Radiative decays of decuplet hyperons
  We calculate the radiative decay widths of decuplet hyperons in a chiral constituent quark model including electromagnetic exchange currents between quarks. Exchange currents contribute significantly to the E2 transition amplitude, while they largely cancel for the M1 transition amplitude. Strangeness suppression of the radiative hyperon decays is found to be weakened by exchange currents. Differences and similarities between our results and other recent model predictions are discussed. 
Georg Wagner (1,2), A. J. Buchmann (2) and Amand Faessler (2) ((1)   CSSM, Adelaide, (2) Institute for Theoretical Physics, ...