arXiv:1212.1855·v1·Nuclear Theory

Quark mass dependence of the ground-state octet baryons in next-to-next-to-next-to-leading order covariant baryon chiral perturbation theory

X.-L. Ren🇨🇳 · L. S. Geng🇨🇳 · J. Martin Camalich🇬🇧 · J. Meng🇿🇦 · H. Toki🇯🇵

We report on a recent study of the ground-state octet baryon masses using the covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme up to next-to-next-to-next-to-leading order. By adjusting the available 19 low-energy constants, a good fit of the $n_{f} = 2 + 1$ lattice quantum chromodynamics results from the PACS-CS, LHPC, HSC, QCDSF-UKQCD and NPLQCD collaborations is achieved.

Comments: 4 pages, 1 figure, presented by Lisheng Geng at the 20th International IUPAP Conference on Few-Body Problems in Physics, 20 - 25 August, 2012, Fukuoka, Japan

Quark mass dependence of the ground-state octet baryons in next-to-next-to-next-to-leading order covariant baryon chiral perturbation theory

Abstract