Search for time-dependent Bs0Bs0¯ oscillations using exclusively reconstructed Ds± mesons

Kenji Abe et al. (SLD Collaboration)
Phys. Rev. D 66, 032009 – Published 29 August 2002
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Abstract

A search for Bs0Bs0¯ oscillations is performed using a sample of 400 000 hadronic Z0 decays collected by the SLAC Large Detector experiment. The Bs0 candidates are reconstructed in the Bs0DsX channel with Dsφπ, K*0K. The Bs0 production flavor is determined using the large forward-backward asymmetry of polarized Z0bb¯ decays and charge information in the hemisphere opposite that of the Bs0 candidate. The decay flavor is tagged by the charge of the Ds±. From a sample of 361 candidates with an average Bs0 purity of 40%, we exclude the following values of the oscillation frequency: Δms<1.4ps1 and 2.4<Δms<5.3ps1 at the 95% confidence level.

  • Received 24 June 2002

DOI:https://doi.org/10.1103/PhysRevD.66.032009

©2002 American Physical Society

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Vol. 66, Iss. 3 — 1 August 2002

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