The electromagnetic effects in $K_{e4}$ decay
S.R. Gevorkyan, A.N. Sissakian, A.V. Tarasov, H.T. Torosyan, O.O., Voskresenskaya
TL;DR
This paper investigates how electromagnetic interactions and isospin symmetry breaking affect the extraction of the $\
Contribution
It provides an analysis of electromagnetic and mass difference effects on the $\
Findings
Electromagnetic interactions influence the $\
Mass differences cause measurable isospin breaking effects
The study refines the method for extracting scattering lengths from $K_{e4}$ decay
Abstract
The final state interaction of pions in decay allows one to obtain the value of the isospin and angular momentum zero scattering length .We take into account the electromagnetic interaction of pions and isospin symmetry breaking effects caused by different masses of neutral and charged pions and estimate the impact of these effects on the procedure of scattering length extraction from decay.
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