MadGraph5_aMC@NLO

How to get matrix element squared of a process in a particular phase space point in Madgraph ?

Asked by Deep Ghosh

I am trying to get cross-section of four fermi interaction in madgraph. The model has been written using Feynrules. The problem is that the analytic calculation and the result given by Madgraph are different and the error changes as I change the centre of mass energy. Therefore, I wish to check the matrix element squared without integrating the phase space. Can it be done using Madgraph ?

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Olivier Mattelaer suggests this article as an answer to your question:
FAQ #2746: “Can I just calculate the amplitudes for a (sub)process and check them point-by-point in phase space points (in fortran/C++/Python)”.

Can you help with this problem?

Provide an answer of your own, or ask Deep Ghosh for more information if necessary.

To post a message you must log in.