Bc at Cdf

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Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006fuin.conf..372w&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the 21st Lake Louise Winter Institute. Held 17-23 February 2006 in Lake Louise, Alberta

Physics

Scientific paper

We report CDF results on the B-c meson 1 in Run II. The B-c meson has been observed in semileptonic decays, B-c -> J/ψ l-ν X, where ℓ = e, μ at a significance greater than 5σ in both channels. The B-c -> J/ψ l-ν X observations have resulted in measurements of the relative production times branching ratio with respect to B- → J/ψ K- decays and a precise determination of the lifetime of the B-c: τ (B-c) = 0.474+0.073-0.066(stat.) ± 0.033 (syst.) ps. Also, an observation of B-c -> J/ψ π - decays at a significance exceeding 6σ results in a precise determination of the mass of the B-c: M(B-c) = 6275.2 ± 4.3 (stat.) ± 2.3 (syst.) MeV/c2.

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