Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at √SNN=2.76 TeV with the ATLAS detector

被引:211
作者
Aad, G. [71 ]
Abbott, B. [150 ]
Abdallah, J. [15 ,16 ,17 ]
Khalek, S. Abdel [154 ,155 ]
Abdelalim, A. A. [72 ]
Abdinov, O. [14 ]
Abi, B. [151 ]
Abolins, M. [123 ]
AbouZeid, O. S. [213 ]
Abramowicz, H. [207 ]
Abreu, H. [186 ]
Acerbi, E. [124 ,125 ]
Acharya, B. S. [220 ,221 ]
Adamczyk, L. [60 ]
Adams, D. L. [39 ]
Addy, T. N. [83 ]
Adelman, J. [238 ]
Adomeit, S. [134 ]
Adragna, R. [107 ]
Adye, T. [172 ]
Aefsky, S. [34 ]
Aguilar-Saavedra, J. A. [166 ,167 ,241 ,242 ]
Agustoni, M. [24 ,25 ]
Aharrouche, M. [115 ]
Ahlen, S. P. [33 ]
Ahles, F. [71 ]
Ahmad, A. [201 ,202 ]
Ahsan, M. [63 ]
Aielli, G. [177 ,178 ]
Akdogan, T. [27 ]
Akesson, T. P. A. [113 ]
Akimoto, G. [209 ,210 ]
Akimov, A. V. [130 ]
Alam, M. S. [1 ]
Alam, M. A. [108 ]
Albert, J. [231 ]
Albrand, S. [80 ,81 ,82 ]
Aleksa, M. [45 ]
Aleksandrov, I. N. [93 ]
Alessandria, F. [124 ]
Alexa, C. [40 ]
Alexander, G. [207 ]
Alexandre, G. [72 ]
Alexopoulos, T. [13 ]
Alhroob, M. [220 ,222 ]
Aliev, M. [23 ]
Alimonti, G. [124 ]
Alison, J. [161 ]
Allbrooke, B. M. M. [26 ]
Allport, P. P. [104 ]
机构
[1] SUNY Albany, Albany, NY 12222 USA
[2] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[3] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey
[4] Gazi Univ, Dept Phys, Ankara, Turkey
[5] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[6] Turkish Atom Energy Commiss, Ankara, Turkey
[7] CNRS, IN2P3, LAPP, Annecy Le Vieux, France
[8] Univ Savoie, Annecy Le Vieux, France
[9] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[10] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[11] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[12] Univ Athens, Dept Phys, Athens, Greece
[13] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[14] Azerbaijan Acad Sci, Inst Phys, Baku 370143, Azerbaijan
[15] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[16] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain
[17] ICREA, Barcelona, Spain
[18] Univ Belgrade, Inst Phys, Belgrade, Serbia
[19] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia
[20] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[21] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Dept Phys, Berkeley, CA 94720 USA
[22] Univ Calif Berkeley, Berkeley, CA 94720 USA
[23] Humboldt Univ, Dept Phys, Berlin, Germany
[24] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[25] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[26] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[27] Bogazici Univ, Dept Phys, Istanbul, Turkey
[28] Dogus Univ, Div Phys, Istanbul, Turkey
[29] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkey
[30] INFN Sez Bologna, Bologna, Italy
[31] Univ Bologna, Dipartmento Fis, Bologna, Italy
[32] Univ Bonn, Inst Phys, Bonn, Germany
[33] Boston Univ, Dept Phys, Boston, MA 02215 USA
[34] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[35] Univ Fed Rio de Janeiro, COPPE EE IF, Rio De Janeiro, Brazil
[36] Fed Univ Juiz de Fora UFJF, Juiz De Fora, Brazil
[37] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil
[38] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil
[39] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[40] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[41] Univ Politehn Bucuresti, Bucharest, Romania
[42] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[43] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[44] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[45] CERN, Geneva, Switzerland
[46] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[47] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[48] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[49] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[50] Univ Sci & Technol China, Dept Modern Phys, Hefei, Anhui, Peoples R China
基金
美国国家科学基金会; 巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会;
关键词
LHC; ATLAS; Heavy ion; Jets; RADIATIVE ENERGY-LOSS; QCD;
D O I
10.1016/j.physletb.2013.01.024
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at root S-NN = 2.76 TeV corresponding to an integrated luminosity of approximately 7 mu b(-1), ATLAS has measured jets with a calorimeter system over the pseudorapidity interval vertical bar eta vertical bar < 2.1 and over the transverse momentum range 38 < pT <210 GeV. Jets were reconstructed using the anti-k(t) algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," R-CP. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. R-CP varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:220 / 241
页数:22
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