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29 March 2024
 
  » arxiv » hep-ex/0205080

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A Departure from Prediction: Electroweak Physics at Nutev
K. S. McFarland ; G. P. Zeller ; T. Adams ; A. Alton ; S. Avvakumov ; L. deBarbaro ; P. deBarbaro ; R. H. Bernstein ; A. Bodek ; T. Bolton ; J. Brau ; D. Buchholz ; H. Budd ; L. Bugel ; J. Conrad ; R. B. Drucker ; B. T. Fleming ; R. Frey ; J. A. Formaggio ; J. Goldman ; M. Goncharov ; D. A. Harris ; R. A. Johnson ; J. H. Kim ; S. Koutsoliotas ; M. J. Lamm ; W. Marsh ; D. Mason ; J. McDonald ; C. McNulty ; D. Naples ; P. Nienaber ; A. Romosan ; W. K. Sakumoto ; H. Schellman ; M. H. Shaevitz ; P. Spentzouris ; E. G. Stern ; N. Suwonjandee ; M. Tzanov ; M. Vakili ; A. Vaitaitis ; U. K. Yang ; J. Yu ; E. D. Zimmerman ;
Date 23 May 2002
Subject hep-ex
AbstractThe NuTeV experiment 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 3.0 standard deviations above the prediction. We discuss possible explanations for and implications of this discrepancy.
Source arXiv, hep-ex/0205080
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