[Blackmax] Inquiries

[Khalife Ali Rida]

Good Day

My name is Ali Rida Khalifeh, I'm a research assistant at Texas A&M
University Qatar. I'm working on a project which uses BlackMax, and I have
a few questions if you could please answer:
1- The generated cross-section is very small (10^-10 pb roughly). How can
I increase it?
2- In calculating the horizon radius of the BH, a parameter "a" is used
that is related to the angular momentum. How can I find this "a" in the
code?

I appreciate your kind help and reply
Best Regards
Ali