Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory

Details Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory

2009-05-06

arxiv.org/abs/0905.0857v3

Phys.Rev.D80:077501,2009

Physics

Nuclear Physics

Nuclear Theory

4 pages, 1 figures, published version

Scientific paper

10.1103/PhysRevD.80.077501

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.

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