Adding 2HDM to a SM process

Also, I'm using MG5 version 2.2.2.

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

The process need to be in only one model.
When you do import model
all the process define before are removed.

Cheers,

Olivier

So would it be possible to run it as one process? Not sure how. Any help would be greatly appreciated .

Thanks.

Shanmuka

Hi,

They are multiple way.

The best way is to use a model from FeynRules which has the dim5 operator and the 2HDM. This ensure full-consistency.
Since both model are available in FR it should be trivial to have a merged version.

A second method is to do the merge in MadGraph (but here no consistency check are done)
import model 2HDM
add model hgg_plugin
generate p p > h1, h1 > w- > ta+ ta- vt vt~

Cheers,

Olivier

Hi,

1).
So I tried the second suggestion. When merging models 2HDM and hgg_plugin, there will be two "h1". Madgraph renames the one associated with hgg_plugin as "h1__1". This allows the generation of p p > h1__1.

But, this "h1__1" is not coupled to the 2HDM particles. Hence, I can't simply try

import model 2HDM
add model hgg_plugin
generate p p > h1__1, h1__1 > w- > ta+ ta- vt vt~

I get the following response:

Command "generate p p > h1__1, h1__1 > w- > ta+ ta- vt vt~" interrupted with error:
InvalidCmd : No amplitudes generated from process Process: h1__1 > w-> ta+ ta- vt vt~ HIG=1 HIW=1 WEIGHTED=6. Please enter a valid process.

Please not that using "h1" instead of "h1__1" works but doesn't include the possibility g g > h1.

So in short I need a way to supplant the "h1" in 2HDM with "h1__1".

2).

I would like to try FeynRules. Do you know which packages to use for my process

p p > h1__1, h1__1 > w- > ta+ ta- vt vt~,

where 2HDM and g g >h1 are included?

Your time and consideration are very much appreciated.

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Please see question above.
 Shanmuka Shivashankara
   -

    On Tuesday, February 23, 2016 3:23 AM, Launchpad Janitor <email address hidden> wrote:

 Your question #280032 on MadGraph5_aMC@NLO changed:
https://answers.launchpad.net/mg5amcnlo/+question/280032

    Status: Open => Expired

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Hi,

Feynrules is indeed what you need.
You have to create a valid UFO model from FeynRules and then you should be able to generate any processes for that model.

Cheers,

Olivier

Okay. Thanks