Branching Ratio Measurement of the Decay KLe+eμ+μ

A. Alavi-Harati et al. (KTev Collaboration)
Phys. Rev. Lett. 87, 111802 – Published 22 August 2001
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Abstract

We have collected a 43 event sample of the decay KLe+eμ+μ with negligible backgrounds and measured its branching ratio to be (2.62±0.40±0.17)×109. We see no evidence for CP violation in this decay. In addition, we set the 90% confidence upper limit on the combined branching ratios for the lepton flavor violating decays KLe±e±μμ at B(KLe±e±μμ)1.23×1010, assuming a uniform phase space distribution.

  • Received 14 March 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.111802

©2001 American Physical Society

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Vol. 87, Iss. 11 — 10 September 2001

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