Measurement of triple-gauge-boson couplings of the W boson at LEP

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	Measurement of triple-gauge-boson couplings of the W boson at LEP
	L3 Collaboration
刊名	PHYSICS LETTERS B
	2004
卷号	586 期号:3-4 页码:#REF!
通讯作者	Achard, P (reprint author), Univ Geneva, CH-1211 Geneva 4, Switzerland.
英文摘要	The CP-conserving triple-gauge-boson couplings, g(1)(Z), kappa(gamma), lambda(gamma), g(5)(Z), kappa(Z) and lambda(Z) are measured using hadronic and semi-leptonic W-pair events selected in 629 pb(-1) of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The results are combined with previous L3 measurements based on data collected at lower centre-of-mass energies and with the results from single-W production and from events with a single-photon and missing energy. Imposing the constraints kappa(Z) = g(1)(Z) - tan(2) thetaw(kappa(gamma) - 1) and lambda(Z) = lambda(gamma), we obtain for the C and P conserving couplings the results: g(1)(Z) = 0.966 +/- 0.033(stat) +/- 0.015(syst), kappa(gamma) = 1.013 +/- 0.066(stat) +/- 0.026(syst), lambda(gamma) = -0.021 +/- 0.035(stat) +/- 0.017(syst). Results from the analysis of fully leptonic W-pair decays are also given. All results are in agreement with the Standard Model expectations and confirm the existence of self-couplings among electroweak gauge bosons. (C) 2004 Published by Elsevier B.V.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000220942200003
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226527]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	L3 Collaboration. Measurement of triple-gauge-boson couplings of the W boson at LEP[J]. PHYSICS LETTERS B,2004,586(3-4):#REF!.
APA	L3 Collaboration.(2004).Measurement of triple-gauge-boson couplings of the W boson at LEP.PHYSICS LETTERS B,586(3-4),#REF!.
MLA	L3 Collaboration."Measurement of triple-gauge-boson couplings of the W boson at LEP".PHYSICS LETTERS B 586.3-4(2004):#REF!.