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Radiative Transitions in Charmonium

Jozef Dudek·Robert Edwards·David Richards
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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 $Q^2 = 0$, 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.

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Jozef Dudek, Robert Edwards, David Richards. 2005-09-30. Radiative Transitions in Charmonium. https://arxiv.org/abs/hep-lat/0510003

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