Measurement of the Lifetime Difference in D0 Meson Decays

K. Abe et al. (Belle Collaboration)
Phys. Rev. Lett. 88, 162001 – Published 8 April 2002
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Abstract

We report a measurement of the D0D¯0 mixing parameter yCP using 23.4fb1 of data collected near the ϒ(4S) resonance with the Belle detector at KEKB. yCP is measured from the lifetime difference of D0 mesons decaying into the Kπ+ state and the CP-even eigenstate KK+. We find yCP=(0.5±1.00.8+0.7)×102, where the first error is statistical and the second is systematic, corresponding to a 95% confidence interval 0.030<yCP<0.020.

  • Received 6 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.162001

©2002 American Physical Society

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Vol. 88, Iss. 16 — 22 April 2002

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