Intact protons in the LHE output

Asked by Michael Pitt on 2019-11-19

Dear authors

I'm interested in exclusive ttbar production via an exchange of two elastic photons, and I execute the following code:
generate a a > t t~
launch
set lpp1 2
set lpp2 2

In the LHE output file, I read 4 particles: 2 photons and 2 tops. I would like to have also the protons ( as they are part of the final state particles, and they can be used as an input to other simulation programs)

Is there an easy way to keep the intact protons in the LHE output record?

thank you in advance,
Michael

Question information

Language:
English Edit question
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Answered
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MadGraph5_aMC@NLO Edit question
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Last query:
2019-11-19
Last reply:
2019-11-20

Hi Michael,

We do not have any easy option for that and this is not standard so one to target the other simulation program in order to be sure that such information is properly handle in that case.

However, you have the full information inside the lhe file.
So the easiest is to modify that file and customise it in the way that fit your need.

Cheers,

Olivier

> On 19 Nov 2019, at 17:33, Michael Pitt <email address hidden> wrote:
>
> New question #686016 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/686016
>
> Dear authors
>
> I'm interested in exclusive ttbar production via an exchange of two elastic photons, and I execute the following code:
> generate a a > t t~
> launch
> set lpp1 2
> set lpp2 2
>
>
> In the LHE output file, I read 4 particles: 2 photons and 2 tops. I would like to have also the protons ( as they are part of the final state particles, and they can be used as an input to other simulation programs)
>
> Is there an easy way to keep the intact protons in the LHE output record?
>
> thank you in advance,
> Michael
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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