Nonleptonic Decays of Hyperons and Current Algebra
- 25 July 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 171 (5), 1543-1549
- https://doi.org/10.1103/physrev.171.1543
Abstract
Nonleptonic decays of baryons are studied within the framework of current algebra, current-current interaction, and hard pions. A formalism which avoids the usual ambiguity of off-mass-shell extrapolation for the -wave decays is developed, from which formulas for the decay amplitudes can be derived. Two models are discussed. The first model contains the equal-time commutator and the baryon pole terms, but allows for the symmetry breaking through the presence of the parity-violating spurion matrix elements between baryons. The second model adds the decuplet and contributions to the first model, but the symmetry-breaking matrix elements are not considered. Reasonable agreement with experiment is obtained in both models.
Keywords
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