2010

Two-loop matching factors for light quark masses and three-loop mass anomalous dimensions in the RI/SMOM schemes

Almeida, Leandro G., Sturm, Christian

Understand

Light quark masses can be determined through lattice simulations in regularization invariant momentum-subtraction(RI/MOM) schemes.

  • Subsequently, matching factors, computed in continuum perturbation theory, are used in order to convert these quark masses from a RI/MOM scheme to the MS-bar scheme.
  • We calculate the two-loop corrections in quantum chromodynamics(QCD) to these matching factors as well as the three-loop mass anomalous dimensions for the RI/SMOM and RI/SMOM_gamma_mu schemes.
  • These two schemes are characterized by a symmetric subtraction point.

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