MadGraph5_aMC@NLO

loop-induced higgs-to-diphoton

Asked by Lee, Dongsub

Dear MadGraph5 aMC@NLO team,

Hi.

Recently I'm trying to generate Higgs to diphoton process with fully loop-induced matrix element with Higgs produced via gluon-fusion[g g > h > a a].

I found that using MadSpin is one way for this generation from below link,
               > https://answers.launchpad.net/mg5amcnlo/+question/674034
but, obviously there would be on-shell Higgs only.

However, I want to see off-shell contribution, too.
So I would like to ask, is there any way to generate [g g > h > a a] process with both off-shell Higgs and loop-dynamics?

Always thank you for great contribution to the community.

Sincerely,
Lee, D.

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

NO this is a two loop computation and we can not handle it.

Cheers,

Olivier

> On 25 Aug 2020, at 03:01, Lee, Dongsub <email address hidden> wrote:
>
> New question #692580 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/692580
>
> Dear MadGraph5 aMC@NLO team,
>
> Hi.
>
> Recently I'm trying to generate Higgs to diphoton process with fully loop-induced matrix element with Higgs produced via gluon-fusion[g g > h > a a].
>
> I found that using MadSpin is one way for this generation from below link,
>> https://answers.launchpad.net/mg5amcnlo/+question/674034
> but, obviously there would be on-shell Higgs only.
>
> However, I want to see off-shell contribution, too.
> So I would like to ask, is there any way to generate [g g > h > a a] process with both off-shell Higgs and loop-dynamics?
>
> Always thank you for great contribution to the community.
>
> Sincerely,
> Lee, D.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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