Measurement of the Z-boson mass using e+e− -&gt; Zγ events at centre-of-mass energies above the Z pole

L3 Collaboration

doi:10.1016/j.physletb.2004.01.074

Scientific article

Open access

English

Measurement of the Z-boson mass using e⁺e⁻ -> Zγ events at centre-of-mass energies above the Z pole

ContributorsL3 Collaboration

CollaboratorsAchard, Pablo; Bourquin, Maurice; Braccini, Saverio; Chamizo Llatas, Maria; Deglon, Patrick; Delmeire, Evelyne; Echenard, Bertrand; Extermann, Pierre; Field, John; Kienzle, Maria-Novella; Malgeri, Luca; Natale, Sonia; Pohl, Martin; Straessner, Arno

Published inPhysics letters. B, vol. 585, no. 1-2, p. 42-52

Publication date2004

Abstract

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.

Affiliation

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

L3 Collaboration. Measurement of the Z-boson mass using e+e− -> Zγ events at centre-of-mass energies above the Z pole. In: Physics letters. B, 2004, vol. 585, n° 1-2, p. 42–52. doi: 10.1016/j.physletb.2004.01.074

Article (Published version)

Identifiers

PID : unige:42588
DOI : 10.1016/j.physletb.2004.01.074

Commercial URLhttp://www.sciencedirect.com/science/article/pii/S0370269304002400

ISSN of the journal0370-2693

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Measurement of the Z-boson mass using e+e− -> Zγ events at centre-of-mass energies above the Z pole

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Measurement of the Z-boson mass using e⁺e⁻ -> Zγ events at centre-of-mass energies above the Z pole