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Analysis of. delta. S=1 nonleptonic weak decays and the. delta. I=1/2 rule

Journal Article · · Phys. Rev., D; (United States)
Current-algebra and quark-model methods are used to investigate hyperon and kaon transition amplitudes for various contributions to the weak nonleptonic Hamiltonian of the Weinberg-Salam model. Substantial enhancements are found for matrix elements of certain operators which are induced by quantum-chromodynamic radiative corrections and contain right-handed currents. These operators improve the agreement with experiment in most cases, although problems remain in P-wave hyperon amplitudes. In this approach, the ..delta..I=1/2 rule is understandable in both kaons and baryons under plausible assumptions.
Research Organization:
Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
OSTI ID:
5634756
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:1; ISSN PRVDA
Country of Publication:
United States
Language:
English