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[PWGLF] Add event selection vs centrality histogram #13290

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Merged
romainschotter merged 6 commits into from
Oct 9, 2025
Merged

[PWGLF] Add event selection vs centrality histogram #13290

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f9b8b21
Add event selection vs centrality histogram
romainschotter Oct 8, 2025
fe1c340
Add FV0A Centrality
romainschotter Oct 8, 2025
38cfd8a
Add some of the O2Linter errors
romainschotter Oct 8, 2025
de234d2
Fix typo
romainschotter Oct 8, 2025
3eeb620
Please consider the following formatting changes
alibuild Oct 8, 2025
7ec9912
Merge pull request #58 from alibuild/alibot-cleanup-13290
romainschotter Oct 8, 2025
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66 changes: 33 additions & 33 deletions PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@
#include <Math/Vector4D.h>
#include <TFile.h>
#include <TH2D.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 <TPDGCode.h>
#include <TProfile.h>

Expand Down Expand Up @@ -516,21 +516,21 @@
BITSET(maskTrackProperties, selPosGoodTPCTrack);
BITSET(maskTrackProperties, selPosGoodITSTrack);
// TPC signal is available: ask for positive track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTPCPIDPositivePion);
BITSET(maskLambdaSpecific, selTPCPIDPositiveProton);
BITSET(maskAntiLambdaSpecific, selTPCPIDPositivePion);
}
// TOF PID
if (v0Selections.tofPidNsigmaCutK0Pi < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaPositivePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTPositivePionK0Short);
}
if (v0Selections.tofPidNsigmaCutLaPr < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskLambdaSpecific, selTOFNSigmaPositiveProtonLambda);
BITSET(maskLambdaSpecific, selTOFDeltaTPositiveProtonLambda);
}
if (v0Selections.tofPidNsigmaCutLaPi < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskAntiLambdaSpecific, selTOFNSigmaPositivePionLambda);
BITSET(maskAntiLambdaSpecific, selTOFDeltaTPositivePionLambda);
}
Expand All @@ -542,21 +542,21 @@
BITSET(maskTrackProperties, selNegGoodTPCTrack);
BITSET(maskTrackProperties, selNegGoodITSTrack);
// TPC signal is available: ask for negative track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTPCPIDNegativePion);
BITSET(maskLambdaSpecific, selTPCPIDNegativePion);
BITSET(maskAntiLambdaSpecific, selTPCPIDNegativeProton);
}
// TOF PID
if (v0Selections.tofPidNsigmaCutK0Pi < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaNegativePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTNegativePionK0Short);
}
if (v0Selections.tofPidNsigmaCutLaPi < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskLambdaSpecific, selTOFNSigmaNegativePionLambda);
BITSET(maskLambdaSpecific, selTOFDeltaTNegativePionLambda);
}
if (v0Selections.tofPidNsigmaCutLaPr < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskAntiLambdaSpecific, selTOFNSigmaNegativeProtonLambda);
BITSET(maskAntiLambdaSpecific, selTOFDeltaTNegativeProtonLambda);
}
Expand Down Expand Up @@ -671,7 +671,7 @@
histos.get<TH2>(HIST("hEventSelectionVsCentrality"))->GetXaxis()->SetBinLabel(19, "Below min IR");
histos.get<TH2>(HIST("hEventSelectionVsCentrality"))->GetXaxis()->SetBinLabel(20, "Above max IR");
histos.get<TH2>(HIST("hEventSelectionVsCentrality"))->GetXaxis()->SetBinLabel(21, "RCT flags");

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Trailing spaces 

Remove the trailing spaces at the end of the line.
histos.add("hCentralityVsNGlobal", "hCentralityVsNGlobal", kTH2D, {{101, 0.0f, 101.0f}, axisConfigurations.axisNch});
histos.add("hEventCentVsMultFT0M", "hEventCentVsMultFT0M", kTH2D, {{101, 0.0f, 101.0f}, axisConfigurations.axisMultFT0M});
histos.add("hEventCentVsMultFT0C", "hEventCentVsMultFT0C", kTH2D, {{101, 0.0f, 101.0f}, axisConfigurations.axisMultFT0C});
Expand Down Expand Up @@ -707,7 +707,7 @@
// for QA and test purposes
auto hRawCentrality = histos.add<TH1>("hRawCentrality", "hRawCentrality", kTH1D, {axisConfigurations.axisRawCentrality});

for (int ii = 1; ii < 101; ii++) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
float value = 100.5f - static_cast<float>(ii);
hRawCentrality->SetBinContent(ii, value);
}
Expand Down Expand Up @@ -1186,14 +1186,14 @@
// Calculation taken from CF: https://github.com/AliceO2Group/O2Physics/blob/376392cb87349886a300c75fa2492b50b7f46725/PWGCF/Flow/Tasks/flowAnalysisGF.cxx#L470
{
if (magField < 0) // for negative polarity field
phi = TMath::TwoPi() - phi;
phi = o2::constants::math::TwoPI - phi;
if (sign < 0) // for negative charge
phi = TMath::TwoPi() - phi;
phi = o2::constants::math::TwoPI - phi;
if (phi < 0)
LOGF(warning, "phi < 0: %g", phi);

