Abstract
We use a sample of events collected with the BABAR detector at the PEP-II collider to study angular distributions in the rare decays , where is either or . For low dilepton invariant masses, , we measure a lepton forward-backward asymmetry and longitudinal polarization . For , we measure and .
- Received 28 April 2008
DOI:https://doi.org/10.1103/PhysRevD.79.031102
©2009 American Physical Society