Loop induced process

Dear Sebastian,

You need a special model for QED loop: loop_qcd_qed_sm
(or any of the variant of that model).

Note that for h > a a. It is more efficient to use the Effective Field Theory approach:
by doing the following
import model heft
generate h > a a

Cheers,

Olivier

On 18 Aug 2015, at 12:21, sgurruti <email address hidden> wrote:

> New question #270495 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/270495
>
> I am trying to generate the following process: h > a a:
>
> I received this message:
> MG5_aMC>import model loop_sm-full
> INFO: Change particles name to pass to MG5 convention
> Kept definitions of multiparticles l- / j / vl / l+ / p / vl~ unchanged
> Defined multiparticle all = g gh gh~ d u s d~ u~ s~ a ve vm vt ve~ vm~ vt~ c b t c~ b~ t~ z w+ h w- e- mu- ta- e+ mu+ ta+
> MG5_aMC>generate h > a a [QED]
> Command "generate h > a a [QED]" interrupted with error:
> InvalidCmd : Perturbation order QED is not among the perturbation orders allowed for by the loop model.
>
> What I am doing wrong?
>
> Thanks,
> Sebastian
>
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