Transverse-energy distributions at midrapidity in p plus p, d plus Au, and Au plus Au collisions at √sNN=62.4-200 GeV and implications for particle-production models

被引:81
作者
Adler, S. S. [7 ]
Afanasiev, S. [25 ]
Aidala, C. [12 ,13 ,37 ]
Ajitanand, N. N. [54 ]
Akiba, Y. [27 ,48 ,49 ]
Al-Jamel, A. [42 ]
Alexander, J. [54 ]
Aoki, K. [30 ,48 ]
Aphecetche, L. [56 ]
Armendariz, R. [42 ]
Aronson, S. H. [7 ]
Averbeck, R. [55 ]
Awes, T. C. [44 ]
Azmoun, B. [7 ]
Babintsev, V. [20 ]
Baldisseri, A. [14 ]
Barish, K. N. [8 ]
Barnes, P. D. [34 ]
Bassalleck, B. [41 ]
Bathe, S. [6 ,8 ,38 ]
Batsouli, S. [12 ,13 ]
Baublis, V. [47 ]
Bauer, F. [8 ]
Bazilevsky, A. [7 ,49 ]
Belikov, S. [7 ,20 ,23 ]
Bennett, R. [55 ]
Berdnikov, Y. [51 ]
Bjorndal, M. T. [12 ,13 ]
Boissevain, J. G. [34 ]
Borel, H. [14 ]
Boyle, K. [55 ]
Brooks, M. L. [34 ]
Brown, D. S. [42 ]
Bruner, N. [41 ]
Bucher, D. [38 ]
Buesching, H. [7 ,38 ]
Bumazhnov, V. [20 ]
Bunce, G. [7 ,49 ]
Burward-Hoy, J. M. [33 ,34 ]
Butsyk, S. [55 ]
Camard, X. [56 ]
Campbell, S. [55 ]
Chai, J. -S. [26 ]
Chand, P. [5 ]
Chang, W. C. [2 ]
Chernichenko, S. [20 ]
Chi, C. Y. [12 ,13 ]
Chiba, J. [27 ]
Chiu, M. [12 ,13 ]
Choi, I. J. [64 ]
机构
[1] Abilene Christian Univ, Abilene, TX 79699 USA
[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[3] Augustana Coll, Dept Phys, Sioux Falls, SD 57197 USA
[4] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[5] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[6] CUNY Bernard M Baruch Coll, New York, NY 10010 USA
[7] Brookhaven Natl Lab, Upton, NY 11973 USA
[8] Univ Calif Riverside, Riverside, CA 92521 USA
[9] China Inst Atom Energy, Sci & Technol Nucl Data Lab, Beijing 102413, Peoples R China
[10] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[11] Univ Colorado, Boulder, CO 80309 USA
[12] Columbia Univ, New York, NY 10027 USA
[13] Nevis Labs, New York, NY 10533 USA
[14] CEA Saclay, F-91191 Gif Sur Yvette, France
[15] Debrecen Univ, H-4010 Debrecen, Hungary
[16] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary
[17] Florida State Univ, Tallahassee, FL 32306 USA
[18] Georgia State Univ, Atlanta, GA 30303 USA
[19] Hiroshima Univ, Higashihiroshima 7398526, Japan
[20] State Res Ctr Russian Federat, Inst High Energy Phys, IHEP Protvino, Protvino 142281, Russia
[21] Univ Illinois, Urbana, IL 61801 USA
[22] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[23] Iowa State Univ, Ames, IA 50011 USA
[24] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[25] Joint Inst Nucl Res, Dubna, Moscow Region, Russia
[26] KAERI, Cyclotron Applicat Lab, Seoul, South Korea
[27] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
[28] Korea Univ, Seoul 136701, South Korea
[29] Russian Res Ctr Kurchatov Inst, Moscow 123098, Russia
[30] Kyoto Univ, Kyoto 6068502, Japan
[31] CNRS, IN2P3, Ecole Polytech, Lab Leprince Ringuet, F-91128 Palaiseau, France
[32] Lahore Univ Management Sci, Dept Phys, Lahore, Pakistan
[33] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[34] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[35] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Aubiere, France
[36] Lund Univ, Dept Phys, S-22362 Lund, Sweden
[37] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[38] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[39] Myongji Univ, Yongin 449728, Kyonggido, South Korea
[40] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan
[41] Univ New Mexico, Albuquerque, NM 87131 USA
[42] New Mexico State Univ, Las Cruces, NM 88003 USA
[43] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
[44] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[45] Univ Paris 11, CNRS, IN2P3, IPN Orsay, F-91406 Orsay, France
[46] Peking Univ, Beijing 100871, Peoples R China
[47] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Regio, Russia
[48] RIKEN Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan
[49] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA
[50] Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan
来源
PHYSICAL REVIEW C | 2014年 / 89卷 / 04期
基金
日本学术振兴会; 新加坡国家研究基金会; 美国国家科学基金会; 以色列科学基金会;
关键词
NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; CENTRAL RAPIDITY REGION; MULTIPLICITY DISTRIBUTIONS; CENTRALITY DEPENDENCE; P+A COLLISIONS; PROTON; EMISSION; DENSITY; O-16+PB;
D O I
10.1103/PhysRevC.89.044905
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
Measurements of the midrapidity transverse-energy distribution, dE(T)/d eta, are presented for p + p, d+Au, and Au+Au collisions atv root s(NN) = 200 GeV and additionally for Au+Au collisions atv root s(NN) = 62.4 and 130 GeV. The dE(T)/d eta distributions are first compared with the number of nucleon participants N-part, number of binary collisions N-coll, and number of constituent-quark participants N-qp calculated from a Glauber model based on the nuclear geometry. For Au+Au, < dE(T)/d eta >/N-part increases with N-part, while < dE(T)/d eta >/N-qp is approximately constant for all three energies. This indicates that the two-component ansatz, dE(T)/d eta alpha (1 - x)N-part/2 + xN(coll), which was used to represent E-T distributions, is simply a proxy for N-qp, and that the N-coll term does not represent a hard-scattering component in E-T distributions. The dE(T)/d eta distributions of Au+Au and d+Au are then calculated from the measured p + p E-T distribution using two models that both reproduce the Au+Au data. However, while the number-of-constituent-quark-participant model agrees well with the d+Au data, the additive-quark model does not.
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