Abstract
We present results of a study of the decay using a sample of events collected by the BESIII detector, and report the observation of a new process with a statistical significance of , in which decays to . Fitting to mass spectrum yields a mass , a width , and a product branching fraction . Signals for and are also clearly observed and measured.
- Received 9 July 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.182001
© 2011 American Physical Society