stop quark decay

The model that you use do not have such coupling/interaction.
You should use another model.

Did you try
MSSM_SLHA2-full

Cheers,

Olivier
> On 13 Feb 2017, at 00:53, Dong Xu <email address hidden> wrote:
>
> New question #455773 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/455773
>
> Hi,
> In model mssm, I would like stop quark to decay to charm quark c and neutralino, but Madgraph says this is not a valid process,
>
> generate t1 > c n1
>
> Command "generate t1 > c n1" interrupted with error:
> NoDiagramException : No amplitudes generated from process Process: t1 > c n1 @1. Please enter a valid process
>
> So, can you tell me how to generate this process? Thanks!
>
> Best,
> Dong
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hi, Olivier,
MSSM_SLHA2_full is not in the "model" file, there is MSSM_SLHA2. But it can't work, either.

Command "generate t1 > c n1" interrupted with error:
NoDiagramException : No amplitudes generated from process Process: t1 > c n1 @1. Please enter a valid process

Best,
Dong Xu

it should be
MSSM_SLHA2-full

If this does not work, then you need to find a model which has it on FeynRules website (or Sarah) or create it yourself if this does not exists yet.

Cheers,

Olivier

it should be
MSSM_SLHA2-full

If this does not work, then you need to find a model which has it on FeynRules website (or Sarah) or create it yourself if this does not exists yet.

Cheers,

Olivier

Thanks Olivier.