High Energy Physics - Experiment
[Submitted on 13 Jul 2015 (v1), last revised 22 Oct 2015 (this version, v2)]
Title:Measurement of the branching fraction ratio $\mathcal{B}(B_c^+ \rightarrow ψ(2S)π^+)/\mathcal{B}(B_c^+ \rightarrow J/ψπ^+)$
View PDFAbstract:Using $pp$ collision data collected by LHCb at center-of-mass energies $\sqrt{s}$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$, the ratio of the branching fraction of the $B_c^+ \rightarrow \psi(2S)\pi^+$ decay relative to that of the $B_c^+ \rightarrow J/\psi\pi^+$ decay is measured to be 0.268 $\pm$ 0.032 (stat) $\pm$ 0.007 (syst) $\pm$ 0.006 (BF). The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainties on the branching fractions of the $J/\psi \rightarrow \mu^+\mu^-$ and $\psi(2S) \rightarrow \mu^+\mu^-$ decays. This measurement is consistent with the previous LHCb result, and the statistical uncertainty is halved.
Submission history
From: Yiming Li [view email][v1] Mon, 13 Jul 2015 16:34:36 UTC (597 KB)
[v2] Thu, 22 Oct 2015 09:44:35 UTC (157 KB)
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