Characterization of (Y, Z)- and (Λ,Σ)-Modes

概要

論文の詳細を見る
New assignment of isotopic spin and the concepts of K-mesonic charge and of K-mesonic charge conjugation are introduced in order to characterize (Y, Z)- and (Λ,Σ)-modes. If the selection rule |ΔI|=1/2 is assumed for weak interactions, suitable combinations of them can be expressed in terms of (Y, Z)-mode, and they are invariant under K-mesonic charge conjugation, and under the rotation in isotopic spin space, owing to the new assignment of isotopic spin. Then in decay processes neutral K-mesons appear always in (K_1^0, K_2^0)-mode. Strong interactions are naturally invariant under the rotation. Therefore the newly assigned isotopic spin can be treated as an absolutely conserved quantity in an approximation. The invariancy of strong interactions under K-mesonic charge conjugation is discussed. It is shown that characteristic features of K-mesonic charge can be united well with the model proposed in a previous article. Thus, some close correlation between the three selection rules about hyperonic charge, isotopic spin and space pariy, which characterize the strength of interactions is achieved.
理論物理学刊行会の論文
1959-06-25