Skip to content

[PWGLF] Add missing rapidity cut on secondary Lambda #17660

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
romainschotter merged 1 commit into from
Aug 28, 2026
+47 −41
Merged

[PWGLF] Add missing rapidity cut on secondary Lambda #17660

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
88 changes: 47 additions & 41 deletions PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -548,21 +548,21 @@
BITSET(maskTrackProperties, selPosDeepSec);
BITSET(maskTrackProperties, selPosGoodTPCTrack);
// TPC signal is available: ask for positive track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

Check failure on line 551 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 557 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPr < 1e+5 || v0Selections.maxDeltaTimeProton < 1e+6) { // safeguard for no cut

Check failure on line 561 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 565 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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 @@ -570,21 +570,21 @@
BITSET(maskTrackProperties, selPosGoodTPCTrack);
BITSET(maskTrackProperties, selPosGoodITSTrack);
// TPC signal is available: ask for positive track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

Check failure on line 573 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 579 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPr < 1e+5 || v0Selections.maxDeltaTimeProton < 1e+6) { // safeguard for no cut

Check failure on line 583 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 587 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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 @@ -599,13 +599,13 @@
BITSET(maskTrackProperties, selNegDeepSec);
BITSET(maskTrackProperties, selNegGoodTPCTrack);
// TPC signal is available: ask for negative track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

Check failure on line 602 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[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.requireAtLeastOneHasTOF || v0Selections.requireNegHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 608 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

View workflow job for this annotation

GitHub Actions / O2 linter

[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaNegativePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTNegativePionK0Short);
}
Expand Down Expand Up @@ -2985,7 +2985,7 @@
histos.fill(HIST("GeneralQA/h2dArmenterosAll"), v0.alpha(), v0.qtarm());

float ptmc = RecoDecay::sqrtSumOfSquares(v0MC.pxPosMC() + v0MC.pxNegMC(), v0MC.pyPosMC() + v0MC.pyNegMC());
float ymc = 1e-3;
float ymc = 1e3;
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()) == PDG_t::kLambda0)
Expand Down Expand Up @@ -3242,23 +3242,26 @@

if (doSecondaryV0s && std::abs(cascMC.pdgCodeV0()) == kLambda0) {
float v0PtMc = std::hypot(cascMC.pxPosMC() + cascMC.pxNegMC(), cascMC.pyPosMC() + cascMC.pyNegMC());
if (cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromXiVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromXiVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromOmegaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromOmegaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
float v0RapMc = RecoDecay::y(std::array{cascMC.pxPosMC() + cascMC.pxNegMC(), cascMC.pyPosMC() + cascMC.pyNegMC(), cascMC.pzPosMC() + cascMC.pzNegMC()}, o2::constants::physics::MassLambda);
if (v0Selections.rapidityMinCut < v0RapMc && v0RapMc < v0Selections.rapidityMaxCut) {
if (cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromXiVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromXiVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromOmegaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromOmegaVsMultMC_RecoedEvt"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
}
}
}
Expand Down Expand Up @@ -3314,29 +3317,32 @@

if (doSecondaryV0s && std::abs(cascMC.pdgCodeV0()) == kLambda0) {
float v0PtMc = std::hypot(cascMC.pxPosMC() + cascMC.pxNegMC(), cascMC.pyPosMC() + cascMC.pyNegMC());
if (cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambda"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambda"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromXi"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaFromXiVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromXi"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaFromXiVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromOmega"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaFromOmegaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromOmega"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaFromOmegaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
float v0RapMc = RecoDecay::y(std::array{cascMC.pxPosMC() + cascMC.pxNegMC(), cascMC.pyPosMC() + cascMC.pyNegMC(), cascMC.pzPosMC() + cascMC.pzNegMC()}, o2::constants::physics::MassLambda);
if (v0Selections.rapidityMinCut < v0RapMc && v0RapMc < v0Selections.rapidityMaxCut) {
if (cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambda"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambda"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromXi"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaFromXiVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kXiPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromXi"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaFromXiVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaMinus && cascMC.pdgCodeV0() == kLambda0) {
histos.fill(HIST("h2dGenSecLambdaFromOmega"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecLambdaFromOmegaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
if (cascMC.pdgCode() == PDG_t::kOmegaPlusBar && cascMC.pdgCodeV0() == kLambda0Bar) {
histos.fill(HIST("h2dGenSecAntiLambdaFromOmega"), centrality, v0PtMc);
histos.fill(HIST("h2dGenSecAntiLambdaFromOmegaVsMultMC"), mcCollision.multMCNParticlesEta05(), v0PtMc);
}
}
}
}
Expand Down
Loading