phi += TMath::Pi() / 18.0; // to center gap in the middle
return fmod(phi, TMath::Pi() / 9.0);
phi += o2::constants::math::PI / 18.0; // to center gap in the middle
Comment thread
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return fmod(phi, o2::constants::math::PI / 9.0);
}

bool isTrackFarFromTPCBoundary(double trackPt, double trackPhi, int sign)
Expand Down Expand Up @@ -1339,22 +1339,22 @@
// precalculate this information so that a check is one mask operation, not many
{
uint64_t bitMap = 0;
bool isPositiveProton = v0.pdgCodePositive() == 2212;
bool isPositivePion = v0.pdgCodePositive() == 211 || (doTreatPiToMuon && v0.pdgCodePositive() == -13);
bool isNegativeProton = v0.pdgCodeNegative() == -2212;
bool isNegativePion = v0.pdgCodeNegative() == -211 || (doTreatPiToMuon && v0.pdgCodeNegative() == 13);
bool isPositiveProton = v0.pdgCodePositive() == PDG_t::kProton;
bool isPositivePion = v0.pdgCodePositive() == PDG_t::kPiPlus || (doTreatPiToMuon && v0.pdgCodePositive() == PDG_t::kMuonPlus);
bool isNegativeProton = v0.pdgCodeNegative() == PDG_t::kProtonBar;
bool isNegativePion = v0.pdgCodeNegative() == PDG_t::kPiMinus || (doTreatPiToMuon && v0.pdgCodeNegative() == PDG_t::kMuonMinus);

if (v0.pdgCode() == 310 && isPositivePion && isNegativePion) {
if (v0.pdgCode() == PDG_t::kK0Short && isPositivePion && isNegativePion) {
BITSET(bitMap, selConsiderK0Short);
if (v0.isPhysicalPrimary())
BITSET(bitMap, selPhysPrimK0Short);
}
if (v0.pdgCode() == 3122 && isPositiveProton && isNegativePion) {
if (v0.pdgCode() == PDG_t::kLambda0 && isPositiveProton && isNegativePion) {
BITSET(bitMap, selConsiderLambda);
if (v0.isPhysicalPrimary())
BITSET(bitMap, selPhysPrimLambda);
}
if (v0.pdgCode() == -3122 && isPositivePion && isNegativeProton) {
if (v0.pdgCode() == PDG_t::kLambda0Bar && isPositivePion && isNegativeProton) {
BITSET(bitMap, selConsiderAntiLambda);
if (v0.isPhysicalPrimary())
BITSET(bitMap, selPhysPrimAntiLambda);
Expand Down Expand Up @@ -1942,11 +1942,11 @@

// __________________________________________
if (verifyMask(selMap, secondaryMaskSelectionLambda) && analyseLambda) {
if (v0mother.pdgCode() == 3312 && v0mother.isPhysicalPrimary())
if (v0mother.pdgCode() == PDG_t::kXiMinus && v0mother.isPhysicalPrimary())
histos.fill(HIST("h3dLambdaFeeddown"), centrality, pt, std::hypot(v0mother.px(), v0mother.py()));
}
if (verifyMask(selMap, secondaryMaskSelectionAntiLambda) && analyseAntiLambda) {
if (v0mother.pdgCode() == -3312 && v0mother.isPhysicalPrimary())
if (v0mother.pdgCode() == PDG_t::kXiPlus && v0mother.isPhysicalPrimary())
histos.fill(HIST("h3dAntiLambdaFeeddown"), centrality, pt, std::hypot(v0mother.px(), v0mother.py()));
}
}
Expand Down Expand Up @@ -2586,9 +2586,9 @@

float ptmc = RecoDecay::sqrtSumOfSquares(v0MC.pxPosMC() + v0MC.pxNegMC(), v0MC.pyPosMC() + v0MC.pyNegMC());
float ymc = 1e-3;
if (v0MC.pdgCode() == 310)
if (v0MC.pdgCode() == PDG_t::kK0Short)
ymc = RecoDecay::y(std::array{v0MC.pxPosMC() + v0MC.pxNegMC(), v0MC.pyPosMC() + v0MC.pyNegMC(), v0MC.pzPosMC() + v0MC.pzNegMC()}, o2::constants::physics::MassKaonNeutral);
else if (std::abs(v0MC.pdgCode()) == 3122)
else if (std::abs(v0MC.pdgCode()) == PDG_t::kLambda0)
ymc = RecoDecay::y(std::array{v0MC.pxPosMC() + v0MC.pxNegMC(), v0MC.pyPosMC() + v0MC.pyNegMC(), v0MC.pzPosMC() + v0MC.pzNegMC()}, o2::constants::physics::MassLambda);

