Abstract
We report a measurement of the mixing parameter using of data collected near the resonance with the Belle detector at KEKB. is measured from the lifetime difference of mesons decaying into the state and the -even eigenstate . We find , where the first error is statistical and the second is systematic, corresponding to a confidence interval .
- Received 6 November 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.162001
©2002 American Physical Society