MadGraph5_aMC@NLO

Generating cross section curve for coupling

Asked by Mamutjan

I want a curve of cross-section (Y axis) change for different values of anomalous-coupling (X axis).

Currently, I have to change anomalous coupling value in param_card to to get *a single cross-section*.
What I need is a continuous cross-section value for continuous value of anomalous coupling (i.e. 0 to 5); Preferably the resulting graphic.

There should be a way to automate this process. How can I do it?

PS: I know some programming and scripting.

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

You just have to loop over a binning of your anomalous coupling value.

You have two way to do it:
1) simple scanning over the parameter space:
https://answers.launchpad.net/mg5amcnlo/+faq/2186
2) use the reweighing method:
https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/Reweight

Cheers,

Olivier

On 26 Mar 2015, at 23:46, Mamutjan <email address hidden> wrote:

> New question #264192 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/264192
>
> I want a curve of cross-section (Y axis) change for different values of anomalous-coupling (X axis).
>
> Currently, I have to change anomalous coupling value in param_card to to get *a single cross-section*.
> What I need is a continuous cross-section value for continuous value of anomalous coupling (i.e. 0 to 5); Preferably the resulting graphic.
>
> There should be a way to automate this process. How can I do it?
>
> PS: I know some programming and scripting.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Mamutjan (mamutjan) said : 		#3

Thanks Olivier Mattelaer, that solved my question.