Strangeness Dependence in Radiative Hyperon Decay Amplitudes

Abstract

The radiative decays of the $(3/2{)}^{+}$ baryons are studied in the three flavor generalization of the Skyrme model. The kaon fields are treated in the slow rotator approach which properly accounts for the observed deviations from the $U$-spin relations for the hyperon magnetic moments. This makes possible a critical discussion of the $U$-spin selection rules for the radiative hyperon decays. The variation of the decay widths with strangeness is studied and a comparison with other treatments of the $SU(3)$ Skyrme model is performed in order to analyze the effects of flavor symmetry breaking.

15 pages Latex, no figures

References in corpus (6)

• Baryons as Three Flavor Solitons
• The position and the residues of the delta resonance pole in pion photoproduction
• Radiative Decays of Hyperons in the Skyrme Model: E2/M1 Transitions
• Magnetic Moments of the Octet Baryons in a Chiral Quark Potential Model
• Electro-excitation amplitudes of the Delta-isobar in the Skyrme model
• Hyperon Polarizabilities in the Bound State Soliton Model

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• The electroproduction of the $\Delta$(1232) in the chiral quark-soliton model
• Hyperon Radiative Decays in the 1/N_c Expansion
• Upper limit on the decay Sigma(1385)- --> Sigma- gamma, and cross section for gamma Sigma- --> Lambda pi-
• A covariant model for the decuplet to octet Dalitz decays
• Electromagnetic transition form factors, $E2/M1$ and $C2/M1$ ratios of the baryon decuplet
• Electromagnetic and weak hyperon properties in the Skyrme model
• Hyperons as collective excitations of chiral solitons