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# Measurement of the $B_c^+$ meson lifetime using $B_c^+ \to J\!/\!\psi\mu^+ \nu_{\mu} X$ decays

Abstract : The lifetime of the $B_c^+$ meson is measured using semileptonic decays having a $J\!/\!\psi$ meson and a muon in the final state. The data, corresponding to an integrated luminosity of $2\mathrm{~fb^{-1}}$, are collected by the LHCb detector in $pp$ collisions at a centre-of-mass energy of $8\,\mathrm{TeV}$. The measured lifetime is $\tau = 509 \pm 8 \pm 12 \mathrm{~fs},$ where the first uncertainty is statistical and the second is systematic.
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http://hal.in2p3.fr/in2p3-00937206
Contributor : Danielle Cristofol Connect in order to contact the contributor
Submitted on : Tuesday, January 28, 2014 - 8:18:35 AM
Last modification on : Thursday, December 16, 2021 - 2:10:27 PM

### Citation

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Ziad Ajaltouni, et al.. Measurement of the $B_c^+$ meson lifetime using $B_c^+ \to J\!/\!\psi\mu^+ \nu_{\mu} X$ decays. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2014, 74, pp.2839. ⟨10.1140/epjc/s10052-014-2839-x⟩. ⟨in2p3-00937206⟩

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