Neutral-current four-fermion production in e(+)e(-) interactions at LEP

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Neutral-current four-fermion production in e(+)e(-) interactions at LEP
刊名	PHYSICS LETTERS B
	2005
卷号	616 期号:3--4 页码:159-173
关键词	CARLO EVENT GENERATOR ANGLE BHABHA SCATTERING BOSON PAIR-PRODUCTION MONTE-CARLO L3 EXPERIMENT FINAL-STATES CROSS-SECTIONS Z-PEAK COLLISIONS DETECTOR
通讯作者	Achard, P (reprint author), Univ Geneva, CH-1211 Geneva, Switzerland.
英文摘要	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.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000229703600003
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212564]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	. 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.