Single W Boson Production at √s = 189 GeV

Chin. Phys. Lett.

2000, Vol. 17

Issue (4): 258-260 DOI:

Original Articles

Single W Boson Production at √s = 189 GeV

YANG Hai-Jun;CHEN Guo-Ming;YANG Min;XIONG Zhao-Hua;LU Liang;LU Yu-Sheng;CHEN He-Sheng;TANG Xiao-Wei;Martin Pohl^*;JIN Bing-Nian^*

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 ^*Swiss Federal Institute of Technology, Zurich, Switzerland

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YANG Hai-Jun, CHEN Guo-Ming, YANG Min et al 2000 Chin. Phys. Lett. 17 258-260

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Abstract Single W boson production is analyzed in a data sample collected by L3 detector at Large Electron Positron Collider in 1998. The integrated luminosity is 176.4pb^-1 with center-of-mass energy at √s = 189GeV. The signal consists of large missing energy final states with a single energetic lepton or two hadronic jets. The total cross section of single W production is measured to be 0.58 ± 0.13 ± 0.04pb, in good agreement with standard nmodel prediction. From this measurement, the limits on the anomalous γWW triplegauge-boson couplings are derived at 95% confidence level: -0.48<Δκ_γ< 0.38 and -0.50 < λ_γ< 0.41 .

Keywords: 12.10.Kt 13.38.Be 13.65.+i 25.60.Dz

Published: 01 April 2000

PACS:	12.10.Kt	(Unification of couplings; mass relations)
	13.38.Be	(Decays of W bosons)
	13.65.+i
	25.60.Dz	(Interaction and reaction cross sections)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I4/0258

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	YANG Hai-Jun
	CHEN Guo-Ming
	YANG Min
	XIONG Zhao-Hua
	LU Liang
	LU Yu-Sheng
	CHEN He-Sheng
	TANG Xiao-Wei
	Martin Pohl
	JIN Bing-Nian

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