Evidence for the decay D0 → Κ+π-π+π-

Evidence for the decay D0 → Κ+π-π+π-

We present a search for the "wrong-sign" decay D0 → Κ+π-π+π- using 9 fb-1 of e+e- collisions on and just below the Y(4S) resonance. This decay can occur either through a doubly Cabibbo-suppressed process or through mixing to a D̄0 followed by a Cabibbo-favored process. Our result for the t...

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Bibliographic Details
Main Authors: Dytman, SA, Savinov, V, Chen, S, Hinson, J, Lee, J, Miller, D, Shibata, E, Shipsey, I, Pavlunin, V, Cronin-Hennessy, D, Lyon, A, Park, W, Thorndike, E, Coan, T, Gao, Y, Liu, F, Maravin, Y, Narsky, I, Stroynowski, R, Ye, J, Artuso, M, Boulahouache, C, Bukin, K, Dambasuren, E, Majumder, G
Format: Journal article
Language:English
Published: 2001
Description
Summary:We present a search for the "wrong-sign" decay D0 → Κ+π-π+π- using 9 fb-1 of e+e- collisions on and just below the Y(4S) resonance. This decay can occur either through a doubly Cabibbo-suppressed process or through mixing to a D̄0 followed by a Cabibbo-favored process. Our result for the time-integrated wrong-sign rate relative to the decay D0 → Κ-π+π-π+ is (0.0041-0.0011+0.0012(stat)±0.0004(syst))×(1.07 ±0.10)(phase space), which has a statistical significance of 3.9 standard deviations. ©2001 The American Physical Society.

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