Measurement of the time dependence of B^0-anti-B^0 oscillations using inclusive dilepton events

Details Measurement of the time dependence of B^0-anti-B^0 oscillations using inclusive dilepton events Measurement of the time dependence of B^0-anti-B^0 oscillations using inclusive dilepton events

2000-08-23

arxiv.org/abs/hep-ex/0008054v1

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages, 5 postscript figures, contributed paper to ICHEP2000

Scientific paper

A preliminary study of time dependence of B^0-anti-B^0 oscillations using dilepton events is presented. The flavor of the B meson is determined by the charge sign of the lepton. To separate signal leptons from cascade and fake leptons we have used a method which combines several discriminating variables in a neural network. The time evolution of the oscillations is studied by reconstructing the time difference between the decays of the B mesons produced by the Y(4S) decay. With an integrated luminosity of 7.7 fb-1 collected on resonance by BABAR at the PEP-II asymmetric B Factory, we measure the difference in mass of the neutral B eigenstates, Delta_mB0, to be (0.507+/-0.015+/-0.022) x 10^{12} hbar-s^{-1}.

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