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Prog. Theor. Phys. Vol. 21 No. 3 (1959) pp. 441-451

Global Symmetry and Isotopic Spin Conservation in Non-Leptonic Hyperon Decays

Gyo Takeda and Masaaki Kato^*

Institute for Nuclear Study, Tokyo University, Tokyo
^*Department of Physics, Tokyo University, Tokyo

(Received November 24, 1958)

Abstract:

Possible existence of the universal V \mp A coupling and the global symmetry in the non-leptonic hyperon decays is discussed. The observed deviations from the expected symmetries in actual decays are explained as effects due to the mesonic structure of hyperons. In a close relation with the idea of the global symmetry a new isotopic spin is defined, which is 1/2 for all the baryons and integer for K. The conservation law of this isotopic spin is satisfied in the non-leptonic decays.

URL : http://ptp.ipap.jp/link?PTP/21/441/
DOI : 10.1143/PTP.21.441

[ Full Text PDF : FREE ACCESS (893K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

1. M. Gell-Mann, Phys. Rev. 106 (1957), 1296[APS].
2. J. Schwinger, Proceedings of the 7th Rochester Conference (Interscience Publishers, Inc., New York, 1957).
3. R. H. Dalitz, Proc. Roy. Soc. A 69 (1956), 527.
   Gyo Takeda, Phys. Rev. 101 (1956), 1547[APS].
   A nearly complete list of references can be found in
   M. Kawaguchi, Phys. Rev. 107 (1957), 573[APS].
4. B. d'Espagnat, J. Prentki, and A. Salam, Nucl. Phys. 5 (1958), 447[CrossRef].
5. G. Takeda, Prog. Theor. Phys. 19 (1958), 631[PTP].
6. M. Gell-Mann and A. H. Rosenfeld, Annu. Rev. Nucl. Sci. 7 (1957).
7. See, e.g. Drell's report on the nucleon structure in 1958 Annual International Conference on High Energy Physics (CERN, Geneve).
8. See, e.g., R. P. Feynman and M. Gell-Mann, Phys. Rev. 109 (1958), 193[APS].

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