B lifetime measurements with exclusively reconstructed B decays

Details B lifetime measurements with exclusively reconstructed B decays B lifetime measurements with exclusively reconstructed B decays

2000-11-02

arxiv.org/abs/hep-ex/0011007v1

Int.J.Mod.Phys. A16S1A (2001) 413-415

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 2 postscript figues, submitted to DPF2000

Scientific paper

10.1142/S0217751X0100708X

Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetime of the B0 and B+ mesons. The data sample consists of 7.4 fb-1 collected near the Y(4S) resonance. B0 and B+ mesons are fully reconstructed in several exclusive hadronic decay modes to charm and charmonium final states. The B lifetime are determined from the flight length difference between the two B mesons. The preliminary measurements of the lifetimes are tau_{B0} = 1.506 +/- 0.052 (stat) +/- 0.029 (syst) ps tau_{B+} = 1.602 +/- 0.049 (stat) +/- 0.035 (syst) ps and of their ratio is tau_{B+}/tau_{B0} = 1.065 +/- 0.044 (stat) +/- 0.021 (syst).

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