Measurement of the BS 0 meson lifetime using semileptonic decays
Physical Review D - Particles, Fields, Gravitation and Cosmology 59:3 (1999) 1-14
Abstract:
The lifetime of the BS0 meson is measured using the semileptonic decay BS0→DS-l+νX. The data sample consists of about 110 pb-1 of pp̄ collisions at √s=1.8 TeV collected by the CDF detector at Fermilab. Four different DS- decay modes are reconstructed resulting in approximately 600 DS-l+ signal events. The BS0 meson lifetime is determined to be τ(BS0)=(1.36±0.09-0.05+0.06) ps, where the first and second uncertainties are statistical and systematic, respectively. The BS0 meson decay length distribution is examined for a lifetime difference ΔΓ/Γ between the two mass eigenstates of the BS0 meson. An upper limit of ΔΓ/Γ<0.83 is set at the 95% confidence level.Measurement of the mass splittings between the bb¯χb,J(1P) states
Physical Review D American Physical Society (APS) 59:3 (1999) 032003
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