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Prog. Theor. Phys. Supplement No.109 (1992) pp. 99-113

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Chapter V. Weak Transitions of Low-Lying Baryons in the Skyrme Model

Kanji Fujii, Yoshihiko Kondo* and Sakae Saito*

Department of Physics, Hokkaido University, Sapporo 060
*Department of Physics, Nagoya University, Nagoya 464-01

Abstract:

We discuss the weak transitions of low-lying hyperons in the Skyrme model. It is shown that both the SU(3) Skyrme model and the bound kaon approach to strangeness can derive the ΔI = 1/2 dominance for matrix elements of the current × current interaction between one-hyperon states, which is qualitatively similar to the quark model, although the structure of the weak transition amplitudes in the quark model is different from that in the Skyrme model. The vector currents, which are relevant to semileptonic decays, are shown to exhibit a peculiar behavior in the bound kaon approach. In the strong SU(3)f symmetry breaking limit, however, the SU(3) Skyrme model treated in the Yabu-Ando approach turns out to show the same behaviors as those of the bound kaon approach.


URL : http://ptp.ipap.jp/link?PTPS/109/99/
DOI : 10.1143/PTPS.109.99

[ Full Text PDF : FREE ACCESS (1134K) ] Citation:

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