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[PWGCF] Femto: Add optional pT-dependent CPA selection for cascades #17431

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[PWGCF] Femto: Add optional pT-dependent CPA selection for cascades #17431

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13 changes: 12 additions & 1 deletion PWGCF/Femto/Core/cascadeBuilder.h
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,8 @@ struct ConfCascadeFilters : o2::framework::ConfigurableGroup {
#define CASCADE_DEFAULT_BITS \
o2::framework::Configurable<bool> passThrough{"passThrough", false, "If true, all Cascades are passed through. Bits for all selections are stored."}; \
o2::framework::Configurable<std::vector<float>> cascadeCpaMin{"cascadeCpaMin", {0.95f}, "Minimum cosine of pointing angle"}; \
o2::framework::Configurable<bool> cascadeCpaPtDependent{"cascadeCpaPtDependent", false, "If true, use cascadeCpaMinFormula instead of cascadeCpaMin"}; \
o2::framework::Configurable<std::vector<std::string>> cascadeCpaMinFormula{"cascadeCpaMinFormula", {"0.95"}, "Minimum CPA as TFormula, x=pt"}; \
o2::framework::Configurable<std::vector<float>> cascadeTransRadMin{"cascadeTransRadMin", {0.9f}, "Minimum transverse radius (cm)"}; \
o2::framework::Configurable<std::vector<float>> cascadeDcaDauMax{"cascadeDcaDauMax", {0.25f}, "Maximum DCA between the daughters at decay vertex (cm)"}; \
o2::framework::Configurable<std::vector<float>> lambdaCpaMin{"lambdaCpaMin", {0.78f}, "Minimum cosine of pointing angle"}; \
Expand Down Expand Up @@ -243,6 +245,7 @@ class CascadeSelection : public baseselection::BaseSelection<float, o2::analysis
mPhiMax = filter.phiMax.value;
mLambdaMassMin = filter.massLambdaMin.value;
mLambdaMassMax = filter.massLambdaMax.value;
mCpaPtDependent = config.cascadeCpaPtDependent.value;
mRequireTof = config.requireTof.value;
mKeepTracksWithoutTof = config.keepTracksWithoutTof.value;

Expand Down Expand Up @@ -270,7 +273,11 @@ class CascadeSelection : public baseselection::BaseSelection<float, o2::analysis
this->addSelection(kPosDauTof, cascadeSelectionNames.at(kPosDauTof), config.posDauTof.value, limits::kAbsUpperLimit, true, mRequireTof, false);
this->addSelection(kNegDauTof, cascadeSelectionNames.at(kNegDauTof), config.negDauTof.value, limits::kAbsUpperLimit, true, mRequireTof, false);

this->addSelection(kCascadeCpaMin, cascadeSelectionNames.at(kCascadeCpaMin), config.cascadeCpaMin.value, limits::kLowerLimit, true, true, false);
if (mCpaPtDependent) {
this->addSelection(kCascadeCpaMin, cascadeSelectionNames.at(kCascadeCpaMin), filter.ptMin.value, filter.ptMax.value, config.cascadeCpaMinFormula.value, limits::kLowerFunctionLimit, true, true, false);
} else {
this->addSelection(kCascadeCpaMin, cascadeSelectionNames.at(kCascadeCpaMin), config.cascadeCpaMin.value, limits::kLowerLimit, true, true, false);
}
this->addSelection(kCascadeTransRadMin, cascadeSelectionNames.at(kCascadeTransRadMin), config.cascadeTransRadMin.value, limits::kLowerLimit, true, true, false);
this->addSelection(kCascadeDcaDaughMax, cascadeSelectionNames.at(kCascadeDcaDaughMax), config.cascadeDcaDauMax.value, limits::kUpperLimit, true, true, false);
this->addSelection(kLambdaCpaMin, cascadeSelectionNames.at(kLambdaCpaMin), config.lambdaCpaMin.value, limits::kLowerLimit, true, true, false);
Expand Down Expand Up @@ -307,6 +314,9 @@ class CascadeSelection : public baseselection::BaseSelection<float, o2::analysis
{
this->reset();
// cascade selections
if (mCpaPtDependent) {
this->updateLimits(kCascadeCpaMin, cascade.pt());
}
this->evaluateObservable(kCascadeCpaMin, cascade.casccosPA(col.posX(), col.posY(), col.posZ()));
this->evaluateObservable(kCascadeDcaDaughMax, cascade.dcacascdaughters());
this->evaluateObservable(kCascadeTransRadMin, cascade.cascradius());
Expand Down Expand Up @@ -489,6 +499,7 @@ class CascadeSelection : public baseselection::BaseSelection<float, o2::analysis
float mPhiMax = o2::constants::math::TwoPI;
float mLambdaMassMin = 1.f;
float mLambdaMassMax = 1.2f;
bool mCpaPtDependent = false;
bool mRequireTof = false;
bool mKeepTracksWithoutTof = false;
};
Expand Down
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