Underlying event properties in pp collisions at root s=13 TeV

doi:10.1007/JHEP04(2020)192

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	Underlying event properties in pp collisions at root s=13 TeV
	Acharya, S ; Acosta, FT ; Adam, J ; Adamova, D ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2020
期号	4 页码:-
关键词	PROTON-PROTON COLLISIONS PB-PB COLLISIONS TRANSVERSE-MOMENTUM CHARGED-PARTICLES DISTRIBUTIONS
ISSN号	1029-8479
DOI	10.1007/JHEP04(2020)192
文献子类	期刊论文
英文摘要	This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at midrapidity (\|eta\| < 0.8) in pp collisions at s = 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum (pTleading) in the event. Charged-particle number-densities and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of pTleading with three different p(T) thresholds for the associated particles, pTtrack > 0.15, 0.5, and 1.0 GeV/c. The charged-particle density in the Transverse region rises steeply for low values of pTleading and reaches a plateau. The results confirm the trend that the charged-particle density in the Transverse region shows a stronger increase with s than the inclusive charged-particle density at midrapidity. The UE activity is increased by approximately 20% when going from 7 TeV to 13 TeV pp collisions. The plateau in the Transverse region (5
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33246]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Nantes, IMT Atlantique, SUBATECH, CNRS,IN2P3, Nantes, France 2.Sezione Ist Nazl Fis Nucl, Turin, Italy 3.Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia 4.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 5.Bose Inst, Dept Phys, Kolkata, India 6.Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata, India 7.Budker Inst Nucl Phys, Novosibirsk, Russia 8.Calif Polytechn State Univ, San Luis Obispo, CA USA 9.Cent China Normal Univ, Wuhan, Hubei, Peoples R China 10.Ctr Calcul IN2P3, Villeurbanne, France
推荐引用方式 GB/T 7714	Acharya, S,Acosta, FT,Adam, J,et al. Underlying event properties in pp collisions at root s=13 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2020(4):-.
APA	Acharya, S.,Acosta, FT.,Adam, J.,Adamova, D.,Adler, A.,...&Zmeskal, J.(2020).Underlying event properties in pp collisions at root s=13 TeV.JOURNAL OF HIGH ENERGY PHYSICS(4),-.
MLA	Acharya, S,et al."Underlying event properties in pp collisions at root s=13 TeV".JOURNAL OF HIGH ENERGY PHYSICS .4(2020):-.