Chiral Dynamics of Octet Baryons and Nonleptonic Decays of Hyperons
- 25 June 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 170 (5), 1359-1364
- https://doi.org/10.1103/physrev.170.1359
Abstract
Chiral dynamics of the octet baryons is discussed, and a phenomenological chiral-invariant Lagrangian is derived. It is noted that in a chiral-invariant Lagrangian for the octet baryons, the structure of the axial-vector currents and the pattern of baryon-meson couplings are uniquely characterized by two free parameters, corresponding to and the ratio of the axial-vector currents. Nonleptonic hyperon decays are discussed from the chiral-dynamics point of view. A discussion is given on the transformation properties of the nonleptonic weak interactions under chiral transformations. Conditions under which the usual current-algebra analyses are valid are elaborated.
Keywords
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