Measurement of the B^0 and B^+ meson lifetimes with fully reconstructed hadronic final states

Details Measurement of the B^0 and B^+ meson lifetimes with fully reconstructed hadronic final states Measurement of the B^0 and B^+ meson lifetimes with fully reconstructed hadronic final states

2001-07-09

arxiv.org/abs/hep-ex/0107019v1

Phys.Rev.Lett.87:201803,2001

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.87.201803

The B0 and B+ meson lifetimes have been measured in e+e- annihilation data collected in 1999 and 2000 with the BABAR detector at center-of-mass energies near the Upsilon(4S) resonance. Events are selected in which one B meson is fully reconstructed in a hadronic final state while the second B meson is reconstructed inclusively. A combined fit to the B0 and the B+ decay time difference distributions yields tau_{B0} = 1.546 +/- 0.032 (stat) +/- 0.022(syst) ps, tau_{B+} = 1.673 +/- 0.032 (stat) +/- 0.023 (syst) ps and tau_{B+} / tau_{B0} = 1.082 +/- 0.026 (stat) +/- 0.012 (syst).

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