Search for time-dependent B0s - B0s-bar oscillations using a vertex charge dipole technique

Abstract

We report a search for B0s - B0s-bar oscillations using a sample of 400,000 hadronic Z0 decays collected by the SLD experiment. The analysis takes advantage of the electron beam polarization as well as information from the hemisphere opposite that of the reconstructed B decay to tag the B production flavor. The excellent resolution provided by the pixel CCD vertex detector is exploited to cleanly reconstruct both B and cascade D decay vertices, and tag the B decay flavor from the charge difference between them. We exclude the following values of the B0s - B0s-bar oscillation frequency: Delta m_s < 4.9 ps-1 and 7.9 < Delta m_s < 10.3 ps-1 at the 95% confidence level.

18 pages, 3 figures, replaced by version accepted for publication in Phys.Rev.D; results differ slightly from first version

References in corpus (5)

• Measurement of the b-quark fragmentation function in Z0 decays
• Heavy Quark Physics on the Lattice
• Remark on the Theoretical Uncertainty in B^0-\bar{B}^0 Mixing
• Highlights of the SLD Physics Program at the SLAC Linear Collider
• A Search for Time-Dependent B0s-B0sbar Oscillations Using Exclusively Reconstructed Ds+/- Mesons

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