Measurement of the B+c meson lifetime using B+c → J/ψ μ+ νμ X decays
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Date
2014
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Abstract
The lifetime of the B+c meson is measured using semileptonic decays having a J/ψ meson and a muon in the final state. The data, corresponding to an integrated luminosity of 2 fb−1, are collected by the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The measured lifetime is τ = 509 ± 8 ± 12 fs, where the first uncertainty is statistical and the second is systematic. © 2014, CERN for the benefit of the LHCb collaboration.