Name: Francesco Date: 11/15/17-12:59:48 PM Z
Hello,
I need to compute a 2->4 amplitude within a model I created.
In order to simplify the expression for the amplitude, is there a way to
use the generalised Mandelstam variables like
s_{i1i2..i4}=(p_i1+…+p_i4)^2
and the others possible combinations?
thanks