Generating VBF samples using BSMC model

Asked by Jiawei Wang on 2018-09-03

Dear Madgraph experts,

I am trying to generate some VBF samples (with Higgs decaying into 4 leptons) using the BSMC model. Here are my commands for the generation:

import model BSMC_full
generate p p > h j j $$ w+ w- z / a, h > l+ l- l+ l-

These commands work fine when I use the Higgs Characterization model. However for BSMC, it gives some processes I don't want. In the SubProcesses folder, I can see 5 processes: P1_gg_hgg_h_llll, P1_gg_hqq_h_llll, P1_gq_hgq_h_llll, P1_qq_hgg_h_llll and P1_qq_hqq_h_llll. And even in the P1_qq_hqq_h_llll process, I can see some diagrams like: d d~ > g > h g > h j j.

Is there a way to generate VBF samples using BSMC model without these unwanted diagrams?

Thanks,
Jiawei

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
No assignee Edit question
Solved by:
Jiawei Wang
Solved:
2018-09-03
Last query:
2018-09-03
Last reply:
2018-09-03

Hi,

We do not have any model BSMC_full
in the database of model that we are aware.

is it BSMC-full?

That model include the following vertex:

Interactions 321 : g g h has the following property:
{
    'id': 321,
    'particles': [21,21,25],
    'color': [2 Tr(0,1)],
    'lorentz': ['VVS6'],
    'couplings': {(0, 0): 'GC_462'},
    'orders': {'QED': 1, 'QCD': 2},
    'loop_particles': None,
    'type': 'base',
    'perturbation_type': None
}

Since it does not have his specific coupling order, it does not sounds possible to remove such type of interaction. Consequently it seems to me that you need another model. (Maybe the same one where you remove such type of interaction and/or assign to them an additional coupling order to allow such removal on request.

You can either do that yourself or maybe contact the author of that model.

Cheers,

Olivier

> On 3 Sep 2018, at 11:23, Jiawei Wang <email address hidden> wrote:
>
> New question #673295 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/673295
>
> Dear Madgraph experts,
>
> I am trying to generate some VBF samples (with Higgs decaying into 4 leptons) using the BSMC model. Here are my commands for the generation:
>
> import model BSMC_full
> generate p p > h j j $$ w+ w- z / a, h > l+ l- l+ l-
>
> These commands work fine when I use the Higgs Characterization model. However for BSMC, it gives some processes I don't want. In the SubProcesses folder, I can see 5 processes: P1_gg_hgg_h_llll, P1_gg_hqq_h_llll, P1_gq_hgq_h_llll, P1_qq_hgg_h_llll and P1_qq_hqq_h_llll. And even in the P1_qq_hqq_h_llll process, I can see some diagrams like: d d~ > g > h g > h j j.
>
> Is there a way to generate VBF samples using BSMC model without these unwanted diagrams?
>
> Thanks,
> Jiawei
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Jiawei Wang (jwwang93) said : #2

Thanks. I will try to contact the authors.