Abstract
The first observation of the decay is reported from an analysis of of collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay to be where the first uncertainty is statistical and the second is systematic. The significance of the signal is . Evidence, with significance, for decays is also presented. The relative branching fraction is measured to be These channels are of interest to study the mechanisms behind hadronic decays, and open new possibilities for violation analyses with larger data sets.
- Received 26 July 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.131801
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© 2012 CERN, for the LHCb Collaboration