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.; Overas, H.; Panman, J.; Rozanov, A.; Winter, K.; Zacek, G.; Zacek, V.; Busser, F. W.; Foos, C.; Gerland, L.; Layda, T.; Niebergall, F.; Radel, G.; Stahelin, P.; Voss, T.; Favart, D.; Gregoire, G.; Knoops, E.; Lemaitre, V.; Gorbunov, P.; Grigoriev, E.; Khovansky, V.; Maslennikov, A.; Lippich, W.; Nathaniel, A.; Staude, A.; Vogt, J.; Cocco, A. G.; Ereditato, A.; Fiorillo, Giuliana; Marchettistasi, F.; Palladino, Vittorio; Strolin, P.; Capone, A.; Depedis, D.; Dore, U.; Frenkelrambaldi, A.; Loverre, P. F.; Macina, D.; Piredda, G.; Santacesaria, R.; Dicapua, E.; Ricciardi, S.; Saitta, B.; Akkus, B.; Arik, E.; Serinzeyrek, M.; Sever, R.; Tolun, P.; Hiller, K.; Nahnhauer, R.; Roloff, H. E.

doi:10.1016/0370-2693(94)91421-4

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.

Precision-measurement of Electroweak Parameters From the Scattering of Muon-neutrinos On Electrons / P., V., G., W., R., B., W., F., H., G., T., M., H., O., J., P., A., R., K., W., G., Z., V., Z., F. W., B., C., F., L., G., T., L., F., N., G., R., P., S., T., V., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 335:(1994), pp. 246-252. [10.1016/0370-2693(94)91421-4]