Abstract
We report an analysis of decaying into with using a data sample containing nearly pairs collected with the BABAR detector at the PEP-II -Factory. We find no evidence for second-class currents, and we set an upper limit of 0.69% at 90% confidence level for the fraction of second-class currents in this decay mode.
- Received 20 April 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.041802
©2009 American Physical Society