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[PWGLF] rapidity cut added in MC #14511

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Merged
maciacco merged 1 commit into from
Jan 16, 2026
+16 −13
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[PWGLF] rapidity cut added in MC #14511

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29 changes: 16 additions & 13 deletions PWGLF/Tasks/Nuspex/spectraKinkPiKa.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -517,28 +517,28 @@
return ptd;
}

double maxKinkAngle(double pMother, double M, double mDaughter)
double maxKinkAngle(double pMother, double M, double beta)
{
double pStar = (M * M - mDaughter * mDaughter) / (2 * M); // rest-frame momentum
double denom = std::sqrt(pMother * pMother + mDaughter * mDaughter);
double sinTheta = pStar / denom;
if (sinTheta > 1.0)
sinTheta = 1.0;
return std::asin(sinTheta) * o2::constants::math::Rad2Deg;
double num = M * beta; // rest-frame momentum
double denom = std::sqrt(pMother * pMother * (1 - beta * beta) - (M * M * beta * beta));
double tanTheta = num / denom;
return std::atan(tanTheta) * o2::constants::math::Rad2Deg;
}

double f1(double p) // K → μ ν
{
double betak = 0.9127037;
return maxKinkAngle(p,
o2::constants::physics::MassKaonCharged,
o2::constants::physics::MassMuon);
betak);
}

inline double f2(double p) // π → μ ν
{
double betapi = 0.2731374;
return maxKinkAngle(p,
o2::constants::physics::MassPionCharged,
o2::constants::physics::MassMuon);
betapi);
}

void processData(CollisionsFull::iterator const& collision, aod::KinkCands const& KinkCands, TracksFull const&)
Expand Down Expand Up @@ -668,7 +668,7 @@
double maxDecAngKmu = f1(pMoth);
double maxDecAngPimu = f2(pMoth);

if (maxkinkanglecut && (kinkangle > maxDecAngKmu * 0.98) && (pMoth > 1.2))

Check failure on line 671 in PWGLF/Tasks/Nuspex/spectraKinkPiKa.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
continue;
if (maxkinkanglecut && kinkangle <= maxDecAngPimu * 1.2)
continue;
Expand Down Expand Up @@ -744,7 +744,7 @@
rEventSelection.fill(HIST("hVertexZRec"), collision.posZ());
rEventSelection.fill(HIST("hMultiplicity"), multiplicity);

auto kinkCandPerColl = KinkCands.sliceBy(mPerCol, collision.globalIndex());
auto kinkCandPerColl = KinkCands.sliceBy(mPerCol, collision.index());
for (const auto& kinkCand : kinkCandPerColl) {
auto dauTrack = kinkCand.trackDaug_as<TracksFull>();
auto mothTrack = kinkCand.trackMoth_as<TracksFull>();
Expand All @@ -754,9 +754,9 @@
if (mothTrack.collisionId() != dauTrack.collisionId()) {
continue; // skip mismatched collision tracks
}
if (mothTrack.collisionId() != collision.globalIndex()) {
continue; // not from this event
}
// if (mothTrack.collisionId() != collision.globalIndex()) {
// continue; // not from this event
// }
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
Expand Down Expand Up @@ -847,12 +847,15 @@
double maxDecAngKmu = f1(pMoth);
double maxDecAngPimu = f2(pMoth);

if (maxkinkanglecut && (kinkangle > maxDecAngKmu * 0.98) && (pMoth > 1.2))

Check failure on line 850 in PWGLF/Tasks/Nuspex/spectraKinkPiKa.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
continue;
if (maxkinkanglecut && kinkangle <= maxDecAngPimu * 1.2)
continue;

rpiKkink.fill(HIST("h1_tracks"), 12.0);
if (std::abs(v0.Rapidity()) > rapCut) {
continue;
}
if (additionalhist) {
rpiKkink.fill(HIST("h2_moth_pt_vs_eta_rec"), v0.Pt(), v0.Eta(), multiplicity);
rpiKkink.fill(HIST("h2_dau_pt_vs_eta_rec"), v1.Pt(), v1.Eta(), multiplicity);
Expand Down
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