Measurement of the W boson mass and width in e(+)e(-) collisions at LEP

	Measurement of the W boson mass and width in e(+)e(-) collisions at LEP
	ALEPH Collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2006
卷号	47 期号:2 页码:309-335
关键词	PHYSICS EVENT GENERATION PAIR PRODUCTION MONTE-CARLO NONFACTORIZABLE CORRECTIONS EINSTEIN CORRELATIONS RADIATIVE-CORRECTIONS RAPIDITY GAPS FINAL-STATES ENERGIES RECONSTRUCTION
通讯作者	Schael, S (reprint author), Rhein Westfal TH Aachen, Inst Phys, D-52056 Aachen, Germany.
英文摘要	The mass of the W boson is determined from the direct reconstruction of W decays in WW -> qqqq and WW -> lvqq events in e(+)e(-) collisions at LEP. The data sample corresponds to an integrated luminosity of 683 pb(-1) collected with the ALEPH detector at centre-of-mass energies up to 209 GeV. To minimise any effect from colour reconnection a new procedure is adopted in which low energy particles are not considered in the mass determination from the qqqq channel. The combined result from all channels is mw = 80.440 +/- 0.043(stat.) +/- 0.024(syst.) +/- 0.009(FSI) +/- 0.009 (LEP)GeV/c(2), where PSI represents the possible effects of final state interactions in the qqqq channel and LEP indicates the uncertainty in the beam energy. From two-parameter fits to the W mass and width, the W width is found to be Gamma(W) = 2.14 +/- 0.09(stat.) +/- 0.04(syst.) +/- 0.05 (FSI) +/- 0.01 (LEP)GeV.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000241559800003
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212733]
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 boson mass and width in e(+)e(-) collisions at LEP[J]. EUROPEAN PHYSICAL JOURNAL C,2006,47(2):309-335.
APA	ALEPH Collaboration.(2006).Measurement of the W boson mass and width in e(+)e(-) collisions at LEP.EUROPEAN PHYSICAL JOURNAL C,47(2),309-335.
MLA	ALEPH Collaboration."Measurement of the W boson mass and width in e(+)e(-) collisions at LEP".EUROPEAN PHYSICAL JOURNAL C 47.2(2006):309-335.