Radiative meson decay in the cloudy bag model

We use the chiral SU(2${)}_{\mathrm{L}}$×SU(2${)}_{\mathrm{R}}$ cloudy bag model to calculate magnetic dipole radiative transitions among pseudoscalar and vector mesons. A new picture for these decays emerges. Three different dynamical mechanisms, photon emission by quarks, photon emission from the pion cloud, and pion emission by mesonic bags accompanied by a transition from a vector bag to a photon, contribute singly or in combination to the 11 possible M1 transitions. The model accounts well for the observed rates. In particular, pion-cloud effects are necessary to explain the $K^{\mathrm{*}}$ decays.