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Measurement of the bb-bar 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
- 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, DE
- Dorfan, JM
- Drewer, DC
- Elia, R
- Feldman, GJ
- Fernandes, D
- Field, RC
- Ford, WT
- Fordham, C
- Frey, R
- Fujino, D
- Gan, KK
- Gatto, C
- Gero, E
- Gidal, G
- Glanzman, T
- Goldhaber, G
- Gomez Cadenas JJ
- Gratta, G
- Grindhammer, G
- Grosse-Wiesmann, P
- Hanson, G
- Harr, R
- Harral, B
- Harris, FA
- Hawkes, CM
- Hayes, K
- Hearty, C
- Heusch, CA
- Hildreth, MD
- Himel, T
- Hinshaw, DA
- Hong, SJ
- Hutchinson, D
- Hylen, J
- Innes, WR
- Jacobsen, RG
- Jaros, JA
- Jung, CK
- et al.
Abstract
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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