Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV

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

	Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2013
期号	4
关键词	CARLO GENERATOR CASCADE PERTURBATION-THEORY QCD COHERENCE PHYSICS TEVATRON CCFM LHC
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	The underlying event activity in proton-proton collisions at forward pseudorapidity (-6.6 < eta < -5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy density, dE/d(eta), for events with a charged-particle jet produced at central pseudorapidity (vertical bar eta(jet)vertical bar < 2) to the forward energy density for inclusive events. This forward energy density ratio is measured as a function of the central jet transverse momentum, p(T), at three different pp centre-of-mass energies (root s = 0.9, 2.76, and 7 TeV). In addition, the root s evolution of the forward energy density is studied in inclusive events and in events with a central jet. The results are compared to those of Monte Carlo event generators for pp collisions and are discussed in terms of the underlying event. Whereas the dependence of the forward energy density ratio on jet p(T), at each root s separately can be well reproduced by some models, all models fail to simultaneously describe the increase of the forward energy density with root s in both inclusive events and in events with a central jet.
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:000321208400072
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213557]
专题	高能物理研究所_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 GB/T 7714	CMS Collaboration. Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(4).
APA	CMS Collaboration.(2013).Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(4).
MLA	CMS Collaboration."Study of the underlying event at forward rapidity in pp collisions at root s=0.9, 2.76, and 7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .4(2013).