[PWGLF] V0s vs multiplicity: Add v0type selection (#9658)

Author: ercolessi

PWGLF/TableProducer/Strangeness/v0qaanalysis.cxx

@@ -141,6 +141,7 @@ struct LfV0qaanalysis {
   Configurable<bool> isNoITSROFrameBorder{"isNoITSROFrameBorder", 1, "Is No ITS Readout Frame Border"};
   Configurable<bool> isVertexTOFmatched{"isVertexTOFmatched", 0, "Is Vertex TOF matched"};
   Configurable<bool> isGoodZvtxFT0vsPV{"isGoodZvtxFT0vsPV", 0, "isGoodZvtxFT0vsPV"};
+  Configurable<int> v0TypeSelection{"v0TypeSelection", 1, "select on a certain V0 type (leave negative if no selection desired)"};
 
   // V0 selection criteria
   Configurable<double> v0cospa{"v0cospa", 0.97, "V0 CosPA"};
@@ -205,6 +206,9 @@ struct LfV0qaanalysis {
 
     for (auto& v0 : V0s) { // loop over V0s
 
+      if (v0.v0Type() != v0TypeSelection) {
+        continue;
+      }
       // c tau
       float ctauLambda = v0.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * o2::constants::physics::MassLambda0;
       float ctauAntiLambda = v0.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * o2::constants::physics::MassLambda0Bar;
@@ -299,6 +303,10 @@ struct LfV0qaanalysis {
           continue;
         }
 
+        if (v0.v0Type() != v0TypeSelection) {
+          continue;
+        }
+
         // Highest numerator of efficiency
         if (v0mcparticle.isPhysicalPrimary()) {
           if (v0mcparticle.pdgCode() == 310) {