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[PWGLF] Fix MC generated information #11815

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Merged
fmazzasc merged 3 commits into from
Jul 1, 2025
Merged

[PWGLF] Fix MC generated information #11815

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b1010a8
Fix MC generated information
Jun 27, 2025
3412c05
Please consider the following formatting changes
alibuild Jun 27, 2025
56c72fb
Merge pull request #36 from alibuild/alibot-cleanup-11815
fmazzasc Jun 27, 2025
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88 changes: 58 additions & 30 deletions PWGLF/Tasks/Strangeness/sigmaminustask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -28,9 +28,9 @@

using TracksFull = soa::Join<aod::TracksIU, aod::TracksExtra, aod::TracksCovIU, aod::pidTPCPi>;
using CollisionsFull = soa::Join<aod::Collisions, aod::EvSel>;
using CollisionsFullMC = soa::Join<aod::Collisions, aod::McCollisionLabels, aod::EvSels>;
using CollisionsFullMC = soa::Join<aod::Collisions, aod::McCollisionLabels, aod::EvSel>;

struct sigmaminustask {

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[name/struct] 

Use UpperCamelCase for names of structs.
// Histograms are defined with HistogramRegistry
HistogramRegistry rEventSelection{"eventSelection", {}, OutputObjHandlingPolicy::AnalysisObject, true, true};
HistogramRegistry rSigmaMinus{"sigmaminus", {}, OutputObjHandlingPolicy::AnalysisObject, true, true};
Expand All @@ -39,6 +39,8 @@
Configurable<float> cutzvertex{"cutzvertex", 10.0f, "Accepted z-vertex range (cm)"};
Configurable<float> cutNSigmaPi{"cutNSigmaPi", 4, "NSigmaTPCPion"};

Preslice<aod::KinkCands> mPerCol = aod::track::collisionId;

void init(InitContext const&)
{
// Axes
Expand All @@ -58,7 +60,8 @@

if (doprocessMC) {
// Add MC histograms if needed
rSigmaMinus.add("h2MassSigmaMinusPtMC", "h2MassSigmaMinusPtMC", {HistType::kTH2F, {ptAxis, sigmaMassAxis}});
rSigmaMinus.add("h2MassPtMCRec", "h2MassPtMCRec", {HistType::kTH2F, {ptAxis, sigmaMassAxis}});
rSigmaMinus.add("h2MassPtMCGen", "h2MassPtMCGen", {HistType::kTH2F, {ptAxis, sigmaMassAxis}});
}
}

Expand All @@ -70,7 +73,7 @@
rEventSelection.fill(HIST("hVertexZRec"), collision.posZ());
for (const auto& kinkCand : KinkCands) {
auto dauTrack = kinkCand.trackDaug_as<TracksFull>();
if (abs(dauTrack.tpcNSigmaPi()) > cutNSigmaPi) {

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[std-prefix] 

Use std:: prefix for names from the std namespace.
continue;
}
rSigmaMinus.fill(HIST("h2MassSigmaMinusPt"), kinkCand.mothSign() * kinkCand.ptMoth(), kinkCand.mSigmaMinus());
Expand All @@ -80,46 +83,71 @@
}
PROCESS_SWITCH(sigmaminustask, processData, "Data processing", true);

void processMC(CollisionsFullMC::iterator const& collision, aod::KinkCands const& KinkCands, aod::McTrackLabels const& trackLabelsMC, aod::McParticles const&, TracksFull const&)
void processMC(CollisionsFullMC const& collisions, aod::KinkCands const& KinkCands, aod::McTrackLabels const& trackLabelsMC, aod::McParticles const& particlesMC, TracksFull const&)
{
if (std::abs(collision.posZ()) > cutzvertex || !collision.sel8()) {
return;
}
rEventSelection.fill(HIST("hVertexZRec"), collision.posZ());
for (const auto& kinkCand : KinkCands) {
auto dauTrack = kinkCand.trackDaug_as<TracksFull>();
auto mothTrack = kinkCand.trackMoth_as<TracksFull>();
if (dauTrack.sign() != mothTrack.sign()) {
LOG(info) << "Skipping kink candidate with opposite sign daughter and mother: " << kinkCand.globalIndex();
continue; // Skip if the daughter has the opposite sign as the mother
}
if (abs(dauTrack.tpcNSigmaPi()) > cutNSigmaPi) {
for (const auto& collision : collisions) {
if (std::abs(collision.posZ()) > cutzvertex || !collision.sel8()) {
continue;
}

