APS » PROLA » Phys. Rev. Lett. » Volume 64 » Issue 13

Phys. Rev. Lett. 64, 1491 - 1494 (1990)

Determination of Re(ɛ’/ɛ) by the simultaneous detection of the four KL,S→ππ decay modes

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J. R. Patterson et al.
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Received 18 December 1989

The E731 experiment at Fermilab has searched for direct CP violation in K0→ππ, which is parametrized by ɛ’/ɛ. For the first time all four of the KL,S→ππ modes were collected simultaneously, which greatly facilitated studies of systematic uncertainty. We find Re(ɛ’/ɛ)=-0.0004±0.0014(stat)±0.0006(syst). The result provides no evidence for direct CP violation.


©1990 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v64/p1491
DOI: 10.1103/PhysRevLett.64.1491
PACS: 13.25.+m, 11.30.Er, 14.40.Aq

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