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A measurement of the \(\mathrm{B_s^0}\) lifetime using reconstructed \(\mathrm{ D_s^-}\) mesons

  • OPAL Collaboration
  • K. Ackerstaff et al.
Experimental physics
  • 19 Downloads

Abstract.

We report a measurement of the \(\mathrm{B_s^0}\) meson lifetime from \(\mathrm{B_s^0} \to \mathrm{ D_s^-} \rm{X}\) decays, where \(\mathrm{ D_s^-}\) mesons are reconstructed in the \(\mathrm{ D_s^-} \to \mathrm{\phi\pi^-}\) and \(\mathrm{ D_s^-}\to\mathrm{K^{*0}K^-}\) decay channels. From approximately 3.7 million hadronic \(\mathrm{Z}^0\) decays recorded by the OPAL detector at LEP a sample is selected containing 911 \(\pm\) 83 candidates, of which \(519 \pm 136\) are estimated to be from \(\mathrm{B_s^0}\) meson decays. Fitting the distribution of the distance from the beam spot to the decay vertex of the \(\mathrm{ D_s^-}\) candidates with an unbinned likelihood function we measure \(\) where the errors are statistical and systematic, respectively.

Keywords

Likelihood Function Opal Detector Decay Channel Beam Spot Decay Vertex 
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 1998

Authors and Affiliations

  • OPAL Collaboration
  • K. Ackerstaff et al.
    • 1
  1. 1. CERN, European Organisation for Particle Physics, CH-1211 Geneva 23, Switzerland CH

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