Title

Evidence for the decay D0 → Κ+π-π+π-

Document Type

Article

Publication Date

12-1-2001

Abstract

We present a search for the "wrong-sign" decay D → Κ π π π using 9 fb 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 D̄ followed by a Cabibbo-favored process. Our result for the time-integrated wrong-sign rate relative to the decay D → Κ π π π is (0.0041 (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. 0 + - + - -1 + - 0 0 - + - + +0.0012 -0.0011

Publication Name

Physical Review D

Volume Number

64

Issue Number

11

Article

111101

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