uint64_t selMap = computeReconstructionBitmap(v0, collision, ymc, ymc, ptmc);
Expand Down Expand Up @@ -2653,9 +2653,9 @@

float ptmc = v0MC.ptMC();
float ymc = 1e3;
if (v0MC.pdgCode() == 310)
if (v0MC.pdgCode() == PDG_t::kK0Short)
ymc = v0MC.rapidityMC(0);
else if (std::abs(v0MC.pdgCode()) == 3122)
else if (std::abs(v0MC.pdgCode()) == PDG_t::kLambda0)
ymc = v0MC.rapidityMC(1);

if (std::abs(ymc) > v0Selections.rapidityCut)
Expand Down Expand Up @@ -2684,26 +2684,26 @@
centrality = eventSelections.useSPDTrackletsCent ? collision.centRun2SPDTracklets() : collision.centRun2V0M();
}

if (v0MC.pdgCode() == 310) {
if (v0MC.pdgCode() == PDG_t::kK0Short) {
histos.fill(HIST("h2dGenK0ShortVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (v0MC.pdgCode() == 3122) {
if (v0MC.pdgCode() == PDG_t::kLambda0) {
histos.fill(HIST("h2dGenLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (v0MC.pdgCode() == -3122) {
if (v0MC.pdgCode() == PDG_t::kLambda0Bar) {
histos.fill(HIST("h2dGenAntiLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
}

if (v0MC.pdgCode() == 310) {
if (v0MC.pdgCode() == PDG_t::kK0Short) {
histos.fill(HIST("h2dGenK0Short"), centrality, ptmc);
histos.fill(HIST("h2dGenK0ShortVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (v0MC.pdgCode() == 3122) {
if (v0MC.pdgCode() == PDG_t::kLambda0) {
histos.fill(HIST("h2dGenLambda"), centrality, ptmc);
histos.fill(HIST("h2dGenLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (v0MC.pdgCode() == -3122) {
if (v0MC.pdgCode() == PDG_t::kLambda0Bar) {
histos.fill(HIST("h2dGenAntiLambda"), centrality, ptmc);
histos.fill(HIST("h2dGenAntiLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
Expand All @@ -2718,9 +2718,9 @@

float ptmc = cascMC.ptMC();
float ymc = 1e3;
if (std::abs(cascMC.pdgCode()) == 3312)
if (std::abs(cascMC.pdgCode()) == PDG_t::kXiMinus)
ymc = cascMC.rapidityMC(0);
else if (std::abs(cascMC.pdgCode()) == 3334)
else if (std::abs(cascMC.pdgCode()) == PDG_t::kOmegaMinus)
ymc = cascMC.rapidityMC(2);

if (std::abs(ymc) > v0Selections.rapidityCut)
Expand Down Expand Up @@ -2749,33 +2749,33 @@
centrality = eventSelections.useSPDTrackletsCent ? collision.centRun2SPDTracklets() : collision.centRun2V0M();
}

if (cascMC.pdgCode() == 3312) {
if (cascMC.pdgCode() == PDG_t::kXiMinus) {
histos.fill(HIST("h2dGenXiMinusVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == -3312) {
if (cascMC.pdgCode() == PDG_t::kXiPlus) {
histos.fill(HIST("h2dGenXiPlusVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == 3334) {
if (cascMC.pdgCode() == PDG_t::kOmegaMinus) {
histos.fill(HIST("h2dGenOmegaMinusVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == -3334) {
if (cascMC.pdgCode() == PDG_t::kOmegaPlus) {
histos.fill(HIST("h2dGenOmegaPlusVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), ptmc);
}
}

if (cascMC.pdgCode() == 3312) {
if (cascMC.pdgCode() == PDG_t::kXiMinus) {
histos.fill(HIST("h2dGenXiMinus"), centrality, ptmc);
histos.fill(HIST("h2dGenXiMinusVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == -3312) {
if (cascMC.pdgCode() == PDG_t::kXiPlus) {
histos.fill(HIST("h2dGenXiPlus"), centrality, ptmc);
histos.fill(HIST("h2dGenXiPlusVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == 3334) {
if (cascMC.pdgCode() == PDG_t::kOmegaMinus) {
histos.fill(HIST("h2dGenOmegaMinus"), centrality, ptmc);
histos.fill(HIST("h2dGenOmegaMinusVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
if (cascMC.pdgCode() == -3334) {
if (cascMC.pdgCode() == PDG_t::kOmegaPlus) {
histos.fill(HIST("h2dGenOmegaPlus"), centrality, ptmc);
histos.fill(HIST("h2dGenOmegaPlusVsMultMC"), mcCollision.multMCNParticlesEta05(), ptmc);
}
Expand Down
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