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Measurement of the bb fraction in hadronic Z decays

  • Author(s): Kral, JF
  • Abrams, GS
  • Adolphsen, CE
  • Averill, D
  • Ballam, J
  • Barish, BC
  • Barklow, T
  • Barnett, BA
  • Bartelt, J
  • Bethke, S
  • Blockus, D
  • Bonvicini, G
  • et al.

Using isolated leptons reconstructed in the Mark II detector to tag bb events, we measure the fraction of bb events in hadronic Z0 decays to be 0.23-0.09+0.11, in good agreement with the standard-model prediction of 0.22. We find (Zbb)=0.43-0.17+0.21 GeV. © 1990 The American Physical Society.

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