期刊
PHYSICS LETTERS B
卷 558, 期 3-4, 页码 132-140出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(03)00267-3
关键词
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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(2)theta(W) 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(2)theta(W). (C) 2003 Published by Elsevier Science B.V.
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