Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

doi:10.1103/PhysRevLett.121.032301

	Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV
	Bai, X.7; Adamczyk, L.1; Adams, J. R.29; Adkins, J. K.19; Agakishiev, G.17; Aggarwal, M. M.31; Ahammed, Z.51; Ajitanand, N. N.40; Alekseev, I 15,26; Anderson, D. M.42
刊名	PHYSICAL REVIEW LETTERS
	2018-07-19
卷号	121 页码:032301
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.121.032301
英文摘要	We report measurements of the nuclear modification factor R-CP for charged hadrons as well as identified pi (+(-)) K+(-), and p((p) over bar) for Au + Au collision energies of root s(NN) = 7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-p(T) net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton R-CP at high p(T) does depend on the collision energy, neither the proton nor the antiproton R-CP at high p(T) exhibit net suppression at any energy. A study of how the binary collision-scaled high-p(T) yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.
WOS关键词	QUARK-GLUON PLASMA ; NUCLEUS-NUCLEUS COLLISIONS ; LARGE TRANSVERSE-MOMENTUM ; COLLABORATION ; PERSPECTIVE ; DETECTOR ; HADRONS ; MATTER ; TEV ; PP
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000439286800003
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/59657]
专题	中国科学院近代物理研究所
作者单位	1.AGH Univ Sci & Technol, FPACS, 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	Bai, X.,Adamczyk, L.,Adams, J. R.,et al. Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV[J]. PHYSICAL REVIEW LETTERS,2018,121:032301.
APA	Bai, X..,Adamczyk, L..,Adams, J. R..,Adkins, J. K..,Agakishiev, G..,...&STAR Collaboration.(2018).Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV.PHYSICAL REVIEW LETTERS,121,032301.
MLA	Bai, X.,et al."Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV".PHYSICAL REVIEW LETTERS 121(2018):032301.