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Events from the e(+)e(-) --> Zgamma 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. (C) 2004 Published by Elsevier B.V.

Measurement of the Z-boson mass using e(+)e(-)-> Z gamma events at centre-of-mass energies above the Z pole / P., A., O., A., M., A.B., J., A., G., A., J., A., A., A., M. G., A., H., A., V. P., A., F., A., A., A., T., A., T., A., Bagnaia, P., A., B., G., B., L., B., S. V., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 585:(2004), pp. 42-52. [10.1016/j.physletb.2004.01.074]

Measurement of the Z-boson mass using e(+)e(-)-> Z gamma events at centre-of-mass energies above the Z pole

BAGNAIA, Paolo;BORGIA, BRUNO;DIONISI, Carlo;GENTILE, Simonetta;GIAGU, Stefano;LONGO, Egidio;LUCI, Claudio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;
2004

Abstract

Events from the e(+)e(-) --> Zgamma 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. (C) 2004 Published by Elsevier B.V.
2004
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the Z-boson mass using e(+)e(-)-> Z gamma events at centre-of-mass energies above the Z pole / P., A., O., A., M., A.B., J., A., G., A., J., A., A., A., M. G., A., H., A., V. P., A., F., A., A., A., T., A., T., A., Bagnaia, P., A., B., G., B., L., B., S. V., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 585:(2004), pp. 42-52. [10.1016/j.physletb.2004.01.074]
01a Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/361904
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