Radiative Transitions in Charmonium
arXiv:hep-lat/0510003
Abstract
The form factors for the radiative transitions between charmonium mesons are investigated. We employ an anisotropic lattice using a Wilson gauge action, and domain-wall fermion action. We extrapolate the form factors to , corresponding to a real photon, using quark-model-inspired functions. Finally, comparison is made with photocouplings extracted from the measured radiative widths, where known. Our preliminary results find photocouplings commensurate with these experimentally extracted values.
6 pages, 7 figures, poster presented at Lattice 2005 (Heavy Quark Physics)