An Observation of Direct-CP Violation -[epsilon][prime][epsilon] Result from KTeV.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2002 |
ISBN-13 | : OCLC:68362656 |
ISBN-10 | : |
Rating | : 4/5 ( Downloads) |
Download or read book An Observation of Direct-CP Violation -[epsilon][prime][epsilon] Result from KTeV. written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.