Measurement of R and search for the top quark in e+e- annihilation between 39.8 and 45.2 GeV

M. Althoff; W. Braunschweig; F. J. Kirschfink; K. Lübelsmeyer; H. U. Martyn; G. Peise; J. Rimkus; P. Rosskamp; H. G. Sander; D. Schmitz; H. Siebke; W. Wallraff; H. M. Fischer; H. Hartmann; W. Hillen; A. Jocksch; G. Knop; L. Köpke; H. Kolanoski; H. Kück; V. Mertens; R. Wedemeyer; M. Wollstadt; Y. Eisenberg; K. Gather; H. Hultschig; P. Joos; U. Kötz; H. Kowalski; A. Ladage; B. Löhr; D. Lüke; P. Mättig; D. Notz; R. J. Nowak; J. Pyrlik; M. Rushton; W. Schütte; D. Trines; G. Wolf; Ch Xiao; R. Fohrmann; E. Hilger; T. Kracht; H. L. Krasemann; P. Leu; E. Lohrmann; D. Pandoulas; G. Poelz; K. U. Pösnecker; B. H. Wiik; R. Beuselinck; D. M. Binnie; A. J. Campbell; P. J. Dornan; B. Foster; D. A. Garbutt; C. Jenkins; T. D. Jones; W. G. Jones; J. McCardle; J. K. Sedgbeer; J. Thomas; W. A.T. Wan Abdullah; K. W. Bell; M. G. Bowler; P. Bull; R. J. Cashmore; P. E.L. Clarke; R. Devenish; P. Grossmann; C. M. Hawkes; S. L. Lloyd; G. L. Salmon; T. R. Wyatt; C. Youngman; G. E. Forden; J. C. Hart; J. Harvey; D. K. Hasell; J. Proudfoot; D. H. Saxon; F. Barreiro; M. Dittmar; M. Holder; G. Kreutz; B. Neumann; E. Duchovni; U. Karshon; G. Mikenberg; R. Mir; D. Revel; E. Ronat; A. Shapira; G. Yekutieli; G. Baranko; T. Barklow; A. Caldwell; M. Cherney; J. M. Izen; M. Mermikides; G. Rudolph; D. Strom; M. Takashima; H. Venkataramania; E. Wicklund; Sau Lan Wu; G. Zobernig

doi:10.1016/0370-2693(84)91936-1

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Measurement of R and search for the top quark in e+e- annihilation between 39.8 and 45.2 GeV

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Measurement of R and search for the top quark in e+e- annihilation between 39.8 and 45.2 GeV

M. Althoff, W. Braunschweig, F. J. Kirschfink, K. Lübelsmeyer, H. U. Martyn, G. Peise, J. Rimkus, P. Rosskamp, H. G. Sander, D. Schmitz, …

Physics Letters B, Vol.138(5-6), pp.441-448

138

04/26/1984

DOI: https://doi.org/10.1016/0370-2693(84)91936-1

Abstract

Nuclear and High Energy Physics

e+e- annihilation into hadrons was studied at CM energies between 39.8 and 45.2 GeV and a search was made for new heavy quarks. No evidence was found for the existence of a narrow state excluding the possible existence of the lowest vector toponium state in this mass range. A search for continuum production of heavy quarks led to lower mass limits for new quarks of 22.0 GeV (eQ = 2 3) and 21.0 GeV (eQ = 1 3). Quarks are found to be pointlike, the corresponding mass parameter being larger than 288 GeV. A fit of the QCD and the electroweak contributions to R=σtot/σμμ yielded sin2θW = 0.30-0.07 +0.23.

