Abstract
Using of annihilation data collected with the BABAR detector, we measure , , and , where the uncertainties are statistical and systematic, respectively. From these precision measurements, we test the standard model assumption of and charge current lepton universality and provide determinations of experimentally independent of the decay of a kaon.
- Received 2 December 2009
DOI:https://doi.org/10.1103/PhysRevLett.105.051602
©2010 American Physical Society