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Phys. Rev. D 64, 111101(R) (2001) [5 pages]

Evidence for the decay D0K+π-π+π-

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S. A. Dytman et al. (CLEO Collaboration)
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Received 10 August 2001; published 31 October 2001

We present a search for the “wrong-sign” decay D0K+π-π+π- using 9fb-1 of e+e- collisions on and just below the Υ(4S) resonance. This decay can occur either through a doubly Cabibbo-suppressed process or through mixing to a D0 followed by a Cabibbo-favored process. Our result for the time-integrated wrong-sign rate relative to the decay D0K-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

URL:
http://link.aps.org/doi/10.1103/PhysRevD.64.111101
DOI:
10.1103/PhysRevD.64.111101
PACS:
13.25.Ft, 12.15.Ff, 14.40.Lb