Search for D0D¯0 Mixing

R. Godang et al. (CLEO Collaboration)
Phys. Rev. Lett. 84, 5038 – Published 29 May 2000
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Abstract

We have studied the “wrong-sign” process D0K+π to search for D0D¯0 mixing. The data come from 9.0fb1 of e+e collisions at s10GeV recorded with the CLEO II.V detector. We measure the relative rate of the wrong-sign process D0K+π to the Cabibbo-favored process D¯0K+π to be R=(0.3320.065+0.063±0.040)%. We study D0K+π as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from D0D¯0 mixing. The amplitudes that describe D0D¯0 mixing, x and y, are consistent with zero. At the 95% C.L. and without assumptions concerning charge-parity ( CP) violating parameters, we find (1/2)x2<0.041% and 5.8%<y<1.0%.

  • Received 3 January 2000

DOI:https://doi.org/10.1103/PhysRevLett.84.5038

©2000 American Physical Society

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Vol. 84, Iss. 22 — 29 May 2000

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