# Measurement of the ratio of $B_c^+$ branching fractions to $J/\psi\pi^+$ and $J/\psi\mu^+\nu_\mu$ final states

Abstract : The first measurement that relates semileptonic and hadronic decay rates of the $B_c^+$ meson is performed using proton-proton collision data corresponding to 1.0 fb$^{-1}$ of integrated luminosity collected with the LHCb detector. The measured value of the ratio of branching fractions, ${\cal B}(B_c^+ \to J/\psi \pi^+)/{\cal B}(B_c^+\to J/\psi\mu^+\nu_\mu)=0.0469 \pm 0.0028 (stat.) \pm 0.0046 (syst.)$, is at the lower end of available theoretical predictions.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01021079
Contributor : Danielle Cristofol <>
Submitted on : Wednesday, July 9, 2014 - 9:17:14 AM
Last modification on : Monday, July 26, 2021 - 4:12:02 PM

### Citation

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Ziad Ajaltouni, et al.. Measurement of the ratio of $B_c^+$ branching fractions to $J/\psi\pi^+$ and $J/\psi\mu^+\nu_\mu$ final states. Physical Review D, American Physical Society, 2014, 90, pp.032009. ⟨10.1103/PhysRevD.90.032009⟩. ⟨in2p3-01021079⟩

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