Measurements of the bb̄ production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP

L3 Collaboration

doi:10.1016/S0370-2693(00)00676-6

Measurements of the bb̄ production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP

L3 Collaboration

Physics

National Institute for Nuclear Physics
University of Geneva
University of Florence
CIEMAT
University of Lausanne
CERN
Swiss Federal Institute of Technology Zurich
Louisiana State University
Nuclear Physics Institute
University of Bucharest
University of Bologna
Alikhanov Institute for Theoretical and Experimental Physics
University of Michigan, Ann Arbor
Tata Institute of Fundamental Research
University of Rome La Sapienza
University of Alabama
IN2P3-CNRS
University of Amsterdam
Paul Scherrer Institute
University of Perugia
Massachusetts Institute of Technology
Carnegie Mellon University
RWTH Aachen University
Hungarian Academy of Sciences

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The measurements of R(b) = σ(e⁺e^- → bb̄)/σ(e⁺e^- → qq̄) and of the b quark forward-backward charge asymmetry, A(fb/b), at centre-of-mass energies above the Z pole are described. The measurement of R(b) is performed at √s- between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A(fb/b) is performed using the large statistics event sample collected at √s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at √s = 189 GeV are R(b) = 0.163 ± 0.013(stat.) ± 0.005 (syst.), A(fb/b) = 0.61 ± 0.18 (stat.) ± 0.09 (syst.).

Original language	English
Pages (from-to)	71-84
Number of pages	14
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	485
Issue number	1-3
DOIs	https://doi.org/10.1016/S0370-2693(00)00676-6
State	Published - Jul 13 2000

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@article{fe511fad068e4ba39edb10789706a025,

title = "Measurements of the b{\=b} production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP",

abstract = "The measurements of R(b) = σ(e+e- → b{\=b})/σ(e+e- → q{\=q}) and of the b quark forward-backward charge asymmetry, A(fb/b), at centre-of-mass energies above the Z pole are described. The measurement of R(b) is performed at √s- between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A(fb/b) is performed using the large statistics event sample collected at √s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at √s = 189 GeV are R(b) = 0.163 ± 0.013(stat.) ± 0.005 (syst.), A(fb/b) = 0.61 ± 0.18 (stat.) ± 0.09 (syst.).",

author = "\{L3 Collaboration\} and M. Acciarri and P. Achard and O. Adriani and M. Aguilar-Benitez and J. Alcaraz and G. Alemanni and J. Allaby and A. Aloisio and Alviggi, \{M. G.\} and G. Ambrosi and H. Anderhub and Andreev, \{V. P.\} and T. Angelescu and F. Anselmo and A. Arefiev and T. Azemoon and T. Aziz and P. Bagnaia and A. Bajo and L. Baksay and A. Balandras and Baldew, \{S. V.\} and S. Banerjee and Sw Banerjee and A. Barczyk and R. Barillere and L. Barone and P. Bartalini and M. Basile and R. Battiston and A. Bay and F. Becattini and U. Becker and F. Behner and L. Bellucci and R. Berbeco and J. Berdugo and P. Berges and B. Bertucci and Betev, \{B. L.\} and S. Bhattacharya and M. Biasini and A. Biland and Blaising, \{J. J.\} and Blyth, \{S. C.\} and Bobbink, \{G. J.\} and A. Bohm and L. Boldizsar and B. Borgia and I. Iashvili",

year = "2000",

month = jul,

day = "13",

doi = "10.1016/S0370-2693(00)00676-6",

language = "English",

volume = "485",

pages = "71--84",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Measurements of the bb̄ production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP

AU - L3 Collaboration

AU - Acciarri, M.

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Ambrosi, G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Angelescu, T.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Bajo, A.

AU - Baksay, L.

AU - Balandras, A.

AU - Baldew, S. V.

AU - Banerjee, S.

AU - Banerjee, Sw

AU - Barczyk, A.

AU - Barillere, R.

AU - Barone, L.

AU - Bartalini, P.

AU - Basile, M.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berbeco, R.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Bhattacharya, S.

AU - Biasini, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Bohm, A.

AU - Boldizsar, L.

AU - Borgia, B.

AU - Iashvili, I.

PY - 2000/7/13

Y1 - 2000/7/13

N2 - The measurements of R(b) = σ(e+e- → bb̄)/σ(e+e- → qq̄) and of the b quark forward-backward charge asymmetry, A(fb/b), at centre-of-mass energies above the Z pole are described. The measurement of R(b) is performed at √s- between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A(fb/b) is performed using the large statistics event sample collected at √s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at √s = 189 GeV are R(b) = 0.163 ± 0.013(stat.) ± 0.005 (syst.), A(fb/b) = 0.61 ± 0.18 (stat.) ± 0.09 (syst.).

AB - The measurements of R(b) = σ(e+e- → bb̄)/σ(e+e- → qq̄) and of the b quark forward-backward charge asymmetry, A(fb/b), at centre-of-mass energies above the Z pole are described. The measurement of R(b) is performed at √s- between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A(fb/b) is performed using the large statistics event sample collected at √s = 189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at √s = 189 GeV are R(b) = 0.163 ± 0.013(stat.) ± 0.005 (syst.), A(fb/b) = 0.61 ± 0.18 (stat.) ± 0.09 (syst.).

UR - https://www.scopus.com/pages/publications/0034644083

U2 - 10.1016/S0370-2693(00)00676-6

DO - 10.1016/S0370-2693(00)00676-6

M3 - Article

AN - SCOPUS:0034644083

SN - 0370-2693

VL - 485

SP - 71

EP - 84

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -

Measurements of the bb̄ production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP

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