Suppression Pattern of Neutral Pions at High Transverse Momentum in Au plus Au Collisions at √SNN=200 GeV and Constraints on Medium Transport Coefficients

被引:330
作者
Adare, A. [1 ]
Afanasiev, S. [23 ]
Aidala, C. [9 ,10 ]
Ajitanand, N. N. [50 ]
Akiba, Y. [44 ,45 ]
Al-Bataineh, H. [39 ]
Alexander, J. [50 ]
Al-Jamel, A. [39 ]
Aoki, K. [29 ,44 ]
Aphecetche, L. [52 ]
Armendariz, R. [39 ]
Aronson, S. H. [4 ]
Asai, J. [45 ]
Atomssa, E. T. [30 ]
Averbeck, R. [51 ]
Awes, T. C. [40 ]
Azmoun, B. [4 ]
Babintsev, V. [19 ]
Baksay, G. [15 ]
Baksay, L. [15 ]
Baldisseri, A. [12 ]
Barish, K. N. [5 ]
Barnes, P. D. [32 ]
Bassalleck, B. [38 ]
Bathe, S. [5 ]
Batsouli, S. [9 ,10 ,40 ]
Baublis, V. [43 ]
Bauer, F. [5 ]
Bazilevsky, A. [4 ]
Belikov, S. [4 ,22 ]
Bennett, R. [51 ]
Berdnikov, Y. [47 ]
Bickley, A. A. [1 ]
Bjorndal, M. T. [9 ,10 ]
Boissevain, J. G. [32 ]
Borel, H. [12 ]
Boyle, K. [51 ]
Brooks, M. L. [32 ]
Brown, D. S. [39 ]
Bucher, D. [35 ]
Buesching, H. [4 ]
Bumazhnov, V. [19 ]
Bunce, G. [4 ,45 ]
Burward-Hoy, J. M. [32 ]
Butsyk, S. [32 ,51 ]
Campbell, S. [51 ]
Chai, J. -S. [24 ]
Chang, B. S. [59 ]
Charvet, J. -L. [12 ]
Chernichenko, S. [19 ]
机构
[1] Univ Colorado, Boulder, CO 80309 USA
[2] Abilene Christian Univ, Abilene, TX 79699 USA
[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[4] Brookhaven Natl Lab, Upton, NY 11973 USA
[5] Univ Calif Riverside, Riverside, CA 92521 USA
[6] Charles Univ Prague, CR-11636 Prague 1, Czech Republic
[7] CIAE, Beijing, Peoples R China
[8] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[9] Columbia Univ, New York, NY 10027 USA
[10] Nevis Labs, Irvington, NY 10533 USA
[11] Czech Tech Univ, Prague 16636 6, Czech Republic
[12] CEA Saclay, F-91191 Gif Sur Yvette, France
[13] Univ Debrecen, H-4010 Debrecen, Hungary
[14] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary
[15] Florida Inst Technol, Melbourne, FL 32901 USA
[16] Florida State Univ, Tallahassee, FL 32306 USA
[17] Georgia State Univ, Atlanta, GA 30303 USA
[18] Hiroshima Univ, Higashihiroshima 7398526, Japan
[19] Inst High Energy Phys, State Res Ctr Russian Federat, IHEP Protvino, Protvino 142281, Russia
[20] Univ Illinois, Urbana, IL 61801 USA
[21] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic
[22] Iowa State Univ, Ames, IA 50011 USA
[23] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[24] Cyclotron Applicat Lab, KAERI, Seoul, South Korea
[25] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
[26] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, MTA, RMKI, H-1525 Budapest, Hungary
[27] Korea Univ, Seoul 136701, South Korea
[28] IV Kurchatov Atom Energy Inst, Russian Res Ctr, Moscow 123182, Russia
[29] Kyoto Univ, Kyoto 6068502, Japan
[30] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[31] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[32] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[33] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Aubiere, France
[34] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
[35] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[36] Myongji Univ, Yongin 449728, Kyonggido, South Korea
[37] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan
[38] Univ New Mexico, Albuquerque, NM 87131 USA
[39] New Mexico State Univ, Las Cruces, NM 88003 USA
[40] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[41] Univ Paris 11, CNRS, IN2P3, IPN Orsay, F-91406 Orsay, France
[42] Peking Univ, Beijing 100871, Peoples R China
[43] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia
[44] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[45] RIKEN, BNL, Res Ctr, Brookhaven Natl Lab, Upton, NY 11973 USA
[46] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan
[47] St Petersburg State Polytech Univ, St Petersburg, Russia
[48] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
[49] Seoul Natl Univ, Syst Elect Lab, Seoul, South Korea
[50] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
基金
巴西圣保罗研究基金会;
关键词
D O I
10.1103/PhysRevLett.101.232301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
For Au + Au collisions at 200 GeV, we measure neutral pion production with good statistics for transverse momentum, p(T), up to 20 GeV/c. A fivefold suppression is found, which is essentially constant for 5 < p(T) < 20 GeV/c. Experimental uncertainties are small enough to constrain any model-dependent parametrization for the transport coefficient of the medium, e. g., <(q) over cap > in the parton quenching model. The spectral shape is similar for all collision classes, and the suppression does not saturate in Au + Au collisions.
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页数:7
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