- Abstract:
-
The rate Z → bb̄bb̄ was measured using about 2×106 hadronic decays collected by the DELPHI experiment in 1994 and 1995. Events were forced into 3-jets with ymin > 0.06 and a b-tag was required for every jet. The rate was measured to be: R4b = BR(Z → bb̄bb̄)/BR(Z → hadrons), = (6.0 ± 1.9(stst.)) ± 1.4(Syst.)) × 10-4 where the invariant mass of every bb̄ system is above twice the b quark mass. Using the value of R4b the probability of secondary production of a bb̄ pair from a gluon per hadro...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1016/S0370-2693(99)00905-3
-
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- Journal:
- PHYSICS LETTERS B
- Volume:
- 462
- Issue:
- 3-4
- Pages:
- 425-439
- Publication date:
- 1999-09-16
- DOI:
- ISSN:
-
0370-2693
- URN:
-
uuid:14ab9263-fbb2-49d7-b362-eb40fc0bac35
- Source identifiers:
-
21772
- Local pid:
- pubs:21772
- Language:
- English
- Copyright date:
- 1999
Journal article
Measurement of the rate of b(b)over-bar-b(b)over-bar events in hadronic Z decays and the extraction of the gluon splitting into b(b)over-bar
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