Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 TeV

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	Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
卷号	2015 期号:9 页码:137
关键词	Hadron-Hadron Scattering Particle correlations and fluctuations
英文摘要	A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (vertical bar eta(jet) \| < 2) and with transverse momentum 1 <= p(T)(jet) < 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76TeV with the CMS experiment at the LHC. The UE activity is measured as a function of p(T)(jet) T in terms of the average multiplicity and scalar sum of transverse momenta (p(T)) of charged particles, with vertical bar eta vertical bar < 2 and p(T) > 0.5 GeV, in the azimuthal region transverse to the highest p(T) jet direction. By further dividing the transverse region into two regions of smaller and larger activity, various components of the UE activity are separated. The measurements are compared to previous results at 0.9 and 7TeV, and to predictions of several Monte Carlo event generators, providing constraints on the modelling of the UE dynamics.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000363541800002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228999]
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	CMS Collaboration. Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(9):137.
APA	CMS Collaboration.(2015).Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 TeV.JOURNAL OF HIGH ENERGY PHYSICS,2015(9),137.
MLA	CMS Collaboration."Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at s = 2.76 TeV".JOURNAL OF HIGH ENERGY PHYSICS 2015.9(2015):137.