Baryon Decays and Unitary Symmetry
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概要
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Non-leptonic and leptonic decays of the baryons are quantitatively discussed on the basis of the current-current picture by introducing the axial vector current belonging to the 27-dimensional representation of SU(3) instead of the F-type one used in Cabibbo's theory. It is shown that the decay Σ^+→nπ^+ proceeds through a pure P wave and that the P wave is larger than the S wave for the decay Σ^+→pπ^0. The interaction types of the decays Λ→p+l^-+ν^^- and Ξ^-→Λ+l^-+ν^^- are predicted to be V-1.1A and v+1.1A, respectively. Another interesting result is the predominance of the 27-dimensional representation part for the axial vector current. It is concluded that Cabibbo's currents are not the only ones possible to explain the semi-leptonic processes.
- 理論物理学刊行会の論文
- 1966-03-25
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