Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory
arXiv:0905.0857 · doi:10.1103/PhysRevD.80.077501
Abstract
We use two-flavor heavy baryon chiral perturbation theory to investigate the isovector axial charges of the spin one-half hyperons. Expressions for these hyperon axial charges are derived at next-to-leading order in the chiral expansion. We utilize phenomenological and lattice QCD inputs to assess the convergence of the two-flavor theory, which appears to be best for cascades.
4 pages, 1 figures, published version
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