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

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 $\pi \pi$ scattering is estimated and shown that it can be crucial for scattering lengths extraction from experimental data on $K_{e4}$ decays.

References in corpus (7)

• Cusps in K --> 3 pi decays
• Determination of the a0-a2 pion scattering length from K->pi+ pi0 pi0 decay
• Pion-pion scattering and the K->3pi decay amplitudes
• Observation of a cusp-like structure in the pizero-pizero invariant mass distribution from K+- ==> pi+- pizero pizero decay and determination of the pi-pi scattering lengths
• Isospin breaking in Kl4 decays
• Electromagnetic corrections to final state interactions in $K\to 3\pi$ decays
• Operator Approach to Isospin Violation in Pion Photoproduction

Cited by in corpus (3)

• Isospin breaking in Kl4 decays
• Theoretical progress on cusp effect and Kl4 decays
• The electromagnetic effects in $K_{e4}$ decay