Abstract
The ratio of branching fractions of the radiative decays and has been measured using of collisions at a center of mass energy of , collected by the LHCb experiment. The value obtained is , where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions . Using the world average for , the branching fraction is measured to be , which is the most precise measurement to date.
- Received 1 March 2012
DOI:https://doi.org/10.1103/PhysRevD.85.112013
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© 2012 CERN, for the LHCb collaboration