Abstract
The first year of LEP running was devoted to the study of Z production and decay on the resonance. Results of the four collaborations, based on ∼400′000 decays, show that the number of fermion families is three, give a precise measure of the Z mass, furnish tests of the electroweak theory at a new level sensitivity, and constrain the top mass.
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References
CERN-EP/90-25 ALEPH: “A Detector for Electron-Positron Annihilation at LEP”, 22 February 1990; to be published in Nucl. Instr. and Methods.
Physics at LEP, G. Altarelli, R. Kleiss and C. Verzegnassi editors, CERN 89-08.
D. Decamp et al., “ALEPH Collaboration. Determination of the Number of Light Neutrino Species”, Phys. Lett. 231B (1989) 519. 4.
D. Decamp et al., “ALEPH Collaboration. A Precise Determination of the Number of Families with Light Neutrinos and of the Z Boson Partial Widths,”. Phys. Lett. 235B (1990) 399.
S. D. Decamp et al., “ALEPH Collaboration. Measurement of Electroweak Parameters from Z Decavs into Fermion Pairs. To be published in Zeit, fur Physik C.
B. Adeva et al., L3 Collaboration. “A Determination of the Properties of the Neutral Intermediate Vector Boson Z, Phys. Lett. 231B (1989) 509.
M.Z. Akrawy et al, OPAL Collaboration. “Measurement of the Z 0 Mass and Width with the OPAL Detector at LEP”, Phys. Lett. 231B (1989) 530.
P. Abreu et al., DELPHI Collaboration. “Measurement of the Mass Width of the Z 0 from Multihadronic Final States Produced in e + e − Annihilations ”, Phys. Lett. 231B (1989) 539.
B. Adeva et al., L3 Collaboration. “Measurement of Z 0 Decays to Hadrons, and a Precise Determination of the Number of Neutrino Species”, Phys. Lett. 237B (1990) 136.
M.Z. Akrawy et al., OPAL Collaboration. “A Combined Analy.si.s of the Hadronic and Leptonic Decavs of the Z”, Phys. Lett. 240B (1990) 497.
P. Abreu et al, DELPHI Collaboration. A Precise Measurement of the Z Resonance Parameters Through its Hadronic Decays”, Phys. Lett. 241B (1990) 435.
B. Adeva et al., L3 Collaboration. “A Precision Measurement of the Number of Neutrino Species”, 14 July 1990; to be published in Phys. Lett.B.
Reported at the Conference on High Energy Physics, Singapore, August 1990.
D. Decamp et al., ALEPH Collaboration. “Determination of the Leptonic Branching Ratios of the Z”, Phys. Lett. 234B (1990) 399.
P. Abreu et al, DELPHI Collaboration. “Study of the Leptonic Decavs of the Z 0 Boson”, Phys. Lett. 241B (1990) 425.
M.Z. Akrawy et al., OPAL Collaboration. “Measurement of the Decay of the Z 0 into Lepton Pairs”, Phys. Lett. 235B(1990) 379.
B. Adeva et al., L3 Collaboration. “ Measurement of g A and g V , the Neutral Current Coupling Constants to Leptons ”, Phys. Lett. 236B (1990) 109.
B. Adeva et al., L3 Collaboration. “A Measurement of the Z 0 Leptonic Partial Widths and the Forward-Backward Asvmmetry”, Phys. Lett. 238B (1990)122.
M.Z. Akrawy et al., OPAL Collaboration. “Analysis of the Z 0 Couplings to Charged Leptons, 11 June 1990; to be published in Phys. Lett. B.
B. Adeva et al, L3 Collaboration. “A Determination of the Electroweak Parameters from Z0 → µ= µ−(γ).” 21 June 1990; to be published in Phys. Lett. B.
S.L. Wu, Phys. Rep. 107 (1984) 60.
J. Alitti et al., (UA2 Collaboration), Phys. Lett. B241 (1990) 150.
P. Shalbach et al., (CDF Collaboration), Proceedings of the APS Conference, Washington DC, April 1990.
H. Abramowicz et al., (CDHS Collaboration), Phys. Rev. Lett. 57 (1986) 298
A. Blondel et al., Z. Phys. C45 (1990) 361.
J.V. Allaby et al. (CHARM Collaboration), Phys. Lett. B177 (1986) 446
J.V. Allaby et al. Z. Phys. C36 (1987) 611.
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Steinberger, J. (1991). First Results at the LEP e+e- Collider. In: Zichichi, A. (eds) Physics Up to 200 TeV. The Subnuclear Series, vol 28. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3774-8_9
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DOI: https://doi.org/10.1007/978-1-4615-3774-8_9
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