NLO EW corrections

Asked by mekaoui yahya on 2017-09-12

Dear experts,

I'm new with MG5, and I want to generate some samples corresponding to the process
  e- e+ > h1 a [QED] for my analysis in the model 2HDM_NLO (we get this model from
 FeynRules website) .

but, I found this :

Command "generate e- e+ > h1 a [QED]" interrupted with error:
InvalidCmd : MG5aMC can only handle QCD at NLO accuracy.
  We can however compute loop with [virt=QED].
  We can also compute cross-section for loop-induced processes with [noborn=QED]

please, this problem get from the model ? we would need a model with NLO EW only corrections ?
if no, how can we calculate NLO EW only corrections ?

Thanks in advance!

Best,
Yahya

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
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Last query:
2017-09-12
Last reply:
2017-09-13

Hi,

1) This is a current limitation of the code. We are not able to handle ElectroWeak correction
2) The model is indeed not compatible with EW loop computation
3) When we will allow ElectroWeak correction, your process definition will not be supported for such type of correction since you need
To have both photon and electron in the initial state (with the associated PDF)

Cheers,

Olivier
> On 12 Sep 2017, at 20:53, mekaoui yahya <email address hidden> wrote:
>
> Question #657923 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/657923
>
> Summary changed to:
> NLO EW corrections
>
> Description changed to:
> Dear experts,
>
> I'm new with MG5, and I want to generate some samples corresponding to the process
> e- e+ > h1 a [QED] for my analysis in the model 2HDM_NLO (we get this model from
> FeynRules website) .
>
> but, I found this :
>
> Command "generate e- e+ > h1 a [QED]" interrupted with error:
> InvalidCmd : MG5aMC can only handle QCD at NLO accuracy.
> We can however compute loop with [virt=QED].
> We can also compute cross-section for loop-induced processes with [noborn=QED]
>
> please, this problem get from the model ? we would need a model with NLO EW only corrections ?
> if no, how can we calculate NLO EW only corrections ?
>
> Thanks in advance!
>
> Best,
> Yahya
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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