1999/06/15 by Makoto Oka, Oka, Makoto
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9906041
7 pages, Talk presented at International Symposium in Nuclear Electro-Weak Spectroscopy (NEWS99) for Symmetries and Electro-Weak Nuclear Processes, Osaka, March 1999
arxiv created 1999/06/15 · openalex publication_date 1999/06/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The weak decays of hyperons and hypernuclei are studied from the chiral symmetry viewpoint. The soft pion relations are useful in understanding the isospin properties of the weak hyperon decays. Recent development on the short-range part of the \Lam N→ NN weak transitions shows fairly good account of the weak decays of hypernuclei, though it fails to explain the n/p ratio. The \pip decays of light hypernuclei are studied in the soft pion approach. They are related to the \DI=3/2 amplitudes of the nonmesonic decay.