A Dispersive Treatment of Kℓ4 Decays

A Dispersive Treatment of Kℓ4 Decays

Show other versions (1)

Kℓ4 are for several reasons an especially interesting decay channel of K mesons: Kℓ4 decays allow an accurate measurement of a combination of S-wave ππ 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 l...

Full description

Bibliographic Details
Main Authors: Stoffer Peter, Passemar Emilie, Colangelo Gilberto
Format: Article
Language:English
Published: EDP Sciences 2012-12-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20123705006
id doaj-e13d6de799b044cba2427c84d502df59
record_format Article
spelling doaj-e13d6de799b044cba2427c84d502df592021-08-02T06:01:05ZengEDP SciencesEPJ Web of Conferences2100-014X2012-12-01370500610.1051/epjconf/20123705006A Dispersive Treatment of Kℓ4 DecaysStoffer PeterPassemar EmilieColangelo GilbertoKℓ4 are for several reasons an especially interesting decay channel of K mesons: Kℓ4 decays allow an accurate measurement of a combination of S-wave ππ 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 Kℓ4 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. http://dx.doi.org/10.1051/epjconf/20123705006
collection DOAJ
language English
format Article
sources DOAJ
author Stoffer Peter
Passemar Emilie
Colangelo Gilberto
spellingShingle Stoffer Peter
Passemar Emilie
Colangelo Gilberto
A Dispersive Treatment of Kℓ4 Decays
EPJ Web of Conferences
author_facet Stoffer Peter
Passemar Emilie
Colangelo Gilberto
author_sort Stoffer Peter
title A Dispersive Treatment of Kℓ4 Decays
title_short A Dispersive Treatment of Kℓ4 Decays
title_full A Dispersive Treatment of Kℓ4 Decays
title_fullStr A Dispersive Treatment of Kℓ4 Decays
title_full_unstemmed A Dispersive Treatment of Kℓ4 Decays
title_sort dispersive treatment of kℓ4 decays
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2012-12-01
description Kℓ4 are for several reasons an especially interesting decay channel of K mesons: Kℓ4 decays allow an accurate measurement of a combination of S-wave ππ 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 Kℓ4 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.
url http://dx.doi.org/10.1051/epjconf/20123705006
work_keys_str_mv AT stofferpeter adispersivetreatmentofkl4decays
AT passemaremilie adispersivetreatmentofkl4decays
AT colangelogilberto adispersivetreatmentofkl4decays
AT stofferpeter dispersivetreatmentofkl4decays
AT passemaremilie dispersivetreatmentofkl4decays
AT colangelogilberto dispersivetreatmentofkl4decays
_version_ 1721240675964420096

Similar Items