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Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV

文献类型：期刊论文

作者Adamczyk, L.1; Adams, J. R.29; Adkins, J. K.19; Agakishiev, G.17; Aggarwa, M. M.31; Ahammed, Z.54; Ajitanand, N. N.42; Alekseev, I15,28; Anderson, D. M.44; Aoyama, R.48
刊名PHYSICAL REVIEW C
出版日期2018-07-31
卷号98页码:22
ISSN号2469-9985
DOI10.1103/PhysRevC.98.014915
英文摘要The azimuthal anisotropic flow of identified and unidentified charged particles has been systematically studied in Cu+Au collisions at root s(NN) = 200 GeV for harmonics n = 1-4 in the pseudorapidity range vertical bar eta vertical bar < 1. The directed flow in Cu+Au collisions is compared with the rapidity-odd and, for the first time, the rapidity-even components of charged particle directed flow in Au+Au collisions at root s(NN) = 200 GeV. The slope of the directed flow pseudorapidity dependence in Cu+Au collisions is found to be similar to that in Au+Au collisions, with the intercept shifted toward positive pseudorapidity values, i.e., the Cu-going direction. The mean transverse momentum projected onto the spectator plane < p(x)> in Cu+Au collision also exhibits approximately linear dependence on pseudorapidity with the intercept at about eta approximate to -0.4 (shifted from zero in the Au-going direction), closer to the rapidity of the Cu+Au system center of mass. The observed dependencies find a natural explanation in a picture of the directed flow originating partly due the "tilted source" and partly due to the asymmetry in the initial density distribution. A charge dependence of < p(x)> was also observed in Cu+Au collisions, consistent with an effect of the initial electric field created by charge difference of the spectator protons in two colliding nuclei. The rapidity-even component of directed flow in Au+Au collisions is close to that in Pb+Pb collisions at root s(NN) = 2.76 TeV, indicating a similar magnitude of dipolelike fluctuations in the initial-state density distribution. Higher harmonic flow in Cu+Au collisions exhibits similar trends to those observed in Au+Au and Pb+Pb collisions and is qualitatively reproduced by a viscous hydrodynamic model and a multiphase transport model. For all harmonics with n >= 2 we observe an approximate scaling of v(n) with the number of constituent quarks; this scaling works as well in Cu+Au collisions as it does in Au+Au collisions.
WOS关键词HEAVY-ION COLLISIONS ; DIRECTED FLOW ; NUCLEAR COLLISIONS ; AU+AU COLLISIONS ; ENERGY ; IDENTIFICATION ; DEPENDENCE
资助项目RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the 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 ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre of Poland, the Ministry of Science, Education and Sports of the Repu ; Ministry of Education, Youth and Sports of the Czech Republic ; Department of Atomic Energy ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF) ; Helmholtz Association
WOS研究方向Physics
语种英语
WOS记录号WOS:000440384600004
出版者AMER PHYSICAL SOC
资助机构RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the 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 ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre of Poland, the Ministry of Science, Education and Sports of the Repu ; Ministry of Education, Youth and Sports of the Czech Republic ; Department of Atomic Energy ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF) ; Helmholtz Association
源URL[http://119.78.100.186/handle/113462/59065]  
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, 9700 S Cass Ave, 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.,Adams, J. R.,Adkins, J. K.,et al. Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV[J]. PHYSICAL REVIEW C,2018,98:22.
APA Adamczyk, L..,Adams, J. R..,Adkins, J. K..,Agakishiev, G..,Aggarwa, M. M..,...&Zyzak, M..(2018).Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV.PHYSICAL REVIEW C,98,22.
MLA Adamczyk, L.,et al."Azimuthal anisotropy in Cu plus Au collisions at root s(NN)=200 GeV".PHYSICAL REVIEW C 98(2018):22.

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来源：近代物理研究所

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