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.

P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, et al. (2004). Measurement of the Z-boson mass using e(+)e(-) to Z gamma events at centre-of-mass energies above the Z pole. PHYSICS LETTERS. SECTION B, 585, 42-52 [10.1016/j.physletb.2004.01.074].

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

BASILE, MAURIZIO;CIFARELLI, LUISA;ZICHICHI, ANTONINO;
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.
2004
P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, et al. (2004). Measurement of the Z-boson mass using e(+)e(-) to Z gamma events at centre-of-mass energies above the Z pole. PHYSICS LETTERS. SECTION B, 585, 42-52 [10.1016/j.physletb.2004.01.074].
P. ACHARD; O. ADRIANI; M. AGUILAR-BENITEZ; J. ALCARAZ; G. ALEMANNI; J. ALLABY; A. ALOISIO; M.G. ALVIGGI; H. ANDERHUB; V.P. ANDREEV; F. ANSELMO; A. ARE...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/111165
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 8
social impact