Updated baryon light-cone distribution amplitude moments are presented using two-loop conversion factors and new low-energy constants; the two-loop anomalous dimensions for one-derivative three-quark operators are computed for the first time.
Renormalization of three-quark operators at two loops in the RI${}'$/SMOM scheme
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abstract
We consider the renormalization of the three-quark operators without derivatives at next-to-next-to-leading order in QCD perturbation theory at the symmetric subtraction point. This allows us to obtain conversion factors between the $\bar{\rm MS}$ scheme and the regularization invariant symmetric MOM (RI/SMOM, RI${}'$/SMOM) schemes. The results are presented both analytically in $R_\xi$ gauge in terms of a set of master integrals and numerically in Landau gauge. They can be used to reduce the errors in determinations of baryonic distribution amplitudes in lattice QCD simulations.
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Updated determination of light-cone distribution amplitudes of octet baryons in lattice QCD
Updated baryon light-cone distribution amplitude moments are presented using two-loop conversion factors and new low-energy constants; the two-loop anomalous dimensions for one-derivative three-quark operators are computed for the first time.