Charge symmetry violating contributions to neutrino reactions
Date
2003
Authors
Londergan, J.
Thomas, A.
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Journal article
Citation
Physics Letters B: Nuclear Physics and Particle Physics, 2003; 558(3-4):132-140
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Abstract
The NuTeV group has measured charged and neutral current reactions for neutrinos on iron targets. Ratios of these cross sections provide an independent measurement of the Weinberg angle. The NuTeV value for sin<sup>2</sup> θ<inf>W</inf> is three standard deviations larger than the value measured in other electroweak processes. By reviewing theoretical estimates of parton charge symmetry violation (CSV), we study CSV contributions to the NuTeV measurement. We conclude that charge symmetry violating effects should remove roughly 30% of the discrepancy between the NuTeV result and other determinations of sin<sup>2</sup> θ<inf>W</inf>. © 2003 Published by Elsevier Science B.V.