A Dispersive Treatment of Kl4 Decays

BORIS DOI
Description
K`4 decays are interesting for several reasons: They allow an accurate measurement of a combination of S-wave pp scattering lengths, one form factor of the decay is connected to the chiral anomaly and the decay is the best source for the determination of some low energy constants of ChPT. We present a dispersive approach to K`4 decays, which takes rescattering effects fully into account. Some fits to NA48/2 and E865 measurements and results of the matching to ChPT are
shown.
Date of Publication
2013
Publication Type
Conference Item
Subject(s)
Language(s)
en
Contributor(s)
Passemar, Emile
Additional Credits
Series
PoS - proceedings of science
Publisher
Scuola Internazionale Superiore di Studi Avanzati SISSA
ISSN
1824-8039
Title of Event
Access(Rights)
open.access
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