Measurement of k(T) splitting scales in W -> l nu events at root s=7 TeV with the ATLAS detector

	Measurement of k(T) splitting scales in W -> l nu events at root s=7 TeV with the ATLAS detector
	ATLAS collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2013
卷号	73 期号:5
关键词	DEEP-INELASTIC SCATTERING HADRON-COLLISIONS CROSS-SECTIONS PP COLLISIONS JET HERA ALPHA(S) ALGORITHMS ENERGIES RATES
通讯作者	Aad, G (reprint author), Univ Freiburg, Hugstetter Str 55, D-79106 Freiburg, Germany.
英文摘要	A measurement of splitting scales, as defined by the kT clustering algorithm, is presented for final states containing a W boson produced in proton-proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an integrated luminosity of 36 pb(-1) which was collected using the ATLAS detector at the CERN Large Hadron Collider. Cluster splitting scales are measured in events containing W bosons decaying to electrons or muons. The measurement comprises the four hardest splitting scales in a k(T) cluster sequence of the hadronic activity accompanying the W boson, and ratios of these splitting scales. Backgrounds such as multi-jet and top-quark-pair production are subtracted and the results are corrected for detector effects. Predictions from various Monte Carlo event generators at particle level are compared to the data. Overall, reasonable agreement is found with all generators, but larger deviations between the predictions and the data are evident in the soft regions of the splitting scales.
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:000319518900019
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213537]
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	ATLAS collaboration. Measurement of k(T) splitting scales in W -> l nu events at root s=7 TeV with the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2013,73(5).
APA	ATLAS collaboration.(2013).Measurement of k(T) splitting scales in W -> l nu events at root s=7 TeV with the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,73(5).
MLA	ATLAS collaboration."Measurement of k(T) splitting scales in W -> l nu events at root s=7 TeV with the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 73.5(2013).