Beam-energy and system-size dependence of dynamical net charge fluctuations

被引：49

作者：

Abelev, B. I.

Aggarwal, M. M. ^{[30
]}

Ahammed, Z. ^{[47
]}

Anderson, B. D. ^{[17
]}

Arkhipkin, D. ^{[11
]}

Averichev, G. S. ^{[10
]}

Bai, Y. ^{[26
,27
]}

Balewski, J. ^{[21
,50
]}

Barannikova, O. ^{[7
]}

Barnby, L. S. ^{[2
]}

Baudot, J. ^{[15
]}

Baumgart, S. ^{[52
]}

Beavis, D. R. ^{[3
]}

Bellwied, R.

Benedosso, F.

Betts, R. R. ^{[7
]}

Bhardwaj, S. ^{[35
]}

Bhasin, A. ^{[16
]}

Bhati, A. K. ^{[30
]}

Bichsel, H. ^{[49
]}

Bielcik, J. ^{[9
]}

Bielcikova, J. ^{[9
]}

Biritz, B. ^{[5
]}

Bland, L. C. ^{[3
]}

Bombara, M. ^{[2
]}

Bonner, B. E. ^{[36
]}

Botje, M. ^{[26
,27
]}

Bouchet, J. ^{[17
]}

Braidot, E. ^{[26
,27
]}

Brandin, A. V. ^{[24
]}

Bueltmann, S. ^{[29
]}

Burton, T. P. ^{[2
]}

Bystersky, M. ^{[9
]}

Cai, X. Z. ^{[40
]}

Caines, H.

Sanchez, M. Calderon de la Barca ^{[4
]}

Callner, J. ^{[7
]}

Catu, O. ^{[52
]}

Cebra, D. ^{[4
]}

Cendejas, R. ^{[5
]}

Cervantes, M. C. ^{[42
]}

Chajecki, Z. ^{[28
]}

Chaloupka, P.

Chattopadhyay, S. ^{[47
]}

Chen, H. F. ^{[38
,44
,51
]}

Chen, J. H.

Chen, J. Y. ^{[17
]}

Cheng, J.

Cherney, M. ^{[8
]}

Chikanian, A. ^{[52
]}

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

[2] Univ Birmingham, Birmingham, W Midlands, England

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

[4] Univ Calif Davis, Davis, CA 95616 USA

[5] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[6] Univ Estadual Campinas, Sao Paulo, Brazil

[7] Univ Illinois, Chicago, IL 60607 USA

[8] Creighton Univ, Omaha, NE 68178 USA

[9] AS CR, Inst Nucl Phys, Rez 25068, Czech Republic

[10] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia

[11] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia

[12] Inst Phys, Bhubaneswar 751005, Orissa, India

[13] Indian Inst Technol, Bombay 400076, Maharashtra, India

[14] Indiana Univ, Bloomington, IN 47408 USA

[15] Inst Rech Subatom, Strasbourg, France

[16] Univ Jammu, Jammu 180001, India

[17] Kent State Univ, Kent, OH 44242 USA

[18] Univ Kentucky, Lexington, KY 40506 USA

[19] Inst Modern Phys, Lanzhou, Peoples R China

[20] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[21] MIT, Cambridge, MA 02139 USA

[22] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[23] Michigan State Univ