Chiral extrapolation of baryon mass ratios
arXiv:1209.0980 · doi:10.1103/PhysRevD.87.054021
Abstract
We analyze lattice data for octet baryon masses from the QCDSF collaboration employing manifestly covariant Baryon Chiral Perturbation Theory. It is shown that certain combinations of low-energy constants can be fixed more accurately than before from this data. We also examine the impact of this analysis on the pion-nucleon sigma term, and on the convergence properties of baryon mass expansions in the SU(3) symmetry limit.
Updated version, to be published in Phys. Rev. D
References in corpus (11)
- Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
- Chiral dynamics of the S11(1535) and S11(1650) resonances revisited
- Nucleon mass and sigma term from lattice QCD with two light fermion flavors
- Chiral extrapolations of baryon masses for unquenched three-flavor lattice simulations
- The lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
- SU(2) and SU(3) chiral perturbation theory analyses on baryon masses in 2+1 flavor lattice QCD
- First Calculation of Hyperon Axial Couplings from Lattice QCD
- Aspects of meson-baryon scattering in three- and two-flavor chiral perturbation theory
- Hyperons in Two Flavor Chiral Perturbation Theory
- Baryon masses, chiral extrapolations, and all that
- Probing the convergence of perturbative series in baryon chiral perturbation theory