Published February 1, 1996 | Version Published
Journal Article Open

Measurements of Rb with impact parameters and displaced vertices

Creators

Abstract

We present measurements of Rb using the SLD at the SLC. The analyses use 2D and 3D impact parameter tags and a displaced 3D vertex tag which all exploit the small size and stability of the e+e- interaction point and the precision 3D CCD pixel vertex detector to achieve high bb¯-tagging efficiencies and purities. The combined measurement yields Rb=0.229±0.011 and is consistent with standard model predictions.

Additional Information

© 1996 The American Physical Society. Received 11 May 1995. We thank the staff of the SLC for their efforts in the challenging task of bringing submicrometer-sized stable colliding beams to the SLD for a unique physics program. We thank the technical staff at the collaborating institutions for their valiant support in the construction and maintenance of the SLD. This work was supported by Department of Energy Contracts Nos. DE-FG02-91ER40676 (BU), DEFG03-92ER40701 (CIT), DE-FG03-91ER40618 (UCSB), DE-FG03-92ER40689 (UCSC), DE-FG03-93ER40788 (CSU), DE-FG02-91ER40672 (Colorado), DE-FG02-91ER40677 (Illinois), DE-AC03-76SF00098 (LBL), DE-FG02-92ER40715 (Massachusetts), DE-AC02-76ER03069 (MIT), DE-FG06-85ER40224 (Oregon), DE-AC03-76SF00515 (SLAC), DE-FG05-91ER40627 (Tennessee), DE-AC02-76ER00881 (Wisconsin), DE-FG02-92ER40704 (Yale); National Science Foundation grants: PHY-91-13428 (UCSC), PHY-8921320 (Columbia), PHY-92-04239 (Cincinnati), PHY-88-17930 (Rutgers), PHY-88-19316 (Vanderbilt), PHY-92-03212 (Washington); the UK Science and Engineering Research Council (Brunel and RAL); the Istituto Nazionale di Fisica Nuclear of Italy (Bologna, Ferrara, Frascati, Pisa, Padova, Perugia); and the Japan-US Cooperative Research Project on High Energy Physics (Nagoya, Tohoku).

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Identifiers

Eprint ID
13157
Resolver ID
CaltechAUTHORS:ABEprd96a

Funding

Department of Energy (DOE)
DE-FG02-91ER40676
Department of Energy (DOE)
DE-FG03-92ER40701
Department of Energy (DOE)
DE-FG03-91ER40618
Department of Energy (DOE)
DE-FG03-92ER40689
Department of Energy (DOE)
DE-FG03-93ER40788
Department of Energy (DOE)
DE-FG02-91ER40672
Department of Energy (DOE)
DE-FG02-91ER40677
Department of Energy (DOE)
DE-AC03-76SF00098
Department of Energy (DOE)
DE-FG02-92ER40715
Department of Energy (DOE)
DE-AC02-76ER03069
Department of Energy (DOE)
DE-FG06-85ER40224
Department of Energy (DOE)
DE-AC03-76SF00515
Department of Energy (DOE)
DE-FG05-91ER40627
Department of Energy (DOE)
DE-AC02-76ER00881
Department of Energy (DOE)
DE-FG02-92ER40704
NSF
PHY-91-13428
NSF
PHY-8921320
NSF
PHY-92-04239
NSF
PHY-88-17930
NSF
PHY-88-19316
NSF
PHY-92-03212
Science and Engineering Research Council (SERC)
Istituto Nazionale di Fisica Nucleare (INFN)
Japan-US Cooperative Research Project on High Energy Physics

Dates

Created
2009-02-06
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Updated
2023-03-16
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