PWGLF/Strangeness: add possibility to accept ITSsa tracks in strangenessbuilder.cxx

Author: dsekihat

PWGLF/TableProducer/Strangeness/strangenessbuilder.cxx

@@ -318,6 +318,7 @@ struct StrangenessBuilder {
     Configurable<float> dcav0dau{"dcav0dau", 1.0, "DCA V0 Daughters"};
     Configurable<float> v0radius{"v0radius", 0.9, "v0radius"};
     Configurable<float> maxDaughterEta{"maxDaughterEta", 5.0, "Maximum daughter eta (in abs value)"};
+    Configurable<bool> acceptITSonly{"acceptITSonly", false, "flag to accept ITSonly tracks"};
 
     // MC builder options
     Configurable<bool> mc_populateV0MCCoresSymmetric{"mc_populateV0MCCoresSymmetric", false, "populate V0MCCores table for derived data analysis, keep V0MCCores joinable with V0Cores"};
@@ -947,7 +948,7 @@ struct StrangenessBuilder {
             // process candidate with helper, generate properties for consulting
             // <false>: do not apply selections: do as much as possible to preserve
             // candidate at this level and do not select with topo selections
-            if (straHelper.buildV0Candidate<false>(v0tableGrouped[iV0].collisionIds[ic], collision.posX(), collision.posY(), collision.posZ(), pTrack, nTrack, posTrackPar, negTrackPar, true, false, true)) {
+            if (straHelper.buildV0Candidate<false>(v0tableGrouped[iV0].collisionIds[ic], collision.posX(), collision.posY(), collision.posZ(), pTrack, nTrack, posTrackPar, negTrackPar, true, false, true, v0BuilderOpts.acceptITSonly)) {
               // candidate built, check pointing angle
               if (straHelper.v0.pointingAngle < bestPointingAngle) {
                 bestPointingAngle = straHelper.v0.pointingAngle;
@@ -1425,7 +1426,7 @@ struct StrangenessBuilder {
         }
       }
 
-      if (!straHelper.buildV0Candidate(v0.collisionId, pvX, pvY, pvZ, posTrack, negTrack, posTrackPar, negTrackPar, v0.isCollinearV0, mEnabledTables[kV0Covs], true)) {
+      if (!straHelper.buildV0Candidate(v0.collisionId, pvX, pvY, pvZ, posTrack, negTrack, posTrackPar, negTrackPar, v0.isCollinearV0, mEnabledTables[kV0Covs], true, v0BuilderOpts.acceptITSonly)) {
         products.v0dataLink(-1, -1);
         continue;
       }

PWGLF/Utils/strangenessBuilderHelper.h

@@ -273,15 +273,16 @@ class strangenessBuilderHelper
                         TTrackParametrization& negativeTrackParam,
                         bool useCollinearFit = false,
                         bool calculateCovariance = false,
-                        bool acceptTPCOnly = false)
+                        bool acceptTPCOnly = false,
+                        bool acceptITSOnly = false)
   {
     if constexpr (useSelections) {
       // verify track quality
-      if (positiveTrack.tpcNClsCrossedRows() < v0selections.minCrossedRows) {
+      if (!acceptITSOnly && positiveTrack.tpcNClsCrossedRows() < v0selections.minCrossedRows) {
         v0 = {};
         return false;
       }
-      if (negativeTrack.tpcNClsCrossedRows() < v0selections.minCrossedRows) {
+      if (!acceptITSOnly && negativeTrack.tpcNClsCrossedRows() < v0selections.minCrossedRows) {
         v0 = {};
         return false;
       }