Phys. Rev. D 67, 111901(R) (2003) [3 pages]

Charge symmetry violation corrections to determination of the Weinberg angle in neutrino reactions

Abstract

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J. T. Londergan^*
Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405, USA

A. W. Thomas^†
Department of Physics and Mathematical Physics, and Special Research Center for the Subatomic Structure of Matter, University of Adelaide, Adelaide 5005, Australia

Received 6 March 2003; published 23 June 2003

We show that the correction to the Paschos-Wolfenstein relation associated with charge symmetry violation in the valence quark distributions is essentially model independent. It is proportional to a ratio of quark momenta that is independent of Q². This result provides a natural explanation of the surprisingly good agreement found between our earlier estimates within several different models. When applied to the recent NuTeV measurement, this effect significantly reduces the discrepancy with other determinations of the Weinberg angle.

URL:

http://link.aps.org/doi/10.1103/PhysRevD.67.111901

DOI:

10.1103/PhysRevD.67.111901

PACS:

11.30.Hv, 12.15.Mm, 12.38.Qk, 13.15.+g

^*Electronic address: tlonderg@indiana.edu

^†Electronic address: athomas@physics.adelaide.edu.au

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Phys. Rev. D 67, 111901(R) (2003) [3 pages]

Charge symmetry violation corrections to determination of the Weinberg angle in neutrino reactions