Observation of the Λ0 b → J/ψ pπ− decay
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© The Authors. The first observation of the Cabibbo-suppressed decay V0b → J/ψpπ− is reported using a data sample of proton-proton collisions at 7 and 8TeV, corresponding to an integrated luminosity of 3 fb−1. A prominent signal is observed and the branching fraction relative to the decay mode V0b → J/ψpK− is determined to be B[Equations Found] A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be [Equations Found], which is compatible with CP symmetry at the 2.2σ level.
Date issued
2014-01-01Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. Department of PhysicsJournal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
The Lhcb, Collaboration, et al. "Observation of the ?0b ? J/?pp- Decay." Journal of High Energy Physics 2014 7 (2014): 1-19.
Version: Final published version