Measurement of jet radial profiles in Pb-Pb collisions at root s(NN)=2.76 TeV

doi:10.1016/j.physletb.2019.07.020

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Measurement of jet radial profiles in Pb-Pb collisions at root s(NN)=2.76 TeV
	Acharya, S ; Adamova, D ; Adhya, SP ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z
刊名	PHYSICS LETTERS B
	2019
卷号	796 页码:204-219
关键词	LARGE TRANSVERSE-MOMENTUM CHARGED-PARTICLE PRODUCTION LEAD-LEAD COLLISIONS QUARK-GLUON PLASMA PLUS AU COLLISIONS CENTRALITY DEPENDENCE ROOT-S-NN=2.76 TEV SUPPRESSION PSEUDORAPIDITY PERSPECTIVE
ISSN号	0370-2693
DOI	10.1016/j.physletb.2019.07.020
文献子类	期刊论文
英文摘要	The jet radial structure and particle transverse momentum (p(T)) composition within jets are presented in centrality-selected Pb-Pb collisions at root s(NN) = 2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R = 0.3 at midrapidity vertical bar eta(chjet)vertical bar < 0.6 for transverse momenta P-T,P- (ch jet) = 30-120 GeV/c. Jet-hadron correlations in relative azimuth and pseudorapidity space (Delta phi/Delta eta) are measured to study the distribution of the associated particles around the jet axis for different p(T, assoc)-ranges between 1 and 20 GeV/c. The data in Pb-Pb collisions are compared to reference distributions for pp collisions, obtained using embedded PYTHIA simulations. The number of high-p(T) associate particles (4 < p(T,assoc) < 20 GeV/c) in Pb-Pb collisions is found to be suppressed compared to the reference by 30 to 10%, depending on centrality. The radial particle distribution relative to the jet axis shows a moderate modification in Pb-Pb collisions with respect to PYTHIA. High-p(T) associate particles are slightly more collimated in Pb-Pb collisions compared to the reference, while low-p(T) associate particles tend to be broadened. The results, which are presented for the first time down to p(T, chjet) = 30 GeV/c in Pb-Pb collisions, are compatible with both previous jet-hadron-related measurements from the CMS Collaboration and jet shape measurements from the ALICE Collaboration at higher p(T), and add further support for the established picture of in-medium parton energy loss. (C) 2019 The Author(s). Published by Elsevier B.V.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32124]
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.Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab Fdn, Yerevan, Armenia; 2.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine; 3.Bose Inst, Dept Phys, Kolkata, India; 4.CAPSS, Kolkata, India; 5.Budker Inst Nucl Phys, Novosibirsk, Russia; 6.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA; 7.Cent China Normal Univ, Wuhan, Hubei, Peoples R China; 8.IN2P3, Ctr Calcul, Lyon, France; 9.Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba; 10.CINVESTAV, Ctr Invest & Estudios Avanzados, Mexico City, DF, Mexico;
推荐引用方式 GB/T 7714	Acharya, S,Adamova, D,Adhya, SP,et al. Measurement of jet radial profiles in Pb-Pb collisions at root s(NN)=2.76 TeV[J]. PHYSICS LETTERS B,2019,796:204-219.
APA	Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2019).Measurement of jet radial profiles in Pb-Pb collisions at root s(NN)=2.76 TeV.PHYSICS LETTERS B,796,204-219.
MLA	Acharya, S,et al."Measurement of jet radial profiles in Pb-Pb collisions at root s(NN)=2.76 TeV".PHYSICS LETTERS B 796(2019):204-219.