Name: Francsco Date: 07/10/16-12:43:26 PM Z
Hi Vladyslav,
thank you for yours suggestions.
I implemented 8-dimensional operator with 4 fermions and 2 derivatives
(via an auxiliary field). Everything seems work well expect when I have
to convert the amplitude.
This time, there are some momentum on the numerator and I think that the
FCFAConvert function doesn’t convert properly the scalar products. In
fact, I get some terms like (-k1).(k1 - p2) which is different form
-Pair[Momentum[k1], Momentum[k1 - p2]]. With
this last expression, I can simplify my expression using
ExpandScalarProduct and using Mandelstam variables.
As usual, you find my model and the notebook here https://www.dropbox.com/sh/hm77oyedcb3p055/AABzBlEPZvcPjAstjoclCR3ya?dl=0