On the Corrections to Dashen's Theorem

Details On the Corrections to Dashen's Theorem On the Corrections to Dashen's Theorem

1995-08-29

arxiv.org/abs/hep-ph/9508393v2

Phys.Rev. D53 (1996) 6552-6557

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, sligthly enlarged version; a numerical error is corrected and the embedding of the figures is improved. The complete

Scientific paper

10.1103/PhysRevD.53.6552

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
theorem.

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