Abstract
We use of collision data collected at the resonance with the BABAR detector to measure the radiative transition rate of with a sum of 38 exclusive final states. The inclusive branching fraction with a minimum photon energy of 1.9 GeV is found to be where the first uncertainty is statistical and the second is systematic. We also measure the first and second moments of the photon energy spectrum and extract the best-fit values for the heavy-quark parameters, and , in the kinetic and shape function models.
- Received 11 July 2012
DOI:https://doi.org/10.1103/PhysRevD.86.052012
© 2012 American Physical Society