3 to 3 processes

Asked by Matt on 2018-10-10

Dear MG staff,

I am trying to compute a LNV process amplitude with 3 particles in the initial state and 3 in the final, such as:
e+ u~ d > e- u d~
that in my model is supposed to be mediated by a Majorana neutrino.
It seems that MG_2_6_0 can generate the process, but when creating the output the following error comes out:

FortranWriterError : Need ninitial = 1 or 2 to write auto_dsig file

my question is: is this possible to compute this kind of 3 to 3 processes in MG 5?

Thanks in advance.
Cheers,

Matteo

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
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Solved by:
Olivier Mattelaer
Solved:
2018-10-10
Last query:
2018-10-10
Last reply:
2018-10-10

No this is not supported.

Cheers,

Olivier

> On 10 Oct 2018, at 11:32, Matt <email address hidden> wrote:
>
> New question #674960 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/674960
>
> Dear MG staff,
>
> I am trying to compute a LNV process amplitude with 3 particles in the initial state and 3 in the final, such as:
> e+ u~ d > e- u d~
> that in my model is supposed to be mediated by a Majorana neutrino.
> It seems that MG_2_6_0 can generate the process, but when creating the output the following error comes out:
>
> FortranWriterError : Need ninitial = 1 or 2 to write auto_dsig file
>
> my question is: is this possible to compute this kind of 3 to 3 processes in MG 5?
>
> Thanks in advance.
> Cheers,
>
> Matteo
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Matt (elvin.j) said : #2

Thanks Olivier Mattelaer, that solved my question.