Added Lambda1520 PDG code to PhysicsConstants.h

Author: hkoley

Common/Constants/include/CommonConstants/PhysicsConstants.h

@@ -88,7 +88,8 @@ enum Pdg {
   kHyperHydrogen4 = 1010010040,
   kHyperHelium4 = 1010020040,
   kHyperHelium5 = 1010020050,
-  kHyperHelium4Sigma = 1110020040
+  kHyperHelium4Sigma = 1110020040,
+  kLambda1520 = 102134
 };
 
 /// \brief Declarations of masses for additional particles