The decay Bc+to → J/ψ K+ is observed for the first time using a data sample, corresponding to an integrated luminosity of 1.0 fb-1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. A yield of 46 ± 12 events is reported, with a significance of 5.0 standard deviations. The ratio of the branching fraction of Bc+to → J/ψ K+ to that of Bc+to → J/ψ K+ is measured to be 0.069 ± 0.019 ± 0.005, where the first uncertainty is statistical and the second is systematic. © 2013 Cern for the benefit of the LHCb collaboration.
CITATION STYLE
Aaij, R., Beteta, C. A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., … Zvyagin, A. (2013). First observation of the decay Bc+to → J/ψ K+. Journal of High Energy Physics, 2013(9). https://doi.org/10.1007/JHEP09(2013)075
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