Abstract
We present a search for the decay using pairs collected at the resonance with the BABAR detector at the SLAC PEP-II -Factory. A sample of events with one reconstructed semileptonic decay () is selected, and in the recoil a search for is performed. The is identified in the following channels: , , , and . We measure a branching fraction of . In the absence of a significant signal, we calculate an upper limit at the 90% confidence level of . We calculate the product of the meson decay constant and to be .
- Received 14 May 2007
DOI:https://doi.org/10.1103/PhysRevD.76.052002
©2007 American Physical Society