• Date: December 3, 2004

• Speaker: Saverio D'Auria (University of Glasgow)

• Title: B_c: Fully reconstructed decays and mass measurement

• Abstract:
We report on a measurement of the mass of the B_c meson by recontructing the decay B_c --> J/\psi + pi, with J/\psi --> mu+ mu-. The measurement is based on 360 pb^{-1} of integrated pp-bar luminosity at 1.96 TeV collected by the CDF II experiment at the Fermilab Tevatron Collider. Based on a fit to the mass spectrum giving a signal of 18.9 +- 5.7 events, the mass of the B_c meson is measured to be 6287.0 +- 4.8 (stat) +- 1.1 (syst) MeV/c^2.

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