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Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV

文献类型:期刊论文

作者ALEPH Collaboration
刊名PHYSICS LETTERS B
出版日期1998
卷号422期号:1--4页码:384-398
关键词MONTE-CARLO PROGRAM PAIR PRODUCTION RADIATIVE-CORRECTIONS EVENT GENERATION QED CORRECTIONS ENERGIES LEP2/NLC PHYSICS LEP
通讯作者Barate, R (reprint author), CNRS, IN2P3, Phys Particules Lab, LAPP, F-74019 Annecy Le Vieux, France.
英文摘要The mass of the W boson is obtained from reconstructed invariant mass distributions in W-pair events. The sample of W pairs is selected from 10.65 pb(-1) collected with the ALEPH detector at a mean centre-of-mass energy of 172.09 GeV. The invariant mass distribution of simulated events are fitted to the experimental; distributions and the following W masses are obtained: WW --> , m(W) = 81.30 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> l nu (l=e,mu), m(W) = 80.54 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> tau nu, m(W) = 79.56 +/- 1.08(stat.) +/- 0.23(syst.) GeV/c(2). The statistical errors are the expected errors for Monte Carlo samples of the same integrated luminosity as the data. The combination of these three measurements gives: m(W) = 80.80 +/- 0.32(stat.) +/- 0.11(syst.) +/- 0.03(LEP energy) GeV/c(2). (C) 1998 Elsevier Science B.V.
学科主题Physics
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000073344400050
公开日期2016-02-25
源URL[http://ir.ihep.ac.cn/handle/311005/211910]  
专题高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
ALEPH Collaboration. Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV[J]. PHYSICS LETTERS B,1998,422(1--4):384-398.
APA ALEPH Collaboration.(1998).Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV.PHYSICS LETTERS B,422(1--4),384-398.
MLA ALEPH Collaboration."Measurement of the W mass by direct reconstruction in e(+)e(-) collisions at 172 GeV".PHYSICS LETTERS B 422.1--4(1998):384-398.

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来源:高能物理研究所

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