Underlying event measurements in p plus p collisions at root s=200 GeV at RHIC

doi:10.1103/PhysRevD.101.052004

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	Underlying event measurements in p plus p collisions at root s=200 GeV at RHIC
	Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM ; Aparin, A
刊名	PHYSICAL REVIEW D
	2020
卷号	101 期号:5 页码:-
ISSN号	2470-0010
DOI	10.1103/PhysRevD.101.052004
文献子类	期刊论文
英文摘要	Particle production sensitive to nonfactorizable and nonperturbative processes that contribute to the underlying event associated with a high transverse momentum (p(T)) jet in proton thorn proton collisions at root s = 200 GeV is studied with the STAR detector. Each event is divided into three regions based on the azimuthal angle with respect to the highest-p(T) jet direction: in the leading jet direction ("Toward"), opposite to the leading jet ("Away"), and perpendicular to the leading jet ("Transverse"). In the Transverse region, the average charged particle density is found to be between 0.4 and 0.6 and the mean transverse momentum, < p(T)>, between 0.5 and 0.7 GeV/c for particles with p(T) > 0.2 GeV/c at mid-pseudorapidity (vertical bar eta vertical bar < 1) and jet p(T) > 15 GeV/c. Both average particle density and < p(T)> depend weakly on the leading jet p(T). Closer inspection of the Transverse region hints that contributions to the underlying event from initial- and final-state radiation are significantly smaller in these collisions than at the higher energies, up to 13 TeV, recorded at the LHC. Underlying event measurements associated with a high-p(T) jet will contribute to our understanding of QCD processes at hard and soft scales at RHIC energies, as well as provide constraints to modeling of underlying event dynamics.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33245]
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.Eotvos Lorand Univ, H-1117 Budapest, Hungary 2.Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany 3.Fudan Univ, Shanghai 200433, Peoples R China 4.Heidelberg Univ, D-69120 Heidelberg, Germany 5.Univ Houston, Houston, TX 77204 USA (2 6.Huzhou Univ, Huzhou 313000, Zhejiang, Peoples R China 7.Indian Inst Sci Educ & Res, Berhampur 760010, India 8.Indian Inst Sci Educ & Res IISER Tirupati, Tirupati 517507, Andhra Pradesh, India 9.Indian Inst Technol, Patna 801106, Bihar, India 10.Indiana Univ, Bloomington, IN 47408 USA
推荐引用方式 GB/T 7714	Adam, J,Adamczyk, L,Adams, JR,et al. Underlying event measurements in p plus p collisions at root s=200 GeV at RHIC[J]. PHYSICAL REVIEW D,2020,101(5):-.
APA	Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyzak, M.(2020).Underlying event measurements in p plus p collisions at root s=200 GeV at RHIC.PHYSICAL REVIEW D,101(5),-.
MLA	Adam, J,et al."Underlying event measurements in p plus p collisions at root s=200 GeV at RHIC".PHYSICAL REVIEW D 101.5(2020):-.