Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Observation of direct-CP violation - {epsilon}{prime}{epsilon} from KTeV

Conference ·
OSTI ID:15111

The authors 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.

Research Organization:
Fermi National Accelerator Lab., Batavia, IL (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC02-76CH03000
OSTI ID:
15111
Report Number(s):
FERMILAB-Conf-99/337-E
Country of Publication:
United States
Language:
English

Similar Records

An observation of direct-CP violation - {epsilon}{prime}{epsilon} result from KTeV
Conference · Mon Dec 13 23:00:00 EST 1999 · OSTI ID:15112

Re({epsilon}{prime}/{epsilon})Result from KTeV - An observation of direct-CP violation
Conference · Tue Nov 09 23:00:00 EST 1999 · OSTI ID:14508

Observation of direct-CP violation
Conference · Tue Nov 09 23:00:00 EST 1999 · OSTI ID:14507