Hi Rohit, sure, I'm attaching a notebook of the Feyncalc solution, but keep in mind that my question is how to do it WITHOUT Feyncalc. Unfortunately, FeynCalc does not seem to be functioning properly on my computer, and when I try to download and re-install it the reinstallation fails. So that's one reason why I'd like to see how to solve it without Feyncalc.
Attachments:
