An observation of direct-CP violation - {epsilon}{prime}{epsilon} result from KTeV
Conference
·
OSTI ID:15112
We report the first KTeV measurement for the search of direct-CP violation by using 23% of the data sample collected in the 1996-97 fixed target run at Fermilab. The result is, Re({epsilon}{prime}/{epsilon}) = (28.0 {+-} 4.1) x 10{sup -4}, nearly 7{delta} above zero obtained by a blind analysis. This firmly establishes the long-sought ''direct-CP violation'' effect in the two-pion system ({pi}{sup +}{pi}{sup -} versus {pi}{sup 0}{pi}{sup 0}) of neutral kaon decays. Other new measurements of {Delta}m, {tau}{sub s}, {Delta}{phi} and a limit on the diurnal variation of {phi}{sub +-} for testing CPT invariance from the same data sample are also presented.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 15112
- Report Number(s):
- FERMILAB-Conf-99/338-E; TRN: US0204564
- Resource Relation:
- Conference: QCD Euroconference 99, Montpellier (FR), 07/07/1999--07/13/1999; Other Information: PBD: 14 Dec 1999
- Country of Publication:
- United States
- Language:
- English
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