Evidence for the decay $B_c^+ \rightarrow J/\psi 3\pi^+ 2\pi^-$ - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Journal of High Energy Physics Year : 2014

Evidence for the decay $B_c^+ \rightarrow J/\psi 3\pi^+ 2\pi^-$

R. Aaij
  • Function : Author
J. He
Marie Nicol
  • Function : Author
  • PersonId : 901312
J. Cogan
O. Leroy
J. Serrano


Evidence is presented for the decay $B_c+\rightarrow J/\psi 3\pi^+2\pi^-$ 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 $B_c^+\rightarrow J/\psi 3\pi^+ 2\pi^-$ decay to that of the $B_c^+ \rightarrow J/\psi \pi^+$ decay is measured to be $$ \frac{Br (B_c^+ \rightarrow J/\psi 3\pi^+2\pi^)}{Br (B_c^+ \rightarrow J/\psi \pi^+)} = 1.74\pm0.44\pm0.24, $$ where the first uncertainty is statistical and the second is systematic.

Dates and versions

in2p3-00969257 , version 1 (02-04-2014)



R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Evidence for the decay $B_c^+ \rightarrow J/\psi 3\pi^+ 2\pi^-$. Journal of High Energy Physics, 2014, 5, pp.148. ⟨10.1007/JHEP05(2014)148⟩. ⟨in2p3-00969257⟩
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