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A study of B\(_s^0\) meson oscillation using D\(_{\rm s}^-\)-lepton correlations

  • The OPAL Collaboration
  • G. Abbiendi et al.
Experimental physics

Abstract.

From data collected around the Z resonance by the OPAL detector at LEP, a sample of B\(_s^0\) decays was obtained using D\(_s^-}\ell^+\) combinations, where the \(D_s^-\) was fully reconstructed in the \(\phi\pi^-, \mathrm{K}^{*0}\mathrm{K}^-\) and \(\mathrm{K}^0_{\mathrm{S}}\mathrm{K}^-\) decay channels or partially reconstructed in the \(\phi\ell^-\bar{\nu}(\mathrm{X})\) decay channel. These events were used to study \(\mathrm{B_s^0}\) oscillation. The flavor (b or \(\bar{b}\)) at decay was determined from the lepton charge while the flavor at production was determined from a combination of techniques. The expected sensitivity of the experiment is 4.1 ps\(^{-1}\). The experiment was not able to resolve the oscillatory behavior, and we deduced that the B\(_s^0\) oscillation frequency \(\Delta m_s > 1.0\) ps\(^{-1}\) at the 95% confidence level.

Keywords

Confidence Level Oscillation Frequency Opal Detector Decay Channel Oscillatory Behavior 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • The OPAL Collaboration
  • G. Abbiendi et al.
    • 1
  1. 1.Dipartimento di Fisica dell' Università di Bologna and INFN, 40126 Bologna, Italy IT

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