Centrality and Transverse Momentum Dependence of Elliptic Flow of Multistrange Hadrons and φ Meson in Au plus Au Collisions at √S NN=200 GeV

被引:60
作者
Adamczyk, L. [1 ]
Adkins, J. K. [20 ]
Agakishiev, G. [18 ]
Aggarwal, M. M. [30 ]
Ahammed, Z. [47 ]
Alekseev, I. [16 ]
Aparin, A. [18 ]
Arkhipkin, D. [3 ]
Aschenauer, E. C. [3 ]
Averichev, G. S. [18 ]
Bairathi, V. [27 ]
Banerjee, A. [47 ]
Bellwied, R. [43 ]
Bhasin, A. [17 ]
Bhati, A. K. [30 ]
Bhattarai, P. [42 ]
Bielcik, J. [10 ]
Bielcikova, J. [11 ]
Bland, L. C. [3 ]
Bordyuzhin, I. G. [16 ]
Bouchet, J. [19 ]
Brandin, A. V. [26 ]
Bunzarov, I. [18 ]
Butterworth, J. [36 ]
Caines, H. [51 ]
Sanchez, M. Calderon de la Barca [5 ]
Campbell, J. M. [28 ]
Cebra, D. [5 ]
Cervantes, M. C. [41 ]
Chakaberia, I. [3 ]
Chaloupka, P. [10 ]
Chang, Z. [41 ]
Chattopadhyay, S. [47 ]
Chen, J. H. [39 ]
Chen, X. [22 ]
Cheng, J. [44 ]
Cherney, M. [9 ]
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 ]
Didenko, L. [3 ]
Dilks, C. [31 ]
Dong, X. [23 ]
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, Daejeon 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, Jatni 752050, Odisha, 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] Temple Univ, Philadelphia, PA 19122 USA
[41] Texas A&M Univ, College Stn, TX 77843 USA
[42] Univ Texas Austin, Austin, TX 78712 USA
[43] Univ Houston, Houston, TX 77204 USA
[44] Tsinghua Univ, Beijing 100084, Peoples R China
[45] US Naval Acad, Annapolis, MD 21402 USA
[46] Valparaiso Univ, Valparaiso, IN 46383 USA
[47] Ctr Variable Energy Cyclotron, Kolkata 700064, India
[48] Warsaw Univ Technol, PL-00661 Warsaw, Poland
[49] Wayne State Univ, Detroit, MI 48201 USA
[50] World Lab Cosmol & Particle Phys WLCAPP, Cairo 11571, Egypt
基金
美国国家科学基金会; 新加坡国家研究基金会;
关键词
AZIMUTHAL ANISOTROPY;
D O I
10.1103/PhysRevLett.116.062301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present high precision measurements of elliptic flow near midrapidity (vertical bar y vertical bar < 1.0) for multistrange hadrons and phi meson as a function of centrality and transverse momentum in Au + Au collisions at center of mass energy root S (NN) = 200 GeV. We observe that the transverse momentum dependence of phi and Omega v(2) is similar to that of pi and p, respectively, which may indicate that the heavier strange quark flows as strongly as the lighter up and down quarks. This observation constitutes a clear piece of evidence for the development of partonic collectivity in heavy-ion collisions at the top RHIC energy. Number of constituent quark scaling is found to hold within statistical uncertainty for both 0%-30% and 30%-80% collision centrality. There is an indication of the breakdown of previously observed mass ordering between phi and proton v(2) at low transverse momentum in the 0%-30% centrality range, possibly indicating late hadronic interactions affecting the proton v(2).
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页数:7
相关论文
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