MadGraph5_aMC@NLO

Output standalone_cpp for MSSM processes

Asked by Ponf

I'm trying to get the matrix element for squark gluino production so I'm doing the following

import model mssm
define sq=ul ur ul~ ur~ dl dr dl~ dr~ cl cr cl~ cr~ sl sr sl~ sr~
generate p p > sq go
output standalone_cpp cpp

Unfortunately I'm getting an "InvalidCmd" error:

The Model imported (MG4 format) does not contain enough
  information for this type of output. In order to create
  output for cpp, you have to use a UFO model.
  Those model can be imported with MG5> import model NAME.
  Command "output standalone_cpp cpp" interrupted with error:
  InvalidCmd :

Are MSSM processes not supported out of the box?

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Solved by:
Olivier Mattelaer
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Best Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

The “mssm” model does not exists in UFO format (it has been removed since 2.5.0 and replaced by MSSM_SLHA2)
When you do import model mssm, you are actually using the mssm_v4 model which is a pure fortran model (SLHA1) and which is not compatible with C++ output.

So if you switch to MSSM_SLHA2 model it should go trough.

Cheers,

Olivier
> On 4 May 2017, at 15:57, Ponf <email address hidden> wrote:
>
> New question #631142 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/631142
>
> I'm trying to get the matrix element for squark gluino production so I'm doing the following
>
> import model mssm
> define sq=ul ur ul~ ur~ dl dr dl~ dr~ cl cr cl~ cr~ sl sr sl~ sr~
> generate p p > sq go
> output standalone_cpp cpp
>
> Unfortunately I'm getting an "InvalidCmd" error:
>
> The Model imported (MG4 format) does not contain enough
> information for this type of output. In order to create
> output for cpp, you have to use a UFO model.
> Those model can be imported with MG5> import model NAME.
> Command "output standalone_cpp cpp" interrupted with error:
> InvalidCmd :
>
> Are MSSM processes not supported out of the box?
>
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Ponf (ponf) said : 		#2

Thanks Olivier Mattelaer, that solved my question.