MadGraph5_aMC@NLO

Unexpected cross _section in MSSM with decay chain

Asked by AFSAR REJA

Hi ,

  I am calculating cross section for the following processes with the model MSSM_SLHA2

1. p p > x1+ n2 .
2. p p > x1+ n2 ,( x1+ > w+ n1 , w+ > l+ vl ).

I am getting cross sect. for process 2 is greater than process 1.

Regards ,
reja

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

Olivier Mattelaer suggests this article as an answer to your question:
FAQ #2442: “why production and decay cross-section didn't agree.”.

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Olivier Mattelaer (olivier-mattelaer) said : 		#2

The faq should help you,
The likely reason in your case is tthat you use unphysical width for x1+

Cheers,

Olivier

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