Search for \(B^0_s-\overline{B^0_s}\) oscillations and a measurement of \(B^0_d-\overline{B^0_d}\) oscillations using events with an inclusively reconstructed vertex

  • The DELPHI Collaboration
  • J. Abdallah et al.
Experimental Physics

Abstract.

Neutral B meson oscillations in the \(B^0_s-\overline{B^0_s}\) and \(B^0_d-\overline{B^0_d}\) systems were studied using a sample of about 4.0 million hadronic Z decays recorded by the DELPHI detector between 1992 and 2000. Events with a high transverse momentum lepton were removed and a sample of 770 k events with an inclusively reconstructed vertex was selected. The mass difference between the two physical states in the\(B^0_d-\overline{B^0_d}\) system was measured to be:

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The following limit on the width difference of these states was also obtained:

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As no evidence for \(B^0_s-\overline{B^0_s}\) oscillations was found, a limit on the mass difference of the two physical states was given:

\(\)

The corresponding sensitivity of this analysis is equal to 6.6 ps-1.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2003

Authors and Affiliations

  • The DELPHI Collaboration
  • J. Abdallah et al.
    • 1
  1. 1.LPNHE, IN2P3-CNRS, Univ. Paris VI et VII, Tour 33 (RdC), 4 place Jussieu, 75252 Paris Cedex 05, France FR

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