- #1
- 726
- 3
I am wondering whether someone can suggest a good ref or two (preferrably with worked example) on how to use Cutkosky (or whatever it is called) cutting rules in QFT to help pick out the absorptive/Imaginary part of a 1- or 2-loops diagrams. I have already tried Peskin and Schroeder, which is good only up to a certain level.
are there actually improved version of these cutting rules these days?
thanks in advance
are there actually improved version of these cutting rules these days?
thanks in advance