2000/08/23 by The BABAR Collaboration, B. Aubert, Aubert, B.
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0008054
17 pages, 5 postscript figures, contributed paper to ICHEP2000
arxiv created 2000/08/23 · openalex publication_date 2000/08/23 · arxiv updated 2009/11/30 · openalex created_date 2018/08/31 · openalex updated_date 2026/07/28
A preliminary study of time dependence of B0-anti-B0 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, DeltamB0, to be (0.507+/-0.015+/-0.022) x 1012 hbar-s-1.