Abstract
We present measurements of the lifetime in the exclusive decay channel , with and , the lifetime in the decay with and , and the ratio of these lifetimes. The analysis is based on approximately of data recorded with the D0 detector in collisions at . The lifetime is determined to be , the lifetime , and the ratio . In contrast with previous measurements using semileptonic decays, this is the first determination of the lifetime based on a fully reconstructed decay channel.
- Received 21 October 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.102001
©2005 American Physical Society