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A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering

NuTeV Collaboration, G. P. Zeller, K. S. McFarland, 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

TL;DR

The NuTeV Collaboration has extracted the electroweak parameter sin(2)theta(W) from the measurement of the ratios of neutral current to charged current nu and (-)nu cross sections and presents a model independent analysis of the same data in terms of neutral-current quark couplings.

Abstract

The NuTeV collaboration has extracted sin^2theta_W from the ratios of neutral current to charged current neutrino and anti-neutrino cross-sections. Our value, sin^2theta_W(on-shell)=0.2277+/-0.0013(stat)+/-0.0009(syst), is three standard deviations above the standard model prediction. We also present a model independent analysis of the same data.

A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering

TL;DR

The NuTeV Collaboration has extracted the electroweak parameter sin(2)theta(W) from the measurement of the ratios of neutral current to charged current nu and (-)nu cross sections and presents a model independent analysis of the same data in terms of neutral-current quark couplings.

Abstract

The NuTeV collaboration has extracted sin^2theta_W from the ratios of neutral current to charged current neutrino and anti-neutrino cross-sections. Our value, sin^2theta_W(on-shell)=0.2277+/-0.0013(stat)+/-0.0009(syst), is three standard deviations above the standard model prediction. We also present a model independent analysis of the same data.

Paper Structure

This paper contains 3 sections, 8 equations, 1 figure, 1 table.

Table of Contents

  1. Method
  2. Results
  3. Acknowledgements

Figures (1)

  • Figure 1: Comparison of $\nu$ and $\overline{\nu}$ event length distributions in data and Monte Carlo (MC). The MC prediction for CC events is shown separately. Insets show data/MC ratio comparisons in the region of the length cut with bands to indicate the $1\sigma$ systematic uncertainty in this ratio.