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A new determination of the electroweak mixing angle from muon-neutrino-electron scattering

par Geiregat, D;Wilquet, Gaston ; [et al.]
Référence Physics letters. Section B, 232, page (539-548)
Publication Publié, 1989

Article révisé par les pairs

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Résumé :

We are reporting on a new determination of sin2θ{symbol}w from the ratio of vμe to ve scattering cross sections. A new detector designed for this purpose was exposed tothe Wide Band Neutrino Beamof the 450 GeV (CERN SPS. An analysis of data taken in 1987 and 1988 is presented based on 762 vμe and 1017 ve events. From the ratio of σ(vμe) to σ(vμe) we determined sin2θ{symbol}w=0.233±0.012 (stat) ± 0.008 (syst) without radiative correction. With radiative correction for mt=mH=100 GeV we find sin2θ{symbol}w=0.232±0.012(stat) ±0.008(syst). © 1989.