Abstract
We perform a search for the exclusive radiative decay , which is dominated by annihilation, in a sample of events collected with the BABAR detector at the PEP-II asymmetric-energy storage ring at SLAC. No significant signal is seen. We set an upper limit on the branching fraction of at the 90% confidence level.
- Received 16 January 2005
DOI:https://doi.org/10.1103/PhysRevD.72.091103
©2005 American Physical Society