Does anyone use the Feynrules Mathematica package? I'd like to know how could I write this vertex explicitly with sum on all indices
((MD- Me CKM11) /4 vev) dbar.ProjM. d X
X is scalar particle
So I'd like to write some thing like :
((Md IndexDelta[i,j] - Ml CKM[i,j])/4 vev)( SR dqbar[i].ProjM. dq[j] );
This expression give me errors on FeynRules. so what do you think the right for it?