[Rivet] Access to transverse and longitudinal impact parameters

[Markus Radziej]

Hi,

I was wondering if there is some way to access the impact parameter 
information via Rivet? I have tried looking into other analyses, but 
could not find one that works with these variables. I'm not quite sure 
the information even exists, so I decided to write an email.

Thanks for your help,
Markus Radziej