Measurement of the Lifetime Difference in D0 Meson Decays
Abstract
We report a measurement of the D0-Dbar0 mixing parameter yCP using 23.4 fb-1 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 K-π+ state and the CP-even eigenstate K-K+. We find yCP = (-0.5+/-1.0+0.7-0.8)×10-2, where the first error is statistical and the second is systematic, corresponding to a 95% confidence interval -0.030<yCP<0.020.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2002
- DOI:
- 10.1103/PhysRevLett.88.162001
- arXiv:
- arXiv:hep-ex/0111026
- Bibcode:
- 2002PhRvL..88p2001A
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- 10 pages, 3 figures