2009

Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory

Jiang, Fu-Jiun, Tiburzi, Brian C.

Understand

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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