MadGraph5_aMC@NLO

Setting Yukawa Couplings to Zero in UFO file

Asked by shibasipu

Dear Olivier,
                          I have successfully generated the UFO files for a new physics model. Now I want certain yukawa couplings to zero.
Can I directly set those yukawa coupling to zero in the "coupling.py" file ? Then I will import this model again in MG5. Will it work ?

Regards,
Shiba

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
No assignee Edit question
Solved by:
Olivier Mattelaer
Solved:
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 #2312: “FR Model much slower than build-in MG model. Why and how to fix?”.

Revision history for this message
shibasipu (shibasipu) said : 		#2

Dear Olivier,
                         i am not worried about speed. I want to put the yukawa couplings to zero and then do gauge invariance check.
Can I directly set those yukawa coupling to zero in the "coupling.py" file ? Then I will import this model again in MG5. Will it work ?

Regards,
Shiba

Revision history for this message
Best Olivier Mattelaer (olivier-mattelaer) said : 		#3

The best way is to use the method that is describe in the FAQ (independently of the speed).
But your method should work. If you restart MG5 between the two.
In case, that it does not, please remove all file with extension .pkl from the model.

Cheers,

Olivier

> On Oct 22, 2015, at 11:13, shibasipu <email address hidden> wrote:
>
> Question #272723 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/272723
>
> Status: Answered => Open
>
> shibasipu is still having a problem:
> Dear Olivier,
> i am not worried about speed. I want to put the yukawa couplings to zero and then do gauge invariance check.
> Can I directly set those yukawa coupling to zero in the "coupling.py" file ? Then I will import this model again in MG5. Will it work ?
>
>
>
>
>
> Regards,
> Shiba
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
shibasipu (shibasipu) said : 		#4

Thanks Olivier Mattelaer, that solved my question.