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Title: Measurement of R and search for the top quark in e+e- annihilation between 39.8 and 45.2 GeV
Creators: M. Althoff (Author) - RWTH Aachen University
W. Braunschweig (Author) - RWTH Aachen University
F. J. Kirschfink (Author) - RWTH Aachen University
K. Lübelsmeyer (Author) - RWTH Aachen University
H. U. Martyn (Author) - RWTH Aachen University
G. Peise (Author) - RWTH Aachen University
J. Rimkus (Author) - RWTH Aachen University
P. Rosskamp (Author) - RWTH Aachen University
H. G. Sander (Author) - RWTH Aachen University
D. Schmitz (Author) - RWTH Aachen University
H. Siebke (Author) - RWTH Aachen University
W. Wallraff (Author) - RWTH Aachen University
H. M. Fischer (Author) - University of Bonn
H. Hartmann (Author) - University of Bonn
W. Hillen (Author) - University of Bonn
A. Jocksch (Author) - University of Bonn
G. Knop (Author) - University of Bonn
L. Köpke (Author) - University of Bonn
H. Kolanoski (Author) - University of Bonn
H. Kück (Author) - University of Bonn
V. Mertens (Author) - University of Bonn
R. Wedemeyer (Author) - University of Bonn
M. Wollstadt (Author) - University of Bonn
Y. Eisenberg (Author) - German Electron Synchrotron
K. Gather (Author) - German Electron Synchrotron
H. Hultschig (Author) - German Electron Synchrotron
P. Joos (Author) - German Electron Synchrotron
U. Kötz (Author) - German Electron Synchrotron
H. Kowalski (Author) - German Electron Synchrotron
A. Ladage (Author) - German Electron Synchrotron
B. Löhr (Author) - German Electron Synchrotron
D. Lüke (Author) - German Electron Synchrotron
P. Mättig (Author) - German Electron Synchrotron
D. Notz (Author) - German Electron Synchrotron
R. J. Nowak (Author) - German Electron Synchrotron
J. Pyrlik (Author) - German Electron Synchrotron
M. Rushton (Author) - German Electron Synchrotron
W. Schütte (Author) - German Electron Synchrotron
D. Trines (Author) - German Electron Synchrotron
G. Wolf (Author) - German Electron Synchrotron
Ch Xiao (Author) - German Electron Synchrotron
R. Fohrmann (Author) - University of Hamburg
E. Hilger (Author) - University of Hamburg
T. Kracht (Author) - University of Hamburg
H. L. Krasemann (Author) - University of Hamburg
P. Leu (Author) - University of Hamburg
E. Lohrmann (Author) - University of Hamburg
D. Pandoulas (Author) - University of Hamburg
G. Poelz (Author) - University of Hamburg
K. U. Pösnecker (Author) - University of Hamburg
B. H. Wiik (Author) - University of Hamburg
R. Beuselinck (Author) - Imperial College London
D. M. Binnie (Author) - Imperial College London
A. J. Campbell (Author) - Imperial College London
P. J. Dornan (Author) - Imperial College London
B. Foster (Author) - Imperial College London
D. A. Garbutt (Author) - Imperial College London
C. Jenkins (Author) - Imperial College London
T. D. Jones (Author) - Imperial College London
W. G. Jones (Author) - Imperial College London
J. McCardle (Author) - Imperial College London
J. K. Sedgbeer (Author) - Imperial College London
J. Thomas (Author) - Imperial College London
W. A.T. Wan Abdullah (Author) - Imperial College London
K. W. Bell (Author) - University of Oxford
M. G. Bowler (Author) - University of Oxford
P. Bull (Author) - University of Oxford
R. J. Cashmore (Author) - University of Oxford
P. E.L. Clarke (Author) - University of Oxford
R. Devenish (Author) - University of Oxford
P. Grossmann (Author) - University of Oxford
C. M. Hawkes (Author) - University of Oxford
S. L. Lloyd (Author) - University of Oxford
G. L. Salmon (Author) - University of Oxford
T. R. Wyatt (Author) - University of Oxford
C. Youngman (Author) - University of Oxford
G. E. Forden (Author) - Rutherford Appleton Laboratory
J. C. Hart (Author) - Rutherford Appleton Laboratory
J. Harvey (Author) - Rutherford Appleton Laboratory
D. K. Hasell (Author) - Rutherford Appleton Laboratory
J. Proudfoot (Author) - Rutherford Appleton Laboratory
D. H. Saxon (Author) - Rutherford Appleton Laboratory
F. Barreiro (Author) - University of Siegen
M. Dittmar (Author) - University of Siegen
M. Holder (Author) - University of Siegen
G. Kreutz (Author) - University of Siegen
B. Neumann (Author) - University of Siegen
E. Duchovni (Author) - Weizmann Institute of Science
U. Karshon (Author) - Weizmann Institute of Science
G. Mikenberg (Author) - Weizmann Institute of Science
R. Mir (Author) - Weizmann Institute of Science
D. Revel (Author) - Weizmann Institute of Science
E. Ronat (Author) - Weizmann Institute of Science
A. Shapira (Author) - Weizmann Institute of Science
G. Yekutieli (Author) - Weizmann Institute of Science
G. Baranko (Author) - University of Wisconsin-Madison
T. Barklow (Author) - University of Wisconsin-Madison
A. Caldwell (Author) - University of Wisconsin-Madison
M. Cherney (Author) - University of Wisconsin-Madison
J. M. Izen (Author) - University of Wisconsin-Madison
M. Mermikides (Author) - University of Wisconsin-Madison
G. Rudolph (Author) - University of Wisconsin-Madison
D. Strom (Author) - University of Wisconsin-Madison
M. Takashima (Author) - University of Wisconsin-Madison
H. Venkataramania (Author) - University of Wisconsin-Madison
E. Wicklund (Author) - University of Wisconsin-Madison
Sau Lan Wu (Author) - University of Wisconsin-Madison
G. Zobernig (Author) - University of Wisconsin-Madison
Additional links: Wang, P.P.; Dai, J.; Tyan, J.C.-Y.; Caulfield, J.H.; Chen, S.H.; Cheng, H.D.; Duro, R.; Caufield, J.H.; Chen, S.H.; Cheng, H.D.; Duro, R.; Honavar, V.
Publication Details: Physics Letters B, Vol.138(5-6), pp.441-448
Series: 138
Number of pages: 8
Identifiers: 991005929539002656
Academic Unit: Creighton University
Language: English
Resource Type: Journal article

Measurement of R and search for the top quark in e+e- annihilation between 39.8 and 45.2 GeV

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