Recommended model for exotic higgs decays

Hi Alexis,

Since I have no clue what is the content of "NMSSMHET" model, I will not be able to comment.
Maybe you can ask our SUSY expert (Benjamin Fuks), he might be able to help you.

Cheers,

Olivier

> On 6 Jul 2020, at 12:55, Alexis Kalogeropoulos <email address hidden> wrote:
>
> New question #691711 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/691711
>
> Hello
>
> We would like to remake some very old gridpacks, which at the time used the NMSSMHET model ; a relevenant discussion for the used model is this thread https://answers.launchpad.net/mg5amcnlo/+question/675999
>
> However, given that this is an old model (it is very difficult to find the original author, it looks to be like >6years old), my first question would be, what model would you recommend to be used in order to create pp - > h01 for exotic higgs decays. The idea is to have a central gridpack produced, and then depending on the desired a01 mass, different pythia fragments for the h01 decays will be used. So any advice would be much appreciated.
>
> Regards,
> Alexis
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

I am unaware of that model, so that I am afraid I won't be able to help. Sorry.

Cheers,

Benj

Hi Benj

Ok, I think we all agree that this model is out of the question ;) So then, what the recommended model would be
for pp > h01->a01 decays ? plan NMSSM ?

Thanks

Hi Benj

Ok, I think we all agree that this model is out of the question ;) So then, what the recommended model would be
for pp > h01->a01 decays ? plain NMSSM ?

Thanks

The EFT gg-higgs couplings are not part of the available NMSSM implementation, and probably need to be added by hand. I remember I had done it in the past, but can't find that anymore. That's too long ago, sorry.

Cheers,

Benj

You can always do

import model NMSSM
add model hgg_plugin

such that it add the hgg vertex following the heft model

Cheers,

Olivier

> On 10 Jul 2020, at 09:41, Benjamin Fuks <email address hidden> wrote:
>
> Question #691711 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/691711
>
> Status: Open => Answered
>
> Benjamin Fuks proposed the following answer:
> The EFT gg-higgs couplings are not part of the available NMSSM
> implementation, and probably need to be added by hand. I remember I had
> done it in the past, but can't find that anymore. That's too long ago,
> sorry.
>
> Cheers,
>
> Benj
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hello Olivier

So, I ve tried your commands and the card looks like

import model NMSSM_UFO
add model hgg_plugin
define p = g u c d s u~ c~ d~ s~ b b~
define j = g u c d s u~ c~ d~ s~ b b~
generate p p > h01
add process p p > h01 j
output ggh01_M125_Toa01a01

But I do get the error at some point

write debug file MG5_debug
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
MadGraph5Error : Unable to evaluate mdl_MW__1 = cmath.sqrt(mdl_MZ__exp__2/2. + cmath.sqrt(mdl_MZ__exp__4/4. - (mdl_aEW*cmath.pi*mdl_MZ__exp__2)/(mdl_Gf*mdl_sqrt__2))): raise error: name 'mdl_aEW' is not defined

Any ideas ?

Thanks

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

Looks like the plugin assumes that aEW is defined in the original model which is not your case.
If you add such definition in your model (aEW = 1 / aEWM1) then it should work.

Cheers,

Olivier

> On 14 Jul 2020, at 12:01, Alexis Kalogeropoulos <email address hidden> wrote:
>
> Question #691711 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/691711
>
> Status: Answered => Open
>
> Alexis Kalogeropoulos is still having a problem:
> Hello Olivier
>
> So, I ve tried your commands and the card looks like
>
> import model NMSSM_UFO
> add model hgg_plugin
> define p = g u c d s u~ c~ d~ s~ b b~
> define j = g u c d s u~ c~ d~ s~ b b~
> generate p p > h01
> add process p p > h01 j
> output ggh01_M125_Toa01a01
>
>
> But I do get the error at some point
>
> write debug file MG5_debug
> If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
> MadGraph5Error : Unable to evaluate mdl_MW__1 = cmath.sqrt(mdl_MZ__exp__2/2. + cmath.sqrt(mdl_MZ__exp__4/4. - (mdl_aEW*cmath.pi*mdl_MZ__exp__2)/(mdl_Gf*mdl_sqrt__2))): raise error: name 'mdl_aEW' is not defined
>
> Any ideas ?
>
> Thanks
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.