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A precision measurement of electroweak parameters in neutrino-nucleon scattering

  • CCFR/NuTeV Collaboration
  • K.S. McFarland et al.
Experimental physics

Abstract.

The CCFR collaboration reports a precise measurement of electroweak parameters derived from the ratio of neutral-current to charged-current cross-sections in neutrino-nucleon scattering at the Fermilab Tevatron. We determine \(\sin^2\theta_W^{\rm \scriptstyle (on-shell)}=0.2236\pm0.0028{\rm\textstyle (expt.)}\pm0.0030{\rm\textstyle (model)}\) for \(M_{\rm \scriptstyle top}=175\) GeV, \(M_{\rm \scriptstyle Higgs}=150\) GeV. This is equivalent to \(M_W=80.35\pm0.21\) GeV. The good agreement of this measurement with Standard Model expectations implies the exclusion of additional \(\nu\nu qq\) contact interactions at 95% confidence at a mass scale of 1-8 TeV, depending on the form of the contact interaction.

Keywords

Mass Scale Precise Measurement Precision Measurement Contact Interaction Model Expectation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • CCFR/NuTeV Collaboration
  • K.S. McFarland et al.
    • 1
  1. 1. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA US

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