Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at √sNN=5.02 TeV

被引:176
作者
Aad, G. [74 ]
Abajyan, T. [33 ]
Abbott, B. [153 ]
Abdallah, J. [16 ,17 ,18 ]
Khalek, S. Abdel [157 ,158 ]
Abdelalim, A. A. [75 ]
Abdinov, O. [15 ]
Aben, R. [147 ]
Abi, B. [154 ]
Abolins, M. [126 ]
AbouZeid, O. S. [219 ]
Abramowicz, H. [213 ]
Abreu, H. [192 ]
Abulaiti, Y. [204 ,205 ]
Acharya, B. S. [226 ,227 ,247 ]
Adamczyk, L. [62 ]
Adams, D. L. [40 ]
Addy, T. N. [86 ]
Adelman, J. [244 ]
Adomeit, S. [137 ]
Adye, T. [176 ]
Aefsky, S. [35 ]
Aguilar-Saavedra, J. A. [169 ,170 ,171 ]
Agustoni, M. [25 ,26 ]
Ahlen, S. P. [34 ]
Ahles, F. [74 ]
Ahmad, A. [207 ,208 ]
Ahsan, M. [66 ]
Aielli, G. [181 ,182 ]
Akesson, T. P. A. [116 ]
Akimoto, G. [215 ,216 ]
Akimov, A. V. [133 ]
Alam, M. A. [111 ]
Albert, J. [237 ]
Albrand, S. [83 ,84 ,85 ]
Aleksa, M. [46 ]
Aleksandrov, I. N. [96 ]
Alessandria, F. [127 ]
Alexa, C. [41 ]
Alexander, G. [213 ]
Alexandre, G. [75 ]
Alexopoulos, T. [14 ]
Alhroob, M. [226 ,228 ]
Aliev, M. [24 ]
Alimonti, G. [127 ]
Alison, J. [47 ]
Allbrooke, B. M. M. [27 ]
Allison, L. J. [104 ]
Allport, P. P. [107 ]
Allwood-Spiers, S. E. [81 ]
机构
[1] Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia
[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey
[5] Gazi Univ, Dept Phys, Ankara, Turkey
[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[7] Turkish Atom Energy Commiss, Ankara, Turkey
[8] CNRS, IN2P3, LAPP, Annecy Le Vieux, France
[9] Univ Savoie, Annecy Le Vieux, France
[10] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[11] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[12] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[13] Univ Athens, Dept Phys, Athens, Greece
[14] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[15] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan
[16] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[17] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain
[18] ICREA, Barcelona, Spain
[19] Univ Belgrade, Inst Phys, Belgrade, Serbia
[20] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia
[21] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[22] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA
[23] Univ Calif Berkeley, Berkeley, CA 94720 USA
[24] Humboldt Univ, Dept Phys, Berlin, Germany
[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[27] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[28] Bogazici Univ, Dept Phys, Istanbul, Turkey
[29] Dogus Univ, Div Phys, Istanbul, Turkey
[30] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[31] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[32] Univ Bologna, Dipartimento Fis, Bologna, Italy
[33] Univ Bonn, Inst Phys, Bonn, Germany
[34] Boston Univ, Dept Phys, Boston, MA 02215 USA
[35] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[36] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[37] Fed Univ Juiz de Fora UFJF, Juiz De Fora, Brazil
[38] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil
[39] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil
[40] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[41] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[42] Univ Politehn Bucuresti, Bucharest, Romania
[43] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[44] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[45] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[46] CERN, Geneva, Switzerland
[47] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[48] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[49] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[50] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
基金
美国国家科学基金会; 加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会;
关键词
PROTON-PROTON COLLISIONS; FLOW;
D O I
10.1016/j.physletb.2013.06.057
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In order to study further the long-range correlations ("ridge") observed recently in p + Pb collisions at root s(NN) = 5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v(2), has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1 mu b(-1), the parameter v(2) has been obtained using two- and four-particle cumulants over the pseudorapidity range vertical bar eta vertical bar < 2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1 < eta < 4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb + Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p + Pb collisions. Despite the small transverse spatial extent of the p + Pb collision system, the large magnitude of v(2) and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p + Pb reactions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:60 / 78
页数:19
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