Measurement of the B0bar Lifetime and the B0B0bar Oscillation Frequency Using Partially Reconstructed B0bar --> D*+ ell- nu-bar Decays

Details Measurement of the B0bar Lifetime and the B0B0bar Oscillation Frequency Using Partially Reconstructed B0bar --> D*+ ell- nu-bar Decays Measurement of the B0bar Lifetime and the B0B0bar Oscillation Frequency Using Partially Reconstructed B0bar --> D*+ ell- nu-bar Decays

2005-07-12

arxiv.org/abs/hep-ex/0507054v2

Phys.Rev.D73:012004,2006

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 16 postscript figures

Scientific paper

10.1103/PhysRevD.73.012004

We present a simultaneous measurement of the B0bar lifetime tau_B0 and B0B0bar oscillation frequency Delta_md. We use a sample of about 50000 partially reconstructed B0bar --> D*+ ell- nu-bar decays identified with the BABAR detector at the PEP-II e+e- storage ring at SLAC. The flavor of the other B meson in the event is determined from the charge of another high-momentum lepton. The results are tau_B0 = (1.504 +/- 0.013 (stat) {+0.018}/{-0.013} (syst)) ps, Delta_md = (0.511 +/- 0.007 (stat) {+0.007}/{-0.006} (syst)) ps-1

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