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research article
Measurement of the Z-boson mass using e+e- →Zγ events at centre-of-mass energies above the Z pole
Events from the e+e-→Zγ process with hard initial-state radiation collected with the L3 detector at centre-of-mass energies between 183 and 209 GeV are used to measure the mass of the Z boson. Decays of the Z boson into hadrons or muon pairs are considered and the Z mass is determined to be 91.272±0.032(stat)±0.033(syst) GeV, in agreement with the value measured at the Z resonance. Alternatively, assuming this measured value of the Z mass, the method determines the LEP centre-of-mass energy, found to be 175±68(stat)±68(syst) MeV lower than the nominal value. © 2004 Published by Elsevier B.V.
Type
research article
Scopus ID
2-s2.0-12144288216
Authors
Achard, P.
•
Adriani, O.
•
Aguilar-Benitez, M.
•
Alcaraz, J.
•
Alemanni, G.
•
Allaby, J.
•
Aloisio, A.
•
Alviggi, M.G.
•
Anderhub, H.
•
Andreev, V.P.
Publication date
2004
Volume
585
Issue
1-2
Start page
42
End page
52
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
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