A Departure from Prediction: Electroweak Physics at Nutev
Abstract
The 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.
Cite
@article{arxiv.hep-ex/0205080,
title = {A Departure from Prediction: Electroweak Physics at Nutev},
author = {K. S. McFarland and G. P. Zeller and T. Adams and A. Alton and S. Avvakumov and L. deBarbaro and P. deBarbaro and R. H. Bernstein and A. Bodek and T. Bolton and J. Brau and D. Buchholz and H. Budd and L. Bugel and J. Conrad and R. B. Drucker and B. T. Fleming and R. Frey and J. A. Formaggio and J. Goldman and M. Goncharov and D. A. Harris and R. A. Johnson and J. H. Kim and S. Koutsoliotas and M. J. Lamm and W. Marsh and D. Mason and J. McDonald and C. McNulty and D. Naples and P. Nienaber and A. Romosan and W. K. Sakumoto and H. Schellman and M. H. Shaevitz and P. Spentzouris and E. G. Stern and N. Suwonjandee and M. Tzanov and M. Vakili and A. Vaitaitis and U. K. Yang and J. Yu and E. D. Zimmerman},
journal= {arXiv preprint arXiv:hep-ex/0205080},
year = {2007}
}
Comments
submitted to the proceedings of Rencontres de la Vallee d'Aoste, March 2002, 16 pages, 5 figures; v2. fix Eqn 9 and delta-N definition