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

Date
1994
Author
WINTER, K
EREDITATO, A
FIORILLO, G
MARCHETTISTASI, F
PALLADINO, V
STROLIN, P
CAPONE, A
DEPEDIS, D
DORE, U
FRENKELRAMBALDI, A
LOVERRE, PF
MACINA, D
PIREDDA, G
SANTACESARIA, R
DICAPUA, E
RICCIARDI, S
SAITTA, B
ARIK, E
SERINZEYREK, M
SEVER, R
TOLUN, P
HILLER, K
NAHNHAUER, R
ROLOFF, HE
Vilain, P.
Wilquet, G.
Beyer, R.
Flegel, W.
Grote, H.
Mouthuy, T.
Panman, J.
Zacek, V.
AKKUS, B
GERLAND, L
LAYDA, T
NIEBERGALL, F
RADEL, G
STAHELIN, P
VOSS, T
FAVART, D
GREGOIRE, G
KNOOPS, E
LEMAITRE, V
GORBUNOV, P
GRIGORIEV, E
OVERAS, H
ROZANOV, A
ZACEK, V
BUSSER, FW
FOOS, C
KHOVANSKY, V
MASLENNIKOV, A
LIPPICH, W
NATHANIEL, A
STAUDE, A
VOGT, J
COCCO, AG
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Abstract
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.
URI
http://hdl.handle.net/20.500.12627/149947
https://doi.org/10.1016/0370-2693(94)91421-4
http://www.sciencedirect.com/science/article/pii/0370269394914214
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