[PWGLF] Protect against accidental acceptance of TPC-only V0s (#10908)

Co-authored-by: David Dobrigkeit Chinellato <david.dobrigkeit.chinellato.cern.ch>
Co-authored-by: ALICE Builder <alibuild@users.noreply.github.com>

Author: ddobrigk

PWGLF/TableProducer/Strangeness/strangenessbuilder.cxx

@@ -818,7 +818,7 @@ 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)) {
+            if (straHelper.buildV0Candidate<false>(v0tableGrouped[iV0].collisionIds[ic], collision.posX(), collision.posY(), collision.posZ(), pTrack, nTrack, posTrackPar, negTrackPar, true, false, true)) {
               // candidate built, check pointing angle
               if (straHelper.v0.pointingAngle < bestPointingAngle) {
                 bestPointingAngle = straHelper.v0.pointingAngle;
@@ -1294,7 +1294,7 @@ struct StrangenessBuilder {
         }
       }
 
-      if (!straHelper.buildV0Candidate(v0.collisionId, pvX, pvY, pvZ, posTrack, negTrack, posTrackPar, negTrackPar, v0.isCollinearV0, mEnabledTables[kV0Covs])) {
+      if (!straHelper.buildV0Candidate(v0.collisionId, pvX, pvY, pvZ, posTrack, negTrack, posTrackPar, negTrackPar, v0.isCollinearV0, mEnabledTables[kV0Covs], true)) {
         products.v0dataLink(-1, -1);
         continue;
       }

PWGLF/Utils/strangenessBuilderHelper.h

@@ -272,7 +272,8 @@ class strangenessBuilderHelper
                         TTrackParametrization& positiveTrackParam,
                         TTrackParametrization& negativeTrackParam,
                         bool useCollinearFit = false,
-                        bool calculateCovariance = false)
+                        bool calculateCovariance = false,
+                        bool acceptTPCOnly = false)
   {
     if constexpr (useSelections) {
       // verify track quality
@@ -293,6 +294,14 @@ class strangenessBuilderHelper
         v0 = {};
         return false;
       }
+      if (!acceptTPCOnly && !positiveTrack.hasITS()) {
+        v0 = {};
+        return false;
+      }
+      if (!acceptTPCOnly && !negativeTrack.hasITS()) {
+        v0 = {};
+        return false;
+      }
     }
 
     // Calculate DCA with respect to the collision associated to the V0
@@ -624,7 +633,7 @@ class strangenessBuilderHelper
     auto posTrackPar = getTrackParCov(positiveTrack);
     auto negTrackPar = getTrackParCov(negativeTrack);
 
-    if (!buildV0Candidate(collisionIndex, pvX, pvY, pvZ, positiveTrack, negativeTrack, posTrackPar, negTrackPar, false, processCovariances)) {
+    if (!buildV0Candidate(collisionIndex, pvX, pvY, pvZ, positiveTrack, negativeTrack, posTrackPar, negTrackPar, false, processCovariances, false)) {
       return false;
     }
     if (!buildCascadeCandidate(collisionIndex, pvX, pvY, pvZ, v0, positiveTrack, negativeTrack, bachelorTrack, calculateBachelorBaryonVariables, useCascadeMomentumAtPV, processCovariances)) {