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arXiv · hep-ph/9508393

On the Corrections to Dashen's Theorem

Robert Baur·Res Urech
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Abstract

The electromagnetic corrections to the masses of the pseudoscalar mesons $π$ 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 theorem.

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Robert Baur, Res Urech. 1996-02-22. On the Corrections to Dashen's Theorem. https://doi.org/10.1103/physrevd.53.6552

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