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Electromagnetic properties of hadrons via the u-d mass difference and direct photon exchange

R Delbourgo, Dongsheng Liu, M D Scadron

hep-pharXiv:hep-ph/9808253

Abstract

We demonstrate that a u-d mass difference (which we estimate to be about 4 MeV) within quantum loops, can reproduce the effects of the Coleman-Glashow electromagnetic tadpole operator.

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