Add J/psi resolution; re-write RC with Dummy instead of rc tracks

include/util.h

@@ -88,7 +88,7 @@ namespace util {
       const double py = 0.;
       const double pz = 0.;
       const double mass = 0.;*/
-      return ROOT::Math::PxPyPzMVector{part.p.x, part.p.y, part.p.z, part.mass};
+      return ROOT::Math::PxPyPzMVector{part.p.x, part.p.y, part.p.z, part.mass()};
     });
     return momenta;
   }