Composite Particle Model Approach to the Nonleptonic Hyperon Decays
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概要
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The inner structure of baryons is investigated through the nonleptonic decay of hyperons. It is assumed that the octet baryon is composed of three fundamental particles, say t's, in a bound state described by a nonrelativistic wave function, and that the weak interaction takes place through two types of elementary process t→t and t→t+π. First it is shown that the relations known as the |ΔI|=1/2 rule can be satisfied automatically within the framework of the present theory supplemented by the SU(3) symmetry. In particular, the parity violating amplitude is completely determined. which satisfies various relations such as the Sugawara-Lee relation and so on. Furthermore the broken SU(6) symmetry of the baryon structure is estimated from comparison of the parity conserving amplitude with the experiment P(Σ^-_)≃0, P(Σ^-_) being the P-wave amplitude of the process Σ^-→n+π^-. It is to be noted that the configuration determined there includes the 56-dimensional representation as its most dominant part consistent with the broken SU(6) symmetry obtained from the baryon leptonic decay discussed in a previous paper.
- 理論物理学刊行会の論文
- 1967-06-25
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