Measurement of the Z-boson using e+e- -> Z gamma events at centre-of-mass energies above the Z pole
arXiv:hep-ex/0402001 · doi:10.1016/j.physletb.2004.01.074
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 GeV 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 beam energy, found to be 87 +- 34 (stat.) \pm 34 (syst.) MeV lower than the nominal value.
References in corpus (1)
Cited by in corpus (9)
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- Measurement of the Mass and the Width of the W Boson at LEP
- Determination of the LEP Beam Energy using Radiative Fermion-pair Events
- A Determination of the Centre-of-Mass Energy at LEP2 using Radiative 2-fermion Events
- Physics of W bosons at LEP
- Measuring the Beam Energy with Radiative Return Events
- Z-boson production with two unobserved, back-to-back, hard photons at LEP