A detailed description of the analysis of the decay of neutral kaons to pi(+)pi(-) in the CPLEAR experiment

Citation
A. Apostolakis et al., A detailed description of the analysis of the decay of neutral kaons to pi(+)pi(-) in the CPLEAR experiment, EUR PHY J C, 18(1), 2000, pp. 41-55
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
1434-6044 → ACNP
Volume
18
Issue
1
Year of publication
2000
Pages
41 - 55
Database
ISI
SICI code
1434-6044(200012)18:1<41:ADDOTA>2.0.ZU;2-Z
Abstract
A detailed description is given of the analysis of neutral kaons decaying t o pi (+)pi (-), based on the complete set of data collected with the CPLEAR experiment. Using a novel approach involving initially strangeness-tagged K-0 and (K) over bar (0), the time-dependent decay-rate asymmetry has been measured. This asymmetry, resulting from the interference between the K-S a nd K-L decay amplitudes, has enabled both the magnitude and phase of the CP -violation parameter, eta (+-), to be measured, with a precision comparable to that of the current world-average values.