MadGraph5_aMC@NLO

More flexible pdf uncertainties (feature request)

Asked by Josh Bendavid

Hi,
I have what is probably a feature request for computing pdf variation weights.

At the moment it seems I can only specify a single range of lhapdf id's, through the PDF_set_min/max in the run card.

I would like to be able to specify a possibly disjoint list

eg. 10801-10852,10900,21000

Use case would to be include weights corresponding to the central value (and possibly also the uncertainty) for alternative pdf sets in addition to just the eigenvectors of the central value.

Thanks,
Josh

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Rikkert Frederix Edit question
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Last reply:
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Rikkert Frederix (frederix) said : 		#1

Hi Josh,

This is not easily possible in the way the code is set-up now. At some point we might implement this, but not anytime very soon. For the moment, you'll have to generate a separate event sample for each set.

Best regards,
Rikkert

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