Isospin violation in pion-kaon scattering

Abstract

We consider strong and electromagnetic isospin violation in near-threshold pion-kaon scattering. At tree level, such effects are small for all physical channels. We work out the complete one-loop corrections to the process pi^- K^+ -> pi^0 K^0. They come out rather small. We also show that the corresponding radiative cross section is highly suppressed at threshold.

Comments: 23 pp, 3 figs. (uses epsf), error corrected, version to appear in Nuclear Physics A