Abstract
We report the first observation of two resonancelike structures in the invariant mass distribution near in exclusive decays. From a Dalitz plot analysis in which the mass structures are represented by Breit-Wigner resonance amplitudes, we determine masses and widths of: , , , and ; and product branching fractions of and , respectively. Here the first uncertainty is statistical, the second is systematic. The significance of each of the structures exceeds , including the systematic uncertainty from various fit models. This analysis is based on events collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider.
7 More- Received 9 July 2008
DOI:https://doi.org/10.1103/PhysRevD.78.072004
©2008 American Physical Society