Searches for scalar top and scalar bottom quarks at LEP2

	Searches for scalar top and scalar bottom quarks at LEP2
	ALEPH Collaboration
刊名	PHYSICS LETTERS B
	1997
卷号	413 期号:3-4 页码:#REF!
通讯作者	Barate, R (reprint author), CNRS, Phys Particules Lab, IN2P3, F-74019 Annecy Le Vieux, France.
英文摘要	Searches for scalar top and bottom quarks have been performed with data collected by the ALEPH detector at LEP. The data sample consists of 21.7 pb(-1) taken at root s = 161, 170, and 172 GeV and 5.7 pb(-1) taken at root s = 130 and 136 GeV. No evidence for scalar top quarks or scalar bottom quarks was found in the channels (t) over tilde --> c chi, (t) over tilde --> bl<(nu)over tilde>, and (b) over tilde --> b chi. For the channel (t) over tilde --> c chi a limit of 67 GeV/c(2) has been set on the scalar top quark mass, independent of the mixing angle between the supersymmetric partners of the left and right-handed states of the top quark. This limit assumes a mass difference between the (t) over tilde and the chi of at least 10 GeV/c(2). For the channel (t) over tilde --> bl<(nu)over tilde> the mixing-angle independent scalar top limit is 70 GeV/c(2), assuming a mass difference between the (t) over tilde and the <(nu)over tilde> of at least 10 GeV/c(2). For the channel (b) over tilde --> b chi, a limit of 73 GeV/c(2) has been set on the mass of the supersymmetric partner of the left-handed state of the bottom quark. This limit is valid if the mass difference between the (b) over tilde and the chi is at least 10 GeV/c(2). (C) 1997 Elsevier Science B.V.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000071086700029
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/227643]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	ALEPH Collaboration. Searches for scalar top and scalar bottom quarks at LEP2[J]. PHYSICS LETTERS B,1997,413(3-4):#REF!.
APA	ALEPH Collaboration.(1997).Searches for scalar top and scalar bottom quarks at LEP2.PHYSICS LETTERS B,413(3-4),#REF!.
MLA	ALEPH Collaboration."Searches for scalar top and scalar bottom quarks at LEP2".PHYSICS LETTERS B 413.3-4(1997):#REF!.