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Observation of Direct CP Violation in KS,Lππ Decays

A. Alavi-Harati et al. (KTeV Collaboration)
Phys. Rev. Lett. 83, 22 – Published 5 July 1999
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Abstract

We have compared the decay rates of KL and KS to π+π and π0π0 final states using a subset of the data from the KTeV experiment (E832) at Fermilab. We find that the direct-CP-violation parameter Re(ε/ε) is equal to [28.0±3.0(stat)±2.8(syst)]×104. This result definitively establishes the existence of CP violation in a decay process.

  • Received 27 May 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.22

©1999 American Physical Society

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See Also

A Universal Asymmetry

Phys. Rev. Focus 4, 1 (1999)

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Vol. 83, Iss. 1 — 5 July 1999

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