Measurement of the B0-anti-B0-Oscillation Frequency with Inclusive Dilepton Events

Abstract

The $B^0$-${\bar{B}}^0$ oscillation frequency has been measured with a sample of 23 million $\B\bar B$ pairs collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. In this sample, we select events in which both B mesons decay semileptonically and use the charge of the leptons to identify the flavor of each B meson. A simultaneous fit to the decay time difference distributions for opposite- and same-sign dilepton events gives $\Delta m_d=0.493\pm 0.012(stat)\pm 0.009(syst)$ ps${}^{-1}$.

7 pages, 1 figure, submitted to Physical Review Letters

References in corpus (3)

• The BABAR Detector
• Measurement of B0-anti-B0 Flavor Oscillations in Hadronic B0 Decays
• B Mixing

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