An observation of direct-CP violation -: ε′/ε result from KTeV

被引：61

作者：

Hsiung, YB ^{[1
]}

机构：

[1] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2000年 / 86卷

关键词：

D O I：

10.1016/S0920-5632(00)00581-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 filed target run at Fermilab,. The result is, Re(epsilon'/epsilon) = (28.0 +/- 4.1) x 10(-4), nearly 7 sigma above zero obtained by a blind analysis. This firmly establishes the lone-sought ''dircct-CP violation" effect in the two-pion system (pi(+)pi(-) versus pi(0)pi(0)) of neutral kaon decays. Other new measurements of Delta m, tau(S), Delta phi and a limit on the diurnal variation of phi(+-) for testing CPT invariance from the same data sample are also presented.

引用

页码：312 / 321

页数：10

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