Abstract
This Letter presents the first strong evidence for the resolution of the excited mesons and as two separate states in fully reconstructed decays to . The mass of is measured to be and the mass difference between and is , giving the mass of the as . The production rate for and mesons is determined to be a fraction of the production rate of the meson.
- Received 23 May 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.172001
©2007 American Physical Society