[PWGCF] Added a number of track selection configurable parameters (#15135)

Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: JStaa

PWGCF/MultiparticleCorrelations/Tasks/threeParticleCorrelations.cxx

@@ -79,6 +79,9 @@ struct ThreeParticleCorrelations {
   float pionPtMid1 = 1.6, pionPtMid2 = 2.0, kaonPtMid1 = 1.5, kaonPtMid2 = 2.0, protonPtMid = 2.3;
   struct : ConfigurableGroup {
     std::string prefix = "TrackSelection";
+    Configurable<float> chi2PerClusterTPC{"chi2PerClusterTPC", 4.0, "Maximum TPC goodness-of-fit Chi2 per cluster"};
+    Configurable<float> chi2PerClusterITS{"chi2PerClusterITS", 36.0, "Maximum ITS goodness-of-fit Chi2 per cluster"};
+    Configurable<float> dcaZ{"dcaZ", 2.0, "Maximum longitudinal DCA (cm)"};
     Configurable<float> nSigmaTPCvar{"nSigmaTPCvar", 0.0, "Variation in the TPC nSigma"};
     Configurable<float> nSigmaTOFvar{"nSigmaTOFvar", 0.0, "Variation in the TOF nSigma"};
   } trackSelGroup;
@@ -117,7 +120,7 @@ struct ThreeParticleCorrelations {
   // Table aliases - Data
   using MyFilteredCollisions = soa::Filtered<soa::Join<aod::Collisions, aod::CentFT0Cs, aod::EvSels>>;
   using MyFilteredCollision = MyFilteredCollisions::iterator;
-  using MyFilteredTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksExtra, aod::TrackSelection,
+  using MyFilteredTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksExtra, aod::TracksDCA, aod::TrackSelection,
                                                    aod::pidTPCPi, aod::pidTPCKa, aod::pidTPCPr,
                                                    aod::pidTOFFullPi, aod::pidTOFFullKa, aod::pidTOFFullPr, aod::pidTOFbeta>>;
 
@@ -130,7 +133,7 @@ struct ThreeParticleCorrelations {
   using MCRecCollisions = soa::Join<aod::Collisions, aod::CentFT0Cs, aod::EvSels, aod::McCollisionLabels>;
   using MyFilteredMCRecCollisions = soa::Filtered<MCRecCollisions>;
   using MyMCV0s = soa::Join<aod::V0Datas, aod::McV0Labels>;
-  using MyFilteredMCTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksExtra, aod::TrackSelection, aod::McTrackLabels,
+  using MyFilteredMCTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksExtra, aod::TracksDCA, aod::TrackSelection, aod::McTrackLabels,
                                                      aod::pidTPCPi, aod::pidTPCKa, aod::pidTPCPr,
                                                      aod::pidTOFFullPi, aod::pidTOFFullKa, aod::pidTOFFullPr, aod::pidTOFbeta>>;
 
@@ -1108,6 +1111,13 @@ struct ThreeParticleCorrelations {
   bool trackFilters(const TrackCand& track) // Track filter
   {
 
+    if (track.tpcChi2NCl() > trackSelGroup.chi2PerClusterTPC || track.itsChi2NCl() > trackSelGroup.chi2PerClusterITS) {
+      return false;
+    }
+    if (track.dcaZ() > trackSelGroup.dcaZ) {
+      return false;
+    }
+
     if (!track.hasTOF()) {
       return false;
     }