Electromagnetic Contributions to Vector Meson Masses and Mixings
J. Bijnens, P. Gosdzinsky
Abstract
We use the 1/Nc method to estimate electromagnetic contributions to vector meson masses and mixings. We identify several new sources of rho-omega mixing coming from short-distance effects. We comment on the extraction of quark masses from the vector meson masses. We also present a simple group theoretical discussion of the electromagnetic mass differences.
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