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Measurement of the branching fraction ratio B(Bc+→ψ(2S)π+)/B(Bc+→J/ψπ+)
Using pp collision data collected by LHCb at center-of-mass energies s=7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb-1, the ratio of the branching fraction of the Bc+→ψ(2S)π+ decay relative to that of the Bc+→J/ψπ+ decay is measured to be 0.268±0.032(stat)±0.007(syst)±0.006(BF).
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