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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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14 changes: 11 additions & 3 deletions PWGCF/Femto/Core/cascadeBuilder.h
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,8 @@ struct ConfCascadeFilters : o2::framework::ConfigurableGroup {
// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
#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<std::vector<std::string>> cascadeCpaMin{"cascadeCpaMin", {"0.95"}, "Minimum CPA as TFormula, x=pt"}; \
o2::framework::Configurable<std::vector<std::string>> cascadePaMax{"cascadePaMax", {}, "Maximum pointing angle (rad) as TFormula, x=pt. Empty to disable"}; \
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 @@ -128,6 +129,7 @@ struct ConfOmegaSelection : o2::framework::ConfigurableGroup {
enum CascadeSels {
// selections for cascades
kCascadeCpaMin, ///< Min. CPA (cosine pointing angle)
kCascadePaMax, ///< Max. PA (pointing angle in rad); disabled by default
kCascadeDcaDaughMax, ///< Max. DCA of the daughers at decay vertex
kCascadeTransRadMin, ///< max. transverse radius

Expand Down Expand Up @@ -162,6 +164,7 @@ constexpr char OmegaSelHistName[] = "hOmegaSelection";
constexpr char CascadeSelsName[] = "Cascade Selection Object";
const std::unordered_map<CascadeSels, std::string> cascadeSelectionNames = {
{kCascadeCpaMin, "Cascade CPA Min"},
{kCascadePaMax, "Cascade PA Max"},
{kCascadeDcaDaughMax, "Cascade DCA Daughters Max"},
{kCascadeTransRadMin, "Cascade Transverse Radius Min"},

Expand Down Expand Up @@ -270,7 +273,8 @@ 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);
this->addSelection(kCascadeCpaMin, cascadeSelectionNames.at(kCascadeCpaMin), filter.ptMin.value, filter.ptMax.value, config.cascadeCpaMin.value, limits::kLowerFunctionLimit, true, true, false);
this->addSelection(kCascadePaMax, cascadeSelectionNames.at(kCascadePaMax), filter.ptMin.value, filter.ptMax.value, config.cascadePaMax.value, limits::kUpperFunctionLimit, 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 @@ -307,7 +311,11 @@ class CascadeSelection : public baseselection::BaseSelection<float, o2::analysis
{
this->reset();
// cascade selections
this->evaluateObservable(kCascadeCpaMin, cascade.casccosPA(col.posX(), col.posY(), col.posZ()));
const float cpa = cascade.casccosPA(col.posX(), col.posY(), col.posZ());
this->updateLimits(kCascadeCpaMin, cascade.pt());
this->evaluateObservable(kCascadeCpaMin, cpa);
this->updateLimits(kCascadePaMax, cascade.pt());
this->evaluateObservable(kCascadePaMax, std::acos(cpa));
this->evaluateObservable(kCascadeDcaDaughMax, cascade.dcacascdaughters());
this->evaluateObservable(kCascadeTransRadMin, cascade.cascradius());

Expand Down
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