PRECISION-MEASUREMENT OF ELECTROWEAK PARAMETERS FROM THE SCATTERING OF MUON-NEUTRINOS ON ELECTRONS


Vilain P., Wilquet G., Beyer R., Flegel W., Grote H., Mouthuy T., ...Daha Fazla

PHYSICS LETTERS B, cilt.335, no.2, ss.246-252, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 335 Konu: 2
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1016/0370-2693(94)91421-4
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayıları: ss.246-252

Özet

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 nu and nuBAR-beam, respectively. From the ratio of differential cross sections we obtain for the electroweak mixing angle sin2 THETA(nue) = 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 g(v)nue = -0.035 +/-0.017 and g(A)nue = -0.503 +/- 0.017.