Skip to main content
Open Access Publications from the University of California

UC Berkeley

UC Berkeley Previously Published Works bannerUC Berkeley

Measurement of the bb-bar fraction in hadronic Z0 decays with precision vertex detectors.

  • Author(s): Jacobsen, RG;
  • Koetke, DS;
  • Adolphsen, CE;
  • Fujino, D;
  • Schumm, BA;
  • Wagner, SR;
  • Alexander, JP;
  • Averill, D;
  • Barish, BC;
  • Barklow, T;
  • Barnett, BA;
  • Blockus, D;
  • Boyarski, A;
  • Brabson, B;
  • Breakstone, A;
  • Bulos, F;
  • Burchat, PR;
  • Burke, DL;
  • Cence, RJ;
  • Chapman, J;
  • Chmeissani, M;
  • Cords, D;
  • Coupal, DP;
  • Dauncey, P;
  • DeStaebler, HC;
  • Dorfan, JM;
  • Drell, PS;
  • Drewer, DC;
  • Durrett, D;
  • Elia, R;
  • Feldman, GJ;
  • Field, RC;
  • Ford, WT;
  • Fordham, C;
  • Frey, R;
  • Gan, KK;
  • Gero, E;
  • Gidal, G;
  • Glanzman, T;
  • Goldhaber, G;
  • Gomez Cadenas JJ;
  • Gratta, G;
  • Hanson, G;
  • Harr, R;
  • Harral, B;
  • Harris, FA;
  • Hayes, K;
  • Hearty, C;
  • Heusch, CA;
  • Hildreth, MD;
  • Himel, T;
  • Hinshaw, DA;
  • Hong, SJ;
  • Hutchinson, D;
  • Hylen, J;
  • Innes, WR;
  • Jaros, JA;
  • Jung, CK;
  • Kadyk, JA;
  • Kenney, C;
  • King, M;
  • Komamiya, S;
  • Kowalski, LA;
  • Kral, JF
  • et al.

We have measured the fraction of bb» events in hadronic Z0 decays, Rbb», using the vertex detector system of the Mark II detector at the SLAC Linear Collider. We tag bb» events by requiring the coincidence of three or more tracks with significant impact parameters. This tag is 50% efficient and results in a sample of 85% purity. We find Rbb»=0.251+0.049+0.030, in good agreement with other measurements and the standard model prediction. © 1991 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View