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[PWGCF] Addition of DCAxy Nsigma cut #13899

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Merged
victor-gonzalez merged 4 commits into from
Nov 20, 2025
Merged

[PWGCF] Addition of DCAxy Nsigma cut #13899

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aaa35b9
Addition of multiplicity correlation cuts
Nov 17, 2025
605f31d
Addition of DCAxy Nsigma
Nov 19, 2025
35a3be9
Please consider the following formatting changes
alibuild Nov 19, 2025
1ba1070
Merge pull request #31 from alibuild/alibot-cleanup-13899
Preet-Bhanjan Nov 19, 2025
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9 changes: 9 additions & 0 deletions PWGCF/TwoParticleCorrelations/Tasks/pidDiHadron.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -135,6 +135,8 @@ struct PidDiHadron {
O2_DEFINE_CONFIGURABLE(cfgMultMultV0ALowCutFunction, std::string, "[0] + [1]*x + [2]*x*x + [3]*x*x*x + [4]*x*x*x*x - 3.*([5] + [6]*x + [7]*x*x + [8]*x*x*x + [9]*x*x*x*x)", "Functional for multiplicity correlation cut");
O2_DEFINE_CONFIGURABLE(cfgMultMultV0ACutEnabled, bool, false, "Enable global multiplicity vs V0A multiplicity cut")
Configurable<std::vector<double>> cfgMultMultV0ACutPars{"cfgMultMultV0ACutPars", std::vector<double>{534.893, 184.344, 0.423539, -0.00331436, 5.34622e-06, 871.239, 53.3735, -0.203528, 0.000122758, 5.41027e-07}, "Global multiplicity vs V0A multiplicity cut parameter values"};
O2_DEFINE_CONFIGURABLE(cfgDCAxyNSigma, float, 7, "Cut on number of sigma deviations from expected DCA in the transverse direction");
O2_DEFINE_CONFIGURABLE(cfgDCAxy, std::string, "(0.0026+0.005/(x^1.01))", "Functional form of pt-dependent DCAxy cut");
std::vector<double> multT0CCutPars;
std::vector<double> multPVT0CCutPars;
std::vector<double> multGlobalPVCutPars;
Expand All @@ -149,6 +151,7 @@ struct PidDiHadron {
TF1* fMultMultV0ACutHigh = nullptr;
TF1* fT0AV0AMean = nullptr;
TF1* fT0AV0ASigma = nullptr;
TF1* fPtDepDCAxy = nullptr;
} cfgFuncParas;

SliceCache cache;
Expand Down Expand Up @@ -462,6 +465,10 @@ struct PidDiHadron {
cfgFuncParas.fT0AV0ASigma->SetParameters(463.4144, 6.796509e-02, -9.097136e-07, 7.971088e-12, -2.600581e-17);
}

cfgFuncParas.fPtDepDCAxy = new TF1("ptDepDCAxy", Form("[0]*%s", cfgFuncParas.cfgDCAxy->c_str()), 0.001, 100);
cfgFuncParas.fPtDepDCAxy->SetParameter(0, cfgFuncParas.cfgDCAxyNSigma);
LOGF(info, "DCAxy pt-dependence function: %s", Form("[0]*%s", cfgFuncParas.cfgDCAxy->c_str()));

std::string hCentTitle = "Centrality distribution, Estimator " + std::to_string(cfgCentEstimator);
// Make histograms to check the distributions after cuts
if (doprocessSame || doprocessSameReso) {
Expand Down Expand Up @@ -578,6 +585,8 @@ struct PidDiHadron {
template <typename TTrack>
bool trackSelected(TTrack track)
{
if (cfgFuncParas.cfgDCAxyNSigma && (std::fabs(track.dcaXY()) > cfgFuncParas.fPtDepDCAxy->Eval(track.pt())))
return false;
return ((track.tpcNClsFound() >= cfgTpcCluster) && (track.tpcNClsCrossedRows() >= cfgTpcCrossRows) && (track.itsNCls() >= cfgITScluster));
}

Expand Down
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