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Split heavy quark masses #86

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alecandido opened this issue Oct 27, 2020 · 1 comment
Closed

Split heavy quark masses #86

alecandido opened this issue Oct 27, 2020 · 1 comment
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enhancement New feature or request physics physics features

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@alecandido
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At the moment the theory runcard is defining three kinds of heavy quark masses:

  • mc: the mass of the charm (e.g.)
  • Qmc: the reference scale at which mc is evaluated as a Lagrangian parameter in a renormalization scheme (say MSbar)
  • kcthr: so the actual new mass is given by kcthr * mc, and it is the threshold used by any VFNS for charm

For yadism they all coincide currently, because:

  • mass schemes other than POLE are not implemented (so Qmc is irrelevant)
  • kcthr is always considered one

Let's fix at least the second, and we will deal with the first as soon as HQMS will be implemented.
@alecandido alecandido added enhancement New feature or request physics physics features labels Oct 27, 2020
@felixhekhorn
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part one is done in NNPDF/eko#62, the difference between pole mass and MSbar mass is discussed in #84

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@felixhekhorn @alecandido