPtDiff", "hPtDiff", kTH1F, {{1000, 0, 100.0}});
histos.add("hRDiff", "hRDiff", kTH1F, {{640, 0, 16.0}});
histos.add("hv0Mult", "hv0Mult", kTH1F, {{10001, -0.5, 10000.5}});
histos.add("hCentrality", "Centrality distribution", kTH1F, {{configcentAxis}});
histos.add("hSparseLambdaLambda", "hSparseLambdaLambda", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
histos.add("hSparseLambdaAntiLambda", "hSparseLambdaAntiLambda", HistType::kTHnSparseF, {thnAxisInvMass, thnAxisInvMass, configthnAxisPol, configcentAxis, thnAxisInvMasspair}, true);
Expand Down Expand Up @@ -275,7 +282,7 @@
auto proton2LambdaRF = boostLambda2ToCM(proton2pairCM);

double cosThetaDiff = proton1LambdaRF.Vect().Unit().Dot(proton2LambdaRF.Vect().Unit());
double deltaR = TMath::Sqrt(TMath::Power(particle1.Eta() - particle2.Eta(), 2.0) + TMath::Power(particle1.Phi() - particle2.Phi(), 2.0));

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
if (datatype == 0) {
if (tag1 && tag3) {
histos.fill(HIST("hSparseLambdaLambda"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
Expand Down Expand Up @@ -306,7 +313,7 @@
}
}

if (datatype == 2) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
if (tag1 && tag3) {
histos.fill(HIST("hSparseLambdaLambdaMixed"), particle1.M(), particle2.M(), cosThetaDiff, centrality, deltaR);
}
Expand Down Expand Up @@ -514,7 +521,7 @@
Preslice<aod::V0Datas> tracksPerCollisionV0 = aod::v0data::collisionId;
void processME(EventCandidates const& collisions, AllTrackCandidates const&, ResoV0s const& V0s)
{
for (auto& [collision1, collision2] : selfCombinations(colBinning, nMix, -1, collisions, collisions)) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
// LOGF(info, "Mixed event collisions: (%d, %d)", collision1.index(), collision2.index());
if (rctCut.requireRCTFlagChecker && !rctChecker(collision1)) {
continue;
Expand Down Expand Up @@ -550,7 +557,7 @@
if (additionalEvSel4 && !collision1.selection_bit(o2::aod::evsel::kNoCollInTimeRangeStandard)) {
continue;
}
if (additionalEvSel5 && !collision1.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
if (mixingEvSel && additionalEvSel5 && !collision1.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
continue;
}

Expand All @@ -560,7 +567,7 @@
if (additionalEvSel4 && !collision2.selection_bit(o2::aod::evsel::kNoCollInTimeRangeStandard)) {
continue;
}
if (additionalEvSel5 && !collision2.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
if (mixingEvSel && additionalEvSel5 && !collision2.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
continue;
}

Expand All @@ -570,12 +577,18 @@
auto groupV03 = V0s.sliceBy(tracksPerCollisionV0, collision2.globalIndex());
// for (auto& [t1, t2, t3] : soa::combinations(o2::soa::CombinationsFullIndexPolicy(groupV01, groupV02, groupV03))) {
// LOGF(info, "Mixed event collisions: (%d, %d, %d)", t1.collisionId(),t2.collisionId(),t3.collisionId());
auto maxV0Size = 1100;
if (groupV01.size() > maxV0Size || groupV02.size() > maxV0Size || groupV03.size() > maxV0Size) {
continue;
}
bool pairStatus[1150][1150] = {{false}};

// auto maxV0Size = 1400;
// if (groupV01.size() > maxV0Size || groupV02.size() > maxV0Size || groupV03.size() > maxV0Size) {
// continue;
// }
// bool pairStatus[1500][1500] = {{false}};

size_t rows = groupV03.size() + 20;
size_t cols = groupV01.size() + 20;
std::vector<std::vector<bool>> pairStatus(rows, std::vector<bool>(cols, false));
histos.fill(HIST("hv0Mult"), groupV01.size());
for (auto& [t1, t2] : soa::combinations(o2::soa::CombinationsFullIndexPolicy(groupV01, groupV02))) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
bool pairfound = false;
if (t2.index() <= t1.index()) {
continue;
Expand Down Expand Up @@ -605,9 +618,14 @@
if (postrack1.globalIndex() == postrack2.globalIndex() || negtrack1.globalIndex() == negtrack2.globalIndex()) {
continue;
}
auto samePairSumPt = t1.pt() + t2.pt();
auto samePairR = TMath::Sqrt(TMath::Power(t1.phi() - t2.phi(), 2.0) + TMath::Power(t1.eta() - t2.eta(), 2.0));

