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MEASUREMENT OF THE GAMMA(B-B-OVER-BAR)/GAMMA(HAD) BRANCHING RATIO OF THE Z BY DOUBLE HEMISPHERE TAGGING

MEASUREMENT OF THE GAMMA(B-B-OVER-BAR)/GAMMA(HAD) BRANCHING RATIO OF THE Z BY DOUBLE HEMISPHERE TAGGING

ABREU P
•
ADAM W
•
ADYE T
altro
SCURI, Fabrizio
1995
1995
  • journal article

Periodico
ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS
ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS
Abstract
Two measurements of Gamma(b ($) over bar b)/Gamma(had) are presented. Both measurements use 250000 Z decays taken with the DELPHI detector in 1991 and rely mainly on the precision of the microvertex detector. One tagging method is as simple as possible so that background rates can be reliably predicted by simulation. The other one uses a more involved tagging technique and reduces the dependence on simulation as much as possible. Combining both results, Gamma(b ($) over bar b)/Gamma(had) is found to be 0.2209 +/- 0.0041 (stat.) +/- 0.0042(syst.) +/- 0.0018 (Gamma(c ($) over bar c)).
Two measurements of Gamma(b ($) over bar b)/Gamma(had) are presented. Both measurements use 250000 Z decays taken with the DELPHI detector in 1991 and rely mainly on the precision of the microvertex detector. One tagging method is as simple as possible so that background rates can be reliably predicted by simulation. The other one uses a more involved tagging technique and reduces the dependence on simulation as much as possible. Combining both results, Gamma(b ($) over bar b)/Gamma(had) is found to be 0.2209 +/- 0.0041 (stat.) +/- 0.0042(syst.) +/- 0.0018 (Gamma(c ($) over bar c)).
DOI
10.1007/BF01578666
WOS
WOS:A1995QL10800001
WOS:A1995QL10800001
Archivio
http://hdl.handle.net/11390/884110
http://hdl.handle.net/11390/884110
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0009182805
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0009182805
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