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<Δκγ< 0.38 and -0.50 < λγ< 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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