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 — preprints:1995:ttp95-31 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP95-31 On the Corrections to Dashen's Theorem ====== + + + The electromagnetic corrections to the masses of the pseudoscalar + mesons $\pi$ and $K$ are considered. We calculate in chiral + perturbation theory the contributions which arise from resonances + within a photon loop at order $O(e^2 m_q)$. + Within this approach we find rather moderate deviations to Dashen's + + |**Robert Baur and  Res Urech**  | + |** Phys. Rev. D53 6552--6557 1996  **  | + | {{preprints:1995:ttp95-31.pdf|PDF}} {{preprints:1995:ttp95-31.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9508393|arXiv]]   | + | |