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arxiv: hep-ex/0005016 · v1 · submitted 2000-05-10 · ✦ hep-ex

An Improved Limit on the Rate Of Decay K+ -> pi+ mu+ e-

R.Appel , G.S.Atoyan , B.Bassalleck , D.R.Bergman , D.N.Brown , N.Cheung , S.Dhawan , H.Do
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J.Egger S.Eilerts C.Felder H.Fischer M.Gach W.Herold V.V.Issakov H.Kaspar D.E.Kraus D.M.Lazarus L.Leipuner P.Lichard J.Lowe J.Lozano H.Ma W.Majid W.Menzel S.Pislak A.A.Poblaguev V.E.Postoev A.L.Proskurjakov P.Rehak P.Robmann A.Sher J.A.Thompson P.Truoel H.Weyer M.E.Zeller
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The experiment E865 at BNL places an upper limit on the branching ratio for the decay K+ -> pi+ mu+ e- of 3.9x10^-11 (90% C.L.). Along with with other results this yields a combined upper limit on this branching ratio of 2.8x10^-11. A new upper limit on the branching ratio for pi0 -> mu+ e- of 3.8x10^-10 (90% C.L.) is also established. The experiment and analysis are described.

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