Light-cone distribution amplitudes of the baryon octet

TL;DR

This paper reports the first ab initio lattice QCD calculation of the distribution amplitudes of the baryon octet, revealing significant SU(3) flavor symmetry violations and providing key normalization constants and moments.

Contribution

It introduces the first lattice QCD results for the full baryon octet's distribution amplitudes, including normalization constants and moments, with analysis of flavor symmetry violations.

Findings

First lattice QCD results for baryon octet distribution amplitudes.

Observation of significant SU(3) flavor symmetry breaking effects.

Evaluation of P-wave (higher twist) normalization constants.

Abstract

We present results of the first ab initio lattice QCD calculation of the normalization constants and first moments of the leading twist distribution amplitudes of the full baryon octet, corresponding to the small transverse distance limit of the associated S-wave light-cone wave functions. The P-wave (higher twist) normalization constants are evaluated as well. The calculation is done using $N_f=2+1$ flavors of dynamical (clover) fermions on lattices of different volumes and pion masses down to 222 MeV. Significant SU(3) flavor symmetry violation effects in the shape of the distribution amplitudes are observed.