Centrality dependence of identified particle elliptic flow in relativistic heavy ion collisions at √sNN=7.7-62.4 GeV

被引:66
|
作者
Adamczyk, L. [1 ]
Adkins, J. K. [20 ]
Agakishiev, G. [18 ]
Aggarwal, M. M. [30 ]
Ahammed, Z. [48 ]
Alekseev, I. [16 ]
Aparin, A. [18 ]
Arkhipkin, D. [3 ]
Aschenauer, E. C. [3 ]
Averichev, G. S. [18 ]
Bai, X. [8 ]
Bairathi, V. [27 ]
Banerjee, A. [48 ]
Bellwied, R. [44 ]
Bhasin, A. [17 ]
Bhati, A. K. [30 ]
Bhattarai, P. [43 ]
Bielcik, J. [10 ]
Bielcikova, J. [11 ]
Bland, L. C. [3 ]
Bordyuzhin, I. G. [16 ]
Bouchet, J. [19 ]
Brandenburg, D. [36 ]
Brandin, A. V. [26 ]
Bunzarov, I. [18 ]
Butterworth, J. [36 ]
Caines, H. [52 ]
Sanchez, M. Calderon de la Barca [5 ]
Campbell, J. M. [28 ]
Cebra, D. [5 ]
Cervantes, M. C. [42 ]
Chakaberia, I. [3 ]
Chaloupka, P. [10 ]
Chang, Z. [42 ]
Chattopadhyay, S. [48 ]
Chen, X. [22 ]
Chen, J. H. [39 ]
Cheng, J. [45 ]
Cherney, M. [9 ]
Chisman, O. [6 ]
Christie, W. [3 ]
Contin, G. [23 ]
Crawford, H. J. [4 ]
Das, S. [13 ]
De Silva, L. C. [9 ]
Debbe, R. R. [3 ]
Dedovich, T. G. [18 ]
Deng, J. [38 ]
Derevschikov, A. A. [32 ]
di Ruzza, B. [3 ]
机构
[1] AGH Univ Sci & Technol, 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 HZNU, Wuhan 430079, 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
[11] Nucl Phys Inst AS CR, Rez 25068, Czech Republic
[12] FIAS, D-60438 Frankfurt, Germany
[13] Inst Phys, Bhubaneswar 751005, Orissa, India
[14] Indian Inst Technol, Bombay 400076, Maharashtra, India
[15] Indiana Univ, Bloomington, IN 47408 USA
[16] Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia
[17] Univ Jammu, Jammu 180001, India
[18] Joint Inst Nucl Res, Dubna 141980, Russia
[19] Kent State Univ, Kent, OH 44242 USA
[20] Univ Kentucky, Lexington, KY 40506 USA
[21] Korea Inst Sci & Technol Informat, Taejon 305701, South Korea
[22] Inst Modern Phys, Lanzhou 730000, Peoples R China
[23] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[24] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[25] Michigan State Univ, E Lansing, MI 48824 USA
[26] Moscow Engn Phys Inst, Moscow 115409, Russia
[27] Natl Inst Sci Educ & Res, Bhubaneswar 751005, Orissa, India
[28] Ohio State Univ, Columbus, OH 43210 USA
[29] Inst Nucl Phys PAN, PL-31342 Krakow, Poland
[30] Panjab Univ, Chandigarh 160014, India
[31] Penn State Univ, University Pk, PA 16802 USA
[32] Inst High Energy Phys, Protvino 142281, Russia
[33] Purdue Univ, W Lafayette, IN 47907 USA
[34] Pusan Natl Univ, Pusan 609735, South Korea
[35] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[36] Rice Univ, Houston, TX 77251 USA
[37] Univ Sci & Technol China, Hefei 230026, Peoples R China
[38] Shandong Univ, Jinan 250100, Shandong, Peoples R China
[39] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[40] SUNY Stony Brook, Stony Brook, NY 11794 USA
[41] Temple Univ, Philadelphia, PA 19122 USA
[42] Texas A&M Univ, College Stn, TX 77843 USA
[43] Univ Texas Austin, Austin, TX 78712 USA
[44] Univ Houston, Houston, TX 77204 USA
[45] Tsinghua Univ, Beijing 100084, Peoples R China
[46] US Naval Acad, Annapolis, MD 21402 USA
[47] Valparaiso Univ, Valparaiso, IN 46383 USA
[48] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India
[49] Warsaw Univ Technol, PL-00661 Warsaw, Poland
[50] Wayne State Univ, Detroit, MI 48201 USA
基金
新加坡国家研究基金会; 美国国家科学基金会;
关键词
RESONANCE DECAY; PARTON; MODEL;
D O I
10.1103/PhysRevC.93.014907
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Elliptic flow (v(2)) values for identified particles at midrapidity in Au + Au collisions measured by the STAR experiment in the Beam Energy Scan at the Relativistic Heavy Ion Collider at root s(NN) = 7.7-62.4 GeV are presented for three centrality classes. The centrality dependence and the data at root s(NN) = 14.5 GeV are new. Except at the lowest beam energies, we observe a similar relative v(2) baryon-meson splitting for all centrality classes which is in agreement within 15% with the number-of-constituent quark scaling. The larger v(2) for most particles relative to antiparticles, already observed for minimum bias collisions, shows a clear centrality dependence, with the largest difference for the most central collisions. Also, the results are compared with a multiphase transport (AMPT) model and fit with a blast wave model.
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页数:13
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