# Measurement of the time dependence of $B^{0}-\bar B^{0}$ oscillations using inclusive dilepton events

Abstract : 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}.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00006097
Contributor : Claudine Bombar <>
Submitted on : Tuesday, September 19, 2000 - 4:41:02 PM
Last modification on : Saturday, December 19, 2020 - 11:32:02 AM

### Citation

B. Aubert, A. Boucham, D. Boutigny, I. de Bonis, J. Favier, et al.. Measurement of the time dependence of $B^{0}-\bar B^{0}$ oscillations using inclusive dilepton events. International Conference on High-Energy Physics 30 ICHEP 2000, Jul 2000, Osaka, Japan. pp.1-17. ⟨in2p3-00006097⟩

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