Measurement of the B+ and B0 meson lifetimes
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The lifetimes of the B+ and B0 mesons have been measured using fully reconstructed decays. In a sample of ∼49 600J/ψ→μ+μ- decays recorded with the Collider Detector at Fermilab, 148±16 B+ and 121±16B0 mesons have been reconstructed using the silicon vertex detector. Unbinned likelihood fits to the proper lifetime distributions of these B mesons give τ+=1.61±0.16 (stat)±0.05 (syst) ps, τ0=1.57±0.18 (stat) ±0.08 (syst) ps, and τ+/τ0=1. 02±0.16 (stat) ±0.05 (syst). © 1994 The American Physical Society.
author list (cited authors)
Abe, F., Albrow, M., Amidei, D., Anway-Wiese, C., Apollinari, G., Areti, H., ... Zucchelli, S.