On the Relative Parity of Charged and Neutral K Mesons

概要

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Standing on a view-point that the mass difference between the particles belonging to the same charge multiplet is mainly due to the oddness of the relative parity between charged and neutral K mesons, i. e. p(K)=odd, it is shown, on the basis of the perturbation calculation, that this view-point is permissible under certain conditions. One of them is the equality of the relative parities of Λ, Σ's and Ξ's. This perhaps does not suffer any change even when any higher order contribution of the perturbation expansion is taken into account. In order to obtain some information about the parities of charged and neutral K mesons, various effects due to p(K)=odd, such as the mass difference between charged and neutral K mesons, are investigated. The result thus obtained is not inconsistent with P(K^±)=odd, which may be in agreement with the result obtained from the K^±-nucleon scattering experiment; the most favorable parity assignment to K mesons is P(K^+)=odd and P(K^0)=even. Further, a comment standing on the view-point of p(K)=odd is made about the implicit assumption that the baryon spectrum known at present is closed.
理論物理学刊行会の論文
1959-11-25