WIP: Try out Dummy

include/util.h

@@ -86,7 +86,7 @@ namespace util {
       const double px = part.p.x;
       const double py = part.p.y;
       const double pz = part.p.z;
-      const double mass = part.mass;
+      const double mass = 0.;
       return ROOT::Math::PxPyPzMVector{px, py, pz, mass};
     });
     return momenta;