Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from √SNN = 22.5 to 200 GeV

被引：65

作者：

Adare, A. ^{[1
]}

Adler, S. S. ^{[6
]}

Afanasiev, S. ^{[24
]}

Aidala, C. ^{[11
,39
]}

Ajitanand, N. N. ^{[52
]}

Akiba, Y. ^{[26
,46
,47
]}

Al-Bataineh, H. ^{[41
]}

Alexander, J. ^{[52
]}

Al-Jamel, A. ^{[41
]}

Aoki, K. ^{[30
,46
]}

Aphecetche, L. ^{[54
]}

Armendariz, R. ^{[41
]}

Aronson, S. H. ^{[6
]}

Asai, J. ^{[47
]}

Atomssa, E. T. ^{[31
]}

Averbeck, R. ^{[53
]}

Awes, T. C. ^{[42
]}

Azmoun, B. ^{[6
]}

Babintsev, V. ^{[20
]}

Baksay, G. ^{[16
]}

Baksay, L. ^{[16
]}

Baldisseri, A. ^{[13
]}

Barish, K. N. ^{[7
]}

Barnes, P. D. ^{[33
]}

Bassalleck, B. ^{[40
]}

Bathe, S. ^{[7
,36
]}

Batsouli, S. ^{[11
,39
,42
]}

Baublis, V. ^{[45
]}

Bauer, F. ^{[7
]}

Bazilevsky, A. ^{[6
,47
]}

Belikov, S. ^{[6
,20
,23
]}

Bennett, R. ^{[53
]}

Berdnikov, Y. ^{[49
]}

Bickley, A. A. ^{[1
]}

Bjorndal, M. T. ^{[11
,39
]}

Boissevain, J. G. ^{[33
]}

Borel, H. ^{[13
]}

Boyle, K. ^{[53
]}

Brooks, M. L. ^{[33
]}

Brown, D. S. ^{[41
]}

Bruner, N. ^{[40
]}

Bucher, D. ^{[36
]}

Buesching, H. ^{[6
,36
]}

Bumazhnov, V. ^{[20
]}

Bunce, G. ^{[6
,47
]}

Burward-Hoy, J. M. ^{[32
,33
]}

Butsyk, S. ^{[33
,53
]}

Camard, X. ^{[54
]}

Campbell, S. ^{[53
]}

Chai, J. -S. ^{[25
]}

机构：

[1] Univ Colorado, Boulder, CO 80309 USA

[2] Abilene Christian Univ, Abilene, TX 79699 USA

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[5] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

[6] Brookhaven Natl Lab, Upton, NY 11973 USA

[7] Univ Calif Riverside, Riverside, CA 92521 USA

[8] Charles Univ Prague, CZ-11636 Prague, Czech Republic

[9] China Inst Atom Energy CIAE, Beijing, Peoples R China

[10] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan

[11] Columbia Univ, New York, NY 10027 USA

[12] Czech Tech Univ, CZ-16636 Prague 6, Czech Republic

[13] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France

[14] Debrecen Univ, H-4010 Debrecen, Hungary

[15] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary

[16] Florida Inst Technol, Melbourne, FL 32901 USA

[17] Florida State Univ, Tallahassee, FL 32306 USA

[18] Georgia State Univ, Atlanta, GA 30303 USA

[19] Hiroshima Univ, Higashihiroshima 7398526, Japan

[20] Inst High Energy Phys, State Res Ctr Russian Fed, IHEP Protvino, RU-142281 Protvino, Russia

[21] Univ Illinois, Urbana, IL 61801 USA

[22] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[23] Iowa State Univ, Ames, IA 50011 USA

[24] Joint Inst Nucl Res, RU-141980 Dubna, Moscow Region, Russia

[25] KAERI, Cyclotron Applicat Lab, Seoul, South Korea

[26] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[27] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, MTA KFKI RMKI, H-1525 Budapest, Hungary

[28] Korea Univ, Seoul 136701, South Korea

[29] IV Kurchatov Atom Energy Inst, Russian Res Ctr, Moscow 123182, Russia

[30] Kyoto Univ, Kyoto 6068502, Japan

[31] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[32] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[33] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[34] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Aubiere, France

[35] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[36] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[37] Myongji Univ, Yongin 449728, Kyonggido, South Korea

[38] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan

[39] Nevis Labs, Irvington, NY 10533 USA

[40] Univ New Mexico, Albuquerque, NM 87131 USA

[41] New Mexico State Univ, Las Cruces, NM 88003 USA

[42] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[43] Univ Paris 11, CNRS, IN2P3, IPN Orsay, F-91406 Orsay, France

[44] Peking Univ, Beijing 100871, Peoples R China

[45] Petersburg Nucl Phys Inst, PNPI, RU-188300 Gatchina, Leningrad Regio, Russia

[46] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[47] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[48] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan

[49] St Petersburg State Polytech Univ, St Petersburg, Russia

[50] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW C | 2008年 / 78卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.78.044902

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：

A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at <radical><radicand>s(NN)</radicand></radical>=62.4 and 200 GeV, and Cu+Cu collisions at <radical><radicand>s(NN)</radicand></radical>=22.5,62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for nondynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon p+p data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. A comparison of the data with a model where hadrons are independently emitted from a number of hadron clusters suggests that the mean number of hadrons per cluster is small in heavy ion collisions.

引用

页数：15

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