Write the right nf in the LHAPDF .info file.

[scarlehoff]

Currently the NumFlavors written by eko in the info file correspond to the number of possible partons, while this field is actually the maximum nf used for the evolution of alpha_s.

Ref: https://lhapdf.hepforge.org/config.html

[andreab1997]

Ok for me but what about the Flavors list? It should be consistent with NumFlavors right?

[felixhekhorn]

Currently the NumFlavors written by eko in the info file correspond to the number of possible partons, while this field is actually the maximum nf used for the evolution of alpha_s.

Ref: https://lhapdf.hepforge.org/config.html

not quite - quoting said HTML page

Maximum/fixed number of flavors used in the fit.

so this refers to the PDFs in the first place - so it should be theory_card.heavy.num_flavs_max_pdf (of course 14 was just wrong)

alpha_s evolution will use this value if AlphaS_NumFlavors is not explicitly set.

this is only a fallback

PS: @alecandido I know you want to give up on that specific variable (did we do it already?), so we would need to provide an alternative

[felixhekhorn]

Ok for me but what about the Flavors list? It should be consistent with NumFlavors right?

No - again quoting from the officals:

List of supported (user-visible) parton flavors, using the PDG Monte Carlo numbering scheme (quarks from 1 .. 6, antiquarks from -6 .. -1, and gluon = 21, as well as any "optional extras" such as photon = 22).

so you can stuff what ever there (also BSM) - NumFlavors refers to DGLAP

[scarlehoff]

so this refers to the PDFs in the first place

Oh, I missed the . I understood "on the fit evolution" as one object.

In any case, it is not 14 :P

Ok for me but what about the Flavors list? It should be consistent with NumFlavors right?

Not really since we are just filling with 0s the numbers we don't care about in Flavors.