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An Improved upper limit on the decay K^+ -> pi^+ mu^+ e^-

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arxiv hep-ex/0502020 v3 pith:IRPOUJQO submitted 2005-02-09 hep-ex

Aleksey Sher , R. Appel , G.S. Atoyan , B. Bassalleck , D.R. Bergman , N. Cheung , S. Dhawan , H. Do
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J. Egger S. Eilerts W. Harold V.V. Issakov H. Kaspar D.E. Kraus D.M. Lazarus P. Lichard J. Lowe J. Lozano H. Ma W. Majid S. Pislak A.A. Poblaguev P. Rehak A. Sher J.A. Thompson P. Truoel M.E. Zeller
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keywords limitupperbranchingdatadecaye865experimentratio
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abstract

Based on results of a search for the lepton-family-number-violating decay $K^+ \to \pi^+\mu^+ e^-$ with data collected by experiment E865 at the Alternating Gradient Synchrotron of Brookhaven National Laboratory, we place an upper limit on the branching ratio at $2.1 \times 10^{-11}$ (90% C.L.). Combining the results with earlier E865 data and those of a previous experiment, E777, an upper limit on the branching ratio of $1.3 \times 10^{-11}$ (90% C.L.) is obtained.

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Cited by 2 Pith papers

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  2. Features of Charged Lepton Flavor Violation in an $A_4$ Symmetric Neutrino Mass Model

    hep-ph 2025-07 reject novelty 4.0 of 10

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