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arXiv · hep-ph/0107299

Isospin breaking corrections to low-energy pi-K scattering

A. Nehme·P. Talavera
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Abstract

We evaluate the matrix elements for the processes pi^0 K^0 -> pi^0 K^0 and pi^- K^+ -> pi^0 K^0 in the presence of isospin breaking terms at leading and next-to-leading order. As a direct application the releveant combination of the S-wave scattering lengths involved in the pion-kaon atom lifetime is determined. We discuss the sensitivity of the results with respect to the input parameters.

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A. Nehme, P. Talavera. 2001-07-30. Isospin breaking corrections to low-energy pi-K scattering. https://doi.org/10.1103/physrevd.65.054023

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