Publication Date

1997

Journal or Book Title

PHYSICAL REVIEW D

Abstract

We use the Cottingham method to calculate the pion and kaon electromagnetic mass differences with as few model-dependent inputs as possible. The constraints of chiral symmetry at low energy, QCD at high energy, and experimental data in between are used in the dispersion relation. We find excellent agreement with experiment for the pion mass difference. The kaon mass difference exhibits a strong violation of the lowest order prediction of Dashen’s theorem, in qualitative agreement with several other recent calculations.

Comments

This is a pre-published version which is collected from arXiv. The published version is at http://prd.aps.org/pdf/PRD/v55/i11/p7075_1.

Volume

55

Pages

7075-7092

Issue

11

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