Reassessment of the NuTeV determination of the Weinberg angle

Details Reassessment of the NuTeV determination of the Weinberg angle Reassessment of the NuTeV determination of the Weinberg angle

2009-08-24

arxiv.org/abs/0908.3198v3

Physics

Nuclear Physics

Nuclear Theory

4 pages, one figure

Scientific paper

In light of the recent discovery of the importance of the isovector EMC effect for the interpretation of the NuTeV determination of sin^2 theta_W, it seems timely to reassess the central value and the errors on this fundamental Standard Model parameter derived from the NuTeV data. We also include earlier work on charge symmetry violation and the recent limits on a possible asymmetry between s and \bar{s} quarks. With these corrections we find a revised NuTeV result of sin^2 theta_W = 0.2232 \pm 0.0013(stat) \pm 0.0024(syst), which is in excellent agreement with the running of sin^2 theta_W predicted by the Standard Model.

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