Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2002-10-04
eConf C020620:SABT01,2002
Physics
High Energy Physics
High Energy Physics - Experiment
12 pages, 1 figure, submitted to the proceedings of the XXII Physics in Collision Conference
Scientific paper
The NuTeV collaboration has performed precision measurements of the ratio of neutral current to charged current cross-sections in high rate, high energy neutrino and anti-neutrino beams on a dense, primarily steel, target. The separate neutrino and anti-neutrino beams, high statistics, and improved control of other experimental systematics, allow the determination of electroweak parameters with significantly greater precision than past neutrino-nucleon scattering experiments. Our null hypothesis test of the standard model prediction measures sin2thetaW=0.2277+/-0.0013(stat)+/-0.0009(syst), a value which is 3 sigma above the prediction. We discuss possible explanations for and implications of this discrepancy.
Adams Tarn
Alton Andrew
Avvakumov S.
Bernstein R. H.
Bodek Arie
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