Evidence for the decay $B_c^+ \rightarrow J/ψ3π^+ 2π^-$
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Adeva, B.
name: Adinolfi, M.
name: Affolder, A.
name: Ajaltouni, Z.
name: Albrecht, J.
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name: Ali, S.
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name: Gutierrez, O. Aquines
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Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Evidence is presented for the decay $B_c+\rightarrow J/ψ3π^+2π^-$ using proton-proton collision data, corresponding to an integrated luminosity of 3fb$^{-1}$, collected with the LHCb detector. A signal yield of $32\pm8$ decays is found with a significance of 4.5 standard deviations. The ratio of the branching fraction of the $B_c^+\rightarrow J/ψ3π^+ 2π^-$ decay to that of the $B_c^+ \rightarrow J/ψπ^+$ decay is measured to be $$ \frac{Br (B_c^+ \rightarrow J/ψ3π^+2π^)}{Br (B_c^+ \rightarrow J/ψπ^+)} = 1.74\pm0.44\pm0.24, $$ where the first uncertainty is statistical and the second is systematic.
description: 12 pages, 3 figures