rSigmaMinus.fill(HIST("h2MassSigmaMinusPt"), kinkCand.mothSign() * kinkCand.ptMoth(), kinkCand.mSigmaMinus());
rSigmaMinus.fill(HIST("h2SigmaMassVsXiMass"), kinkCand.mXiMinus(), kinkCand.mSigmaMinus());
rSigmaMinus.fill(HIST("h2NSigmaPiPt"), kinkCand.mothSign() * kinkCand.ptMoth(), dauTrack.tpcNSigmaPi());
// do MC association
auto mcLabSigma = trackLabelsMC.rawIteratorAt(mothTrack.globalIndex());
auto mcLabPiDau = trackLabelsMC.rawIteratorAt(dauTrack.globalIndex());
if (mcLabSigma.has_mcParticle() && mcLabPiDau.has_mcParticle()) {
auto mcTrackSigma = mcLabSigma.mcParticle_as<aod::McParticles>();
auto mcTrackPiDau = mcLabPiDau.mcParticle_as<aod::McParticles>();
if (!mcTrackPiDau.has_mothers()) {
rEventSelection.fill(HIST("hVertexZRec"), collision.posZ());
auto kinkCandPerColl = KinkCands.sliceBy(mPerCol, collision.globalIndex());
for (const auto& kinkCand : kinkCandPerColl) {
auto dauTrack = kinkCand.trackDaug_as<TracksFull>();
auto mothTrack = kinkCand.trackMoth_as<TracksFull>();
if (dauTrack.sign() != mothTrack.sign()) {
LOG(info) << "Skipping kink candidate with opposite sign daughter and mother: " << kinkCand.globalIndex();
continue; // Skip if the daughter has the opposite sign as the mother
}
if (abs(dauTrack.tpcNSigmaPi()) > cutNSigmaPi) {

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[std-prefix] 

Use std:: prefix for names from the std namespace.
continue;
}
for (auto& piMother : mcTrackPiDau.mothers_as<aod::McParticles>()) {
if (piMother.globalIndex() != mcTrackSigma.globalIndex()) {

rSigmaMinus.fill(HIST("h2MassSigmaMinusPt"), kinkCand.mothSign() * kinkCand.ptMoth(), kinkCand.mSigmaMinus());
rSigmaMinus.fill(HIST("h2SigmaMassVsXiMass"), kinkCand.mXiMinus(), kinkCand.mSigmaMinus());
rSigmaMinus.fill(HIST("h2NSigmaPiPt"), kinkCand.mothSign() * kinkCand.ptMoth(), dauTrack.tpcNSigmaPi());
// do MC association
auto mcLabSigma = trackLabelsMC.rawIteratorAt(mothTrack.globalIndex());
auto mcLabPiDau = trackLabelsMC.rawIteratorAt(dauTrack.globalIndex());
if (mcLabSigma.has_mcParticle() && mcLabPiDau.has_mcParticle()) {
auto mcTrackSigma = mcLabSigma.mcParticle_as<aod::McParticles>();
auto mcTrackPiDau = mcLabPiDau.mcParticle_as<aod::McParticles>();
if (!mcTrackPiDau.has_mothers()) {
continue;
}
if (std::abs(mcTrackSigma.pdgCode()) != 3112 || std::abs(mcTrackPiDau.pdgCode()) != 211) {
continue;
for (auto& piMother : mcTrackPiDau.mothers_as<aod::McParticles>()) {

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[const-ref-in-for-loop] 

Use constant references for non-modified iterators in range-based for loops.
if (piMother.globalIndex() != mcTrackSigma.globalIndex()) {
continue;
}
if (std::abs(mcTrackSigma.pdgCode()) != 3112 || std::abs(mcTrackPiDau.pdgCode()) != 211) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
continue;
}
rSigmaMinus.fill(HIST("h2MassPtMCRec"), kinkCand.mothSign() * kinkCand.ptMoth(), kinkCand.mSigmaMinus());
}
rSigmaMinus.fill(HIST("h2MassSigmaMinusPtMC"), kinkCand.mothSign() * kinkCand.ptMoth(), kinkCand.mSigmaMinus());
}
}
}
for (const auto& mcPart : particlesMC) {
if (std::abs(mcPart.pdgCode()) != 3112 || std::abs(mcPart.y()) > 0.5) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
continue;
}
if (!mcPart.has_daughters()) {
continue; // Skip if no daughters
}
bool hasSigmaDaughter = false;
for (const auto& daughter : mcPart.daughters_as<aod::McParticles>()) {
if (std::abs(daughter.pdgCode()) == 211) { // Sigma PDG code

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
hasSigmaDaughter = true;
break; // Found a pi daughter, exit loop
}
}
if (!hasSigmaDaughter) {
continue; // Skip if no pi daughter found
}
float mcMass = std::sqrt(mcPart.e() * mcPart.e() - mcPart.p() * mcPart.p());
int sigmaSign = mcPart.pdgCode() > 0 ? 1 : -1; // Determine the sign of the Sigma
rSigmaMinus.fill(HIST("h2MassPtMCGen"), sigmaSign * mcPart.pt(), mcMass);
}
}
PROCESS_SWITCH(sigmaminustask, processMC, "MC processing", false);
};
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