Abstract
From collision data acquired with the CLEO detector at the Cornell Electron Storage Ring, we observe the non- decay with a statistical significance of 6.6 standard deviations, using the two-photon cascades to and . We determine and branching fraction . We set 90% C.L. upper limits for the transition to : () and (). We also determine ( at 90% C.L.), which bears upon the interpretation of .
- Received 21 September 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.182002
©2006 American Physical Society