MadGraph5_aMC@NLO

Change PDF to NNPDF3.1

Asked by Antonio Sandroni

Hi, i need to use the PDF set NNPDF3.1 in particular NNPDF31_nlo_as_0118_luxqed; how do I choose it?
I found the set whic it belongs here https://zenodo.org/record/1119583#.Y0GdltJBwWQ but how do i upload it in MadGraph?
Thanks

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Olivier Mattelaer
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Best Olivier Mattelaer (olivier-mattelaer) said : 		#1

In the run_card, you can set the following two parameter
"pdlabel" to the value "lhapdf"
and the parameter lhaid to the number associated to your PDF.

MG5aMC will upload it for you

Cheers,

Olivier

> On 8 Oct 2022, at 18:30, Antonio Sandroni <email address hidden> wrote:
>
> Question #703426 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/703426
>
> Description changed to:
> Hi, i need to use the PDF set NNPDF3.1 in particular NNPDF31_nlo_as_0118_luxqed; how do I choose it?
> I found the set whic it belongs here https://zenodo.org/record/1119583#.Y0GdltJBwWQ but how do i upload it in MadGraph?
> Thanks
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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Antonio Sandroni (antoniosandroni) said : 		#2

Thank you! I found the number associated to the PDF because i downloaded the previous file with a bash script in the HEPToolsInstaller folder and after this in the file HEPTools/lhapdf6_py3/share/LHAPDF/pdfsets.index have been added the names of the new pdfs with their code; is there a way to know the associated code number of a pdf in another way?

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Antonio Sandroni (antoniosandroni) said : 		#3

Thanks Olivier Mattelaer, that solved my question.

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Olivier Mattelaer (olivier-mattelaer) said : 		#4

I typically use this ressource: https://lhapdf.hepforge.org/pdfsets.html

Cheers,

Olivier

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Antonio Sandroni (antoniosandroni) said : 		#5

Fantastic!