Updated determination of light-cone distribution amplitudes of octet baryons in lattice QCD

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Abstract
We present updated results for the wave function normalization constants and the first moments of the light-cone distribution amplitudes for the lowest-lying baryon octet. The analysis is carried out on a large number of n f = 2 + 1 lattice gauge ensembles, including ensembles at physical pion (and kaon) masses. These are spread across five different lattice spacings, enabling a controlled continuum limit. The main differences with respect to our earlier work [G. S. Bali (RQCD Collaboration), Light-cone distribution amplitudes of octet baryons from lattice QCD, .] are the use of two-loop conversion factors to an MS ¯ -like scheme and of an updated set of low-energy constants in the parametrization of the quark mass dependence. As a byproduct, for the first time, the anomalous dimensions for local leading-twist three-quark operators with one derivative are obtained.
Funding Information
  • Deutsche Forschungsgemeinschaft (40824754, 460248186)
  • Horizon 2020 Framework Programme
  • H2020 Marie Skłodowska-Curie Actions (813942, 824093)
  • Jülich Supercomputing Centre, Forschungszentrum Jülich
  • Gauss Centre for Supercomputing
  • Universität Stuttgart
  • Forschungszentrum Jülich
  • Bayerische Akademie der Wissenschaften
  • Bundesministerium für Forschung, Technologie und Raumfahrt
  • Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg
  • Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst
  • Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen
  • John von Neumann Institute for Computing

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