期刊
PHYSICS LETTERS B
卷 642, 期 5-6, 页码 563-566出版社
ELSEVIER
DOI: 10.1016/j.physletb.2006.07.035
关键词
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We present the complete bosonic contributions to the effective weak mixing angle, sin(2)theta(lept)(eff), at the two-loop level in the electroweak interactions. We find their size to be about three times smaller than inferred from simple estimates from lower orders. In particular, for a Higgs boson mass, M-H, of 100 GeV they amount to 4 x 10(-6), and drop down by about an order of magnitude for M-H = 200 GeV. We estimate the intrinsic error of the theory prediction of sin(2)theta(lept)(eff) (c) 2006 Elsevier B.V. All rights reserved.
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