Evidence for the decay B+c → J/ψ3π+-

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. Anderson, R. AndreassenM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

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Evidence is presented for the decay B+c → J/ψ3π+- using proton-proton collision data, corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector. A signal yield of 32 ± 8 decays is found with a significance of 4.5 standard deviations. The ratio of the branching fraction of the B+c → J/ψ3π+- decay to that of the B+c → J/ψπ+ decay is measured to be B (B+c → J/ψ 3π+) / B (B+c → J/ψ π+) = 1.74 ± 0.44 ± 0.24, where the first uncertainty is statistical and the second is systematic.

Original languageEnglish
Article number148
Number of pages17
JournalJournal of High Energy Physics
Issue number5
Publication statusPublished - 30 May 2014


  • B physics
  • Branching fraction
  • Flavor Physics
  • Hadron-Hadron Scattering
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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