A Dispersive Treatment of Kl4 Decays

Stoffer, Peter; Colangelo, Gilberto; Passemar, Emile (2013). A Dispersive Treatment of Kl4 Decays. PoS - proceedings of science, CD12, 058. Scuola Internazionale Superiore di Studi Avanzati SISSA

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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.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)

UniBE Contributor:

Stoffer, Peter and Colangelo, Gilberto

Subjects:

500 Science > 530 Physics

ISSN:

1824-8039

Publisher:

Scuola Internazionale Superiore di Studi Avanzati SISSA

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

18 Jun 2014 14:51

Last Modified:

13 Dec 2014 14:14

BORIS DOI:

10.7892/boris.42534

URI:

https://boris.unibe.ch/id/eprint/42534

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