MadGraph5_aMC@NLO

Lesser events generated for W+photon processes

Asked by Saumyen Kundu

Hi MG5 experts,

I was trying to generate processes W+photon, WW+photon, ZW+photon and others as monophoton backgrounds. But I found that the processes with W and photon (up to two additional partons) could not generate all the processes asked for. The processes like Z+photon, ZZ+photon etc was generated fine. Do you think the generation level cuts are the reason? I used mostly the default cuts. The batch files for the 3 processes and also a MG5 script for W+photon can be found in the following link:
https://www.dropbox.com/sh/ue9tcnhmpkcda22/AACwebpsWkFzkvra0T9aSCAOa?dl=0

Will appreciate any help.

Thank and regards,
Saumyen

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
No assignee Edit question
Solved by:
Saumyen Kundu
Solved:
Last query:
Last reply:
Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

Did you try the standard trick in such cases?
change sde_strategy (in this case to 1) and set hard_survey to hiigher number...

Cheers,

Olivier

> On 27 Sep 2023, at 20:35, Saumyen Kundu <email address hidden> wrote:
>
> New question #708061 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/708061
>
> Hi MG5 experts,
>
> I was trying to generate processes W+photon, WW+photon, ZW+photon and others as monophoton backgrounds. But I found that the processes with W and photon (up to two additional partons) could not generate all the processes asked for. The processes like Z+photon, ZZ+photon etc was generated fine. Do you think the generation level cuts are the reason? I used mostly the default cuts. The batch files for the 3 processes and also a MG5 script for W+photon can be found in the following link:
> https://www.dropbox.com/sh/ue9tcnhmpkcda22/AACwebpsWkFzkvra0T9aSCAOa?dl=0
>
> Will appreciate any help.
>
> Thank and regards,
> Saumyen
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Saumyen Kundu (saumyen.k) said : 		#2

Thank you so much, Olivier. It worked very well.
I felt the 'sde_strategy=2' option was making things complicated in my case.

Thanks and regards,
Saumyen1