Composite Model and the Nature of Vector Interactions in Strangeness-Violating Decays

スポンサーリンク

概要

• 論文の詳細を見る

• In this paper we discuss decay interations based on Sakata's composite model in which neutron, n, proton, p, and Λ-particle are supposed to be "elementary". Symmetry with respect to n, p, and Λ is also assumed. Then it is shown that (πK) currents are necessarily added to the usual strangeness violating (|ΔS|=1) baryon vector currents in the conventional Yukawa type interation. This is analogous to the situation that (ππ and (KK) currents necessarily appear in the |ΔS|=0 leptonic decay interaction in the Sakata model. By taking the (πK) currents into account, the transition probabilities for K_<e3>, K_<μ3>, and beta-and muon-decays of Λ are shown to be consistently described with the same coupling constant as that obtained from K_<μ2^+> decay. Thus the coupling constant for strangeness-violating leptonic decays seems to be smaller then that for strangeness conserving ones. For non-leptonic decays, the Hamiltonian which guarantees the |ΔI|=1/2 selection rule is easily found by virtue of the additional neutral terms with the universal coupling constant. The lifetimes and branching ratios for non-leptonic decays of Λ and K are in good agreement with experiment in terms of the normal beta-decay coupling constant. The situation is a little complicated for K_<π3>. Admixture of |ΔI|=3/2 transitions are also briefly discussed. Some comments are made on the observability of π^<0´>, a neutral meson having an isotopic spin 0.

• 理論物理学刊行会の論文
• 1960-07-25

著者

• Kawaguchi Masaaki

  Physics Department Tokyo University Of Education

• Miyamoto Yoneji

  Physics Department Tokyo University Of Education

• ISO Chikashi

  Physics Department, Tokyo University of Education

• Iso Chikashi

  Physics Department Tokyo University Of Education

• KAWAGUCHI Masaaki

  Physics Department, Tokyo University of Education

• MIYAMOTO Yoneji

  Physics Department, Tokyo University of Education

関連論文

• Approximate Solution of the Bethe-Salpeter Equation for Two Fermions
• Effects of the γ-3π Interaction on the Electromagnetic Properties of Deuteron
• On the γ-Decay of Neutral Meson.
• Composite Model and the Nature of Vector Interactions in Strangeness-Violating Decays
• Note on the Decay Interactions of Hyperons and Heavy Mesons
• Hypothesis of the Isotopic Spin Independence in Extremely High Energy Region
• A Self-Consistent Subtraction Method in the Quantum Field Theory.II_2.

スポンサーリンク