2HDM type 1

Hi,

This is actually indicated in the paper.
We used the benchmark introduced in some other paper:
B. Hespel, F. Maltoni, and E. Vryonidou, Higgs and Z boson associated production via gluon
fusion in the SM and the 2HDM, 1503.01656.
and asked to the authors (in this case B. Hespel) to provide us the param_card corresponding to their benchmark point.

Cheers,

Olivier

> On 10 Feb 2022, at 13:10, Sarah <email address hidden> wrote:
>
> New question #700575 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/700575
>
> Hello
> I have a question about this paper http://arxiv.org/abs/1507.00020.
> in this paper 3 points were studded in different types of 2HDM. How did you specify the type for each point where you imported 2HDM_NLO?
>
> I hope you understand what I mean
>
>
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

let me clarify what I meant

you studied each benchmark point in a specific type of 2HDM.

when you generated a process you change only the parameters card ( edit the masses of Higgs Bosons corresponding to the benchmark points)

did you study all these points with different types in this model ( 2HDM_NLO)?

I asked you this question because I know, studying a process in 2HDM type 2 for example, the model 2HDMtII_NLO should be imported.

We only use one model and three param_card as far as I remember.
You might found more details on this paper:
https://arxiv.org/pdf/1503.01656.pdf <https://arxiv.org/pdf/1503.01656.pdf>
section 3.1

Cheers,

Olivier

PS:
> I asked you this question because I know, studying a process in 2HDM
> type 2 for example, the model 2HDMtII_NLO should be imported.

Should is certainly too strong.
Different author are creating different model with different convention/free parameter/convention
and you can use the one that you prefer as long as it fits your need obviously.

> On 10 Feb 2022, at 13:41, Sarah <email address hidden> wrote:
>
> Question #700575 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/700575
>
> Sarah posted a new comment:
> let me clarify what I meant
>
> you studied each benchmark point in a specific type of 2HDM.
>
> when you generated a process you change only the parameters card ( edit
> the masses of Higgs Bosons corresponding to the benchmark points)
>
> did you study all these points with different types in this model (
> 2HDM_NLO)?
>
> I asked you this question because I know, studying a process in 2HDM
> type 2 for example, the model 2HDMtII_NLO should be imported.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Thank you Olivier,
Your answe helps me.

I have another question, if you don't minde?

If I import 2HDM_NLO to calculate the cross section of a process in type I, what things do I have to do to tell the model to do the process in type I?

Hi,

As I said before, I'm not an expert in 2HDM and I would not pretend to know the details of the difference between the type I and II.
I would say (maybe wrongly) that the difference is simply which particle is heavier than another.
In that case, by modifying the param_card.dat you should be able to pass from type I to type II (or III)

Cheers,

Olivier

Thank you Olivier