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Precision measurement of electroweak parameters from the scattering of muon-neutrinos on electrons

par Vilain, Pierre ;Wilquet, Gaston ; [et al.]
Référence Physics letters. Section B, 355, page (246-252)
Publication Publié, 1994

Article révisé par les pairs

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Résumé :

We report final results on electroweak parameters from muon-neutrino electron scattering observed in the CHARM II detector from 1987 till 1991. In total 2677±82 and 2752±88 neutrino-electron scattering events have been detected in the ν and ν-beam, respectively. From the ration of differential cross sections we obtain for the electroweak mixing angle sin2 Θ = 0.2324±0.0083. From the absolute neutrino-electron scattering event rate we determined the effective vector and axial-vector neutral current coupling constants to be gVve = -0.035±0.017 and gAve = -0.503±0.017. © 1994.