Measurement of the branching fraction ratio $\mathcal{B}(B_c^+ \rightarrow ψ(2S)π^+)/\mathcal{B}(B_c^+ \rightarrow J/ψπ^+)$
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Adeva, B.
name: Adinolfi, M.
name: Affolder, A.
name: Ajaltouni, Z.
name: Akar, S.
name: Albrecht, J.
name: Alessio, F.
name: Alexander, M.
name: Ali, S.
name: Alkhazov, G.
name: Cartelle, P. Alvarez
name: Alves, A. A.
name: Amato, S.
name: Amerio, S.
name: Amhis, Y.
name: An, L.
name: Anderson, J.
name: Andreassi, G.
name: Andreotti, M.
name: Andrews, J. E.
name: Appleby, R. B.
name: Gutierrez, O. Aquines
name: Archilli, F.
name: d'Argent, P.
name: Artamonov, A.
name: Artuso, M.
name: Aslanides, E.
name: Auriemma, G.
name: Baalouch, M.
name: Bachmann, S.
name: Back, J. J.
name: Badalov, A.
name: Baesso, C.
name: Baldini, W.
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name: Barter, W.
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name: Beaucourt, L.
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name: Bediaga, I.
name: Bel, L. J.
name: Bellee, V.
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name: Bencivenni, G.
name: Benson, S.
name: Benton, J.
name: Berezhnoy, A.
name: Bernet, R.
name: Bertolin, A.
name: Bettler, M. -O.
name: van Beuzekom, M.
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name: Bifani, S.
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name: Birnkraut, A.
name: Bizzeti, A.
name: Blake, T.
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name: Bocci, V.
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name: Brett, D.
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name: Britton, T.
name: Brodzicka, J.
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name: Gomez, M. Calvo
name: Campana, P.
name: Perez, D. Campora
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name: Carbone, A.
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name: Akiba, K. Carvalho
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Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $B_c^+ \rightarrow ψ(2S)π^+$ decay relative to that of the $B_c^+ \rightarrow J/ψπ^+$ 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 $J/ψ\rightarrow μ^+μ^-$ and $ψ(2S) \rightarrow μ^+μ^-$ decays. This measurement is consistent with the previous LHCb result, and the statistical uncertainty is halved.
description: 17 pages including author list, 2 figures