Eur. Phys. J. A (2013) 49: 53
https://doi.org/10.1140/epja/i2013-13053-4

Letter

U-spin predictions of the transition magnetic moments of the electromagnetic decay of the Σ^*(1385) baryons

¹⁹⁸⁸³ University of Virginia, 22901, Charlottesville, Virginia, USA
²⁹⁸⁸³ Ohio University, 45701, Athens, Ohio, USA

^* e-mail: dustin@jlab.org

Received: 22 January 2013
Revised: 25 March 2013
Accepted: 15 April 2013
Published online: 3 May 2013

Abstract

The transition magnetic moments for decuplet-to-octet baryon electromagnetic decays are calculated from the CLAS experimental results and are compared with calculations to first order in the 1/N _c expansion of quantum chromodynamics (QCD) and new U-spin predictions. Using the U-spin predictions for the Σ ^*0 → Σ ⁰ γ and Σ ^*+ → Σ ⁺ γ decays, the SU(3)-forbidden transition Σ ^*− → Σ ⁻ γ is obtained. In addition, the doubly strange baryon radiative decay Ξ ^*0 → Ξ γ is predicted using U-spin.