Measurements of jet quenching with semi-inclusive hadron plus jet distributions in Au plus Au collisions at root s(NN)=200 GeV

doi:10.1103/PhysRevC.96.024905

	Measurements of jet quenching with semi-inclusive hadron plus jet distributions in Au plus Au collisions at root s(NN)=200 GeV
	Adamczyk, L.1; Adkins, J. K.19; Agakishiev, G.17; Aggarwal, M. M.31; Ahammed, Z.50; Ajitanand, N. N.40; Alekseev, I.15,26; Anderson, D. M.42; Aoyama, R.46; Aparin, A.17
刊名	PHYSICAL REVIEW C
	2017-08-14
卷号	96 页码:25
ISSN号	2469-9985
DOI	10.1103/PhysRevC.96.024905
英文摘要	The STAR Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum hadron trigger, in central and peripheral Au + Au collisions at root s(NN) = 200 GeV. Charged jets are reconstructed with the anti-kT algorithm for jet radii R between 0.2 and 0.5 and with low infrared cutoff of track constituents (p(T) > 0.2 GeV/c). A novel mixed-event technique is used to correct the large uncorrelated background present in heavy ion collisions. Corrected recoil jet distributions are reported at midrapidity, for charged-jet transverse momentum p(T,jet)(ch) < 30 GeV/c. Comparison is made to similar measurements for Pb + Pb collisions at root s = 2.76 TeV, to calculations for p + p collisions at root s = 200 GeV based on the PYTHIA Monte Carlo generator and on a next-to-leading order perturbative QCD approach, and to theoretical calculations incorporating jet quenching. The recoil jet yield is suppressed in central relative to peripheral collisions, with the magnitude of the suppression corresponding to medium-induced charged energy transport out of the jet cone of 2.8 +/- 0.2(stat) +/- 1.5(sys) GeV/c, for 10 < p(T,jet)(ch) < 20 GeV/c and R = 0.5. No medium-induced change in jet shape is observed for R < 0.5. The azimuthal distribution of low-p(T,jet)(ch) recoil jets may be enhanced at large azimuthal angles to the trigger axis, due to scattering off quasiparticles in the hot QCD medium. Measurement of this distribution gives a 90% statistical confidence upper limit to the yield enhancement at large deflection angles in central Au + Au collisions of 50 +/- 30( sys)% of the large-angle yield in p + p collisions predicted by PYTHIA.
资助项目	RHIC Operations Group ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within US DOE Office of Science, ; US National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; National Research Foundation of Korea ; GA and MSMT of the Czech Republic ; Department of Atomic Energy and Department of Science and Technology of the Government of India ; National Science Centre of Poland ; National Research Foundation ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia and German Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie (BMBF) ; Helmholtz Association ; RCF at BNL
WOS关键词	HEAVY-ION COLLISIONS ; PB-PB COLLISIONS ; TRANSVERSE-MOMENTUM ; CENTRALITY DEPENDENCE ; RECONSTRUCTED JETS ; PP COLLISIONS ; TEV ; STAR ; SUPPRESSION ; DETECTOR
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000407551700003
资助机构	RHIC Operations Group ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within US DOE Office of Science, ; US National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; National Research Foundation of Korea ; GA and MSMT of the Czech Republic ; Department of Atomic Energy and Department of Science and Technology of the Government of India ; National Science Centre of Poland ; National Research Foundation ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia and German Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie (BMBF) ; Helmholtz Association ; RCF at BNL
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45560]
专题	中国科学院近代物理研究所
通讯作者	Adamczyk, L.
作者单位	1.AGH Univ Sci & Technol, PL-30059 Krakow, Poland 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Brookhaven Natl Lab, Upton, NY 11973 USA 4.Univ Calif Berkeley, Berkeley, CA 94720 USA 5.Univ Calif Davis, Davis, CA 95616 USA 6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 7.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China 8.Univ Illinois, Chicago, IL 60607 USA 9.Creighton Univ, Omaha, NE 68178 USA 10.Czech Tech Univ, FNSPE, Prague 11519, Czech Republic
推荐引用方式 GB/T 7714	Adamczyk, L.,Adkins, J. K.,Agakishiev, G.,et al. Measurements of jet quenching with semi-inclusive hadron plus jet distributions in Au plus Au collisions at root s(NN)=200 GeV[J]. PHYSICAL REVIEW C,2017,96:25.
APA	Adamczyk, L..,Adkins, J. K..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,...&Zyzak, M..(2017).Measurements of jet quenching with semi-inclusive hadron plus jet distributions in Au plus Au collisions at root s(NN)=200 GeV.PHYSICAL REVIEW C,96,25.
MLA	Adamczyk, L.,et al."Measurements of jet quenching with semi-inclusive hadron plus jet distributions in Au plus Au collisions at root s(NN)=200 GeV".PHYSICAL REVIEW C 96(2017):25.