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Neutral-current four-fermion production in e(+)e(-) interactions at LEP
2005
发表期刊PHYSICS LETTERS B
卷号616期号:3--4页码:159-173
通讯作者Achard, P (reprint author), Univ Geneva, CH-1211 Geneva, Switzerland.
摘要Neutral-current four-fermion production, e(+)e(-) f (f) over bar f'(f) over barf, is studied in 0.7 fb(-1) of data collected with the L3 detector at LEP at centre-of-mass energies root s = 183-209 GeV. Four final states are considered: q (q) over barv (v) over bar, q (q) over barl(+)l(-),l(+)l(-)l'(+)l'(-) and l(+)l(-)v (v) over bar, where l denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e(+)e(-) -> Z gamma* -> f (f) over barf'(f) over bar' process is studied and its total cross section at the average centre-of-mass energy (root s) = 196.6 GeV is found to be 0.29 +/- 0.05 +/- 0.03 pb, where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the q (q) over barl(+)l(-) final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found. (c) 2005 Published by Elsevier B.V.
关键词CARLO EVENT GENERATOR ANGLE BHABHA SCATTERING BOSON PAIR-PRODUCTION MONTE-CARLO L3 EXPERIMENT FINAL-STATES CROSS-SECTIONS Z-PEAK COLLISIONS DETECTOR
学科领域Physics
DOI10.1016/j.physletb.2005.04.062
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000229703600003
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212564
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
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. Neutral-current four-fermion production in e(+)e(-) interactions at LEP[J]. PHYSICS LETTERS B,2005,616(3--4):159-173.
APA (2005).Neutral-current four-fermion production in e(+)e(-) interactions at LEP.PHYSICS LETTERS B,616(3--4),159-173.
MLA "Neutral-current four-fermion production in e(+)e(-) interactions at LEP".PHYSICS LETTERS B 616.3--4(2005):159-173.
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