Hyperons in two-flavor chiral perturbation theory

2008/08/31 by Brian C. Tiburzi, André Walker-Loud, Andre Walker-Loud · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.physletb.2008.09.054

published as Phys.Lett.B669:246-253,2008 · 14 pages, 3 figs, version published in PLB

openalex publication_date 2008/10/03 · arxiv created 2008/10/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We use two-flavor chiral perturbation theory to describe hyperons. We focus on the strangeness conserving sector, and, as an example, calculate hyperon masses. Convergence of this two-flavor chiral expansion for observables is improved over the three-flavor theory. The cost, however, is a larger number of low-energy constants that must be ultimately determined from lattice QCD data. A formula for the mass of the omega baryon is derived to sixth order in this expansion, and will aid lattice practitioners in scale setting or tuning the strange quark mass.

Citations

• Baryon masses, chiral extrapolations, and all that⋆
• Chiral corrections to hyperon axial form factors
• Chiral extrapolations of baryon masses for unquenched three-flavor lattice simulations
• Phenomenological Lagrangians

Cited by

• Chiral extrapolation of octet-baryon charge radii
• Connected parts of decuplet electromagnetic properties