Abstract
We report the first observation of the exclusive decay process using a sample of meson pairs collected in the Belle detector at the KEKB asymmetric energy collider. We measure branching fractions of and , where the first error is statistical and the second is systematic. These modes constitute approximately of the total number of decays. No evidence is seen for and we set an upper limit for this branching fraction.
- Received 9 May 2001
DOI:https://doi.org/10.1103/PhysRevLett.87.161601
©2001 American Physical Society