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arXiv · 0704.2675

The isospin symmetry breaking effects in $K_{e4}$ decays

S. R. Gevorkyan·A. N. Sissakian·A. V. Tarasov·H. T. Torosyan·O. O. Voskresenskaya
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Abstract

The Fermi-Watson theorem is generalized to the case of two coupled channels with different masses and applied to final state interaction in $K_{e4}$ decays. The impact of considered effect on the phase of the $ππ$ scattering is estimated and shown that it can be crucial for scattering lengths extraction from experimental data on $K_{e4}$ decays.

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S. R. Gevorkyan, A. N. Sissakian, A. V. Tarasov, H. T. Torosyan, O. O. Voskresenskaya. 2008-05-16. The isospin symmetry breaking effects in $K_{e4}$ decays. https://doi.org/10.1134/s1063778810060098

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