Measurement of the B- and (B)over-bar(0) meson lifetimes using semileptonic decays

Measurement of the B- and (B)over-bar(0) meson lifetimes using semileptonic decays

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The lifetimes of the B- and B̄0 mesons are measured using the partially reconstructed semileptonic decays B̄ → Dℓ-v̄X, where D is either a D0 or D*+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb-1 of pp̄ collisions at...

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Bibliographic Details
Main Authors: Abe, F, Akimoto, H, Akopian, A, Albrow, MG, Amendolia, SR, Amidei, D, Antos, J, AnwayWiese, C, Aota, S, Apollinari, G, Asakawa, T, Ashmanskas, W, Atac, M, Azfar, F, AzziBacchetta, P, Bacchetta, N, Badgett, W, Bagdasarov, S, Bailey, M, Bao, J, deBarbaro, P, BarbaroGaltieri, A, Barnes, V, Barnett, B, Barzi, E
Format: Journal article
Published: 1996
Description
Summary:The lifetimes of the B- and B̄0 mesons are measured using the partially reconstructed semileptonic decays B̄ → Dℓ-v̄X, where D is either a D0 or D*+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb-1 of pp̄ collisions at √s = 1.8 TeV. We measure the decay length distributions and find the lifetimes to be τ(B-) = 1.56 ± 0.13 ± 0.06 ps and τ(B-0) = 1.54 ± 0.08 ± 0.06 ps, and the ratio of lifetimes to be τ(B-)/τ(B-0) = 1.01 ± 0.11 ± 0.02, where the first uncertainties are statistical and the second are systematic.

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