The isospin-symmetry-breaking effects in K{sub e4} decays

The isospin-symmetry-breaking effects in K{sub e4} decays

The Fermi-Watson theorem is generalized to the case of two coupled channels with different masses and applied to final-state interaction inK{sub e4} decays. The impact of the considered effect on the phase of {pi}{pi} scattering is estimated and it is shown that it can be crucial for the scattering...

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Veröffentlicht in:Physics of atomic nuclei 2010-06, Vol.73 (6)
Hauptverfasser: Gevorkyan, S. R., Sissakian, A. N., Tarasov, A. V., Torosyan, H. T., Voskresenskaya, O. O.
Format: Artikel
Sprache:eng
Schlagworte:
COUPLED CHANNEL THEORY
DATA
DECAY
DIMENSIONS
EXPERIMENTAL DATA
FINAL-STATE INTERACTIONS
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
ISOSPIN
LENGTH
MASS
MESON-MESON INTERACTIONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PION-PION INTERACTIONS
SCATTERING LENGTHS
SYMMETRY BREAKING
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Beschreibung
Zusammenfassung:The Fermi-Watson theorem is generalized to the case of two coupled channels with different masses and applied to final-state interaction inK{sub e4} decays. The impact of the considered effect on the phase of {pi}{pi} scattering is estimated and it is shown that it can be crucial for the scattering length extraction from experimental data on K{sub e4} decays.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778810060098