Observation of direct CP violation in K-S,K-L -> pi pi decays

Citation
A. Alavi-harati et al., Observation of direct CP violation in K-S,K-L -> pi pi decays, PHYS REV L, 83(1), 1999, pp. 22-27
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
1
Year of publication
1999
Pages
22 - 27
Database
ISI
SICI code
0031-9007(19990705)83:1<22:OODCVI>2.0.ZU;2-1
Abstract
We have compared the decay rates of K-L and K-S to pi(+)pi(-) and pi(0)pi(0 ) final states using a subset of the data from the KTeV experiment (E832) a t Fermilab. We find that the direct-CP-violation parameter Re(epsilon'/epsi lon) is equal to [28.0 +/- 3.0(stat) +/- 2.8(syst)] x 10(-4). This result d efinitively establishes the existence of CP violation in a decay process.