Electromagnetic properties of hadrons via the $u-d$ mass difference and direct photon exchange
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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.
14 pages, RevTeX. Replacement includes $a_0$ tadpole contribution. To appear in Phys Rev D
14 pages, RevTeX. Replacement includes $a_0$ tadpole contribution. To appear in Phys Rev D