1212.1855 (X. -L. Ren et al.)

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

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.

View original: http://arxiv.org/abs/1212.1855