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
for (const auto& t3 : groupV03) {
// if (pairStatus[t3.index()][t2.index()]) {
// LOGF(info, "repeat match found v0 id: (%d, %d)", t3.index(), t2.index());
// continue;
// }
if (pairStatus[t3.index()][t2.index()]) {
// LOGF(info, "repeat match found v0 id: (%d, %d)", t3.index(), t2.index());
continue;
}
if (t1.collisionId() == t3.collisionId()) {
Expand All @@ -623,13 +641,33 @@
if (lambdaTag1 != lambdaTag3 || aLambdaTag1 != aLambdaTag3) {
continue;
}
if (std::abs(t1.pt() - t3.pt()) > ptMix) {
// if (std::abs(t1.pt() - t3.pt()) > ptMix) {
// continue;
// }
// if (std::abs(t1.eta() - t3.eta()) > etaMix) {
// continue;
// }
// if (std::abs(t1.phi() - t3.phi()) > phiMix) {
// continue;
// }
auto mixPairSumPt = t3.pt() + t2.pt();
auto mixPairR = TMath::Sqrt(TMath::Power(t3.phi() - t2.phi(), 2.0) + TMath::Power(t3.eta() - t2.eta(), 2.0));

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
histos.fill(HIST("hPtDiff"), TMath::Abs(mixPairSumPt - samePairSumPt));

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[root/entity] 

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histos.fill(HIST("hRDiff"), TMath::Abs(mixPairR - samePairR));

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[root/entity] 

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if (mixingCombination == 0 && std::abs(t1.pt() - t3.pt()) > ptMix) {
continue;
}
if (std::abs(t1.eta() - t3.eta()) > etaMix) {
if (mixingCombination == 0 && std::abs(t1.eta() - t3.eta()) > etaMix) {
continue;
}
if (std::abs(t1.phi() - t3.phi()) > phiMix) {
if (mixingCombination == 0 && std::abs(t1.phi() - t3.phi()) > phiMix) {
continue;
}

if (mixingCombination == 1 && std::abs(mixPairSumPt - samePairSumPt) > ptMix) {
continue;
}
if (mixingCombination == 1 && std::abs(mixPairR - samePairR) > etaMix) {
continue;
}
if (lambdaTag2) {
Expand All @@ -654,17 +692,17 @@
}
if (lambdaTag2 && lambdaTag3) {
fillHistograms(1, 0, 1, 0, lambda, lambda2, proton, proton2, centrality, 2);
}
if (aLambdaTag2 && aLambdaTag3) {
} else if (aLambdaTag2 && aLambdaTag3) {
fillHistograms(0, 1, 0, 1, antiLambda, antiLambda2, antiProton, antiProton2, centrality, 2);
}
if (lambdaTag2 && aLambdaTag3) {
} else if (lambdaTag2 && aLambdaTag3) {
fillHistograms(1, 0, 0, 1, lambda, antiLambda2, proton, antiProton2, centrality, 2);
}
if (aLambdaTag2 && lambdaTag3) {
} else if (aLambdaTag2 && lambdaTag3) {
fillHistograms(0, 1, 1, 0, antiLambda, lambda2, antiProton, proton2, centrality, 2);
} else {
continue;
}
pairfound = true;
// pairStatus[t3.index()][t2.index()] = true;
pairStatus[t3.index()][t2.index()] = true;
// LOGF(info, "v0 id: (%d, %d)", t3.index(), t2.index());
if (pairfound) {
Expand Down Expand Up @@ -760,7 +798,7 @@
// Processing Event Mixing MC
void processMEMC(CollisionMCRecTableCentFT0C const& collisions, TrackMCRecTable const&, V0TrackCandidatesMC const& V0s)
{
for (auto& [collision1, collision2] : selfCombinations(colBinning, nMix, -1, collisions, collisions)) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
// LOGF(info, "Mixed event collisions: (%d, %d)", collision1.index(), collision2.index());

if (collision1.index() == collision2.index()) {
Expand All @@ -787,7 +825,7 @@
continue;
}
bool pairStatus[1150][1150] = {{false}};
for (auto& [t1, t2] : soa::combinations(o2::soa::CombinationsFullIndexPolicy(groupV01, groupV02))) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
bool pairfound = false;
if (t2.index() <= t1.index()) {
continue;
Expand Down
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