Why not having a option of different beam types (i.e.2=photon from proton )in run_card.dat at NLO QCD ?

Asked by DavidHydroneWang on 2018-11-28

Dear Olivier,

I find I can only have one option ,1=proton,in the run_card.dat at NLO QCD . Why not having a option of different beam types (i.e.2=photon from proton )in run_card.dat at NLO QCD ?

I 'm looking forward to your reply

Thanks!

Question information

Language:
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Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
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Solved by:
Olivier Mattelaer
Solved:
2018-12-04
Last query:
2018-12-04
Last reply:
2018-11-28

Hi,

For NLO in QCD this should not be a huge problem, while for NLO in EW this is quite problematic.
Even for NLO in QCD, this is actually not trivial since you need to modify the way the phase-space generator is working for those specific case ( and I'm already not convinced by the LO implementation of such beam-type)

So in short, this can be implemented in the future and the main reason why not is man power (and interest)

Cheers,

Olivier

> On 28 Nov 2018, at 03:46, DavidHydroneWang <email address hidden> wrote:
>
> New question #676404 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/676404
>
> Dear Olivier,
>
> I find I can only have one option ,1=proton,in the run_card.dat at NLO QCD . Why not having a option of different beam types (i.e.2=photon from proton )in run_card.dat at NLO QCD ?
>
> I 'm looking forward to your reply
>
> Thanks!
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

DavidHydroneWang (davidh.wang) said : #2

Thanks Olivier Mattelaer, that solved my question.