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Question about running quark masses in EDM sub-module #259

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e-nvw opened this issue Oct 18, 2024 · 1 comment
Open

Question about running quark masses in EDM sub-module #259

e-nvw opened this issue Oct 18, 2024 · 1 comment
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@e-nvw
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e-nvw commented Oct 18, 2024

Dear authors,

I recently noticed that the fermion mass running function get_m (in flavio/physics/edms/common.py) appears to be calling the down quark running mass for an up quark input, and vice versa:

    def get_m(par, f, scale, eft):
        ...
        if f == 'u':
            return flavio.physics.running.running.get_md(par, scale, nf_out=nf_out)
        elif f == 'd':
            return flavio.physics.running.running.get_mu(par, scale, nf_out=nf_out)
        ...

My apologies if this is a silly question, but I'm unsure why this should be the case, especially in light of get_m's subsequent implementation in the function edm_f (where context suggests it should be providing the mass of the input fermion f). Any clarification would be much appreciated.

Thank you for your time.
Ewan Wallace

@DavidMStraub
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I think it's not a silly question but a silly bug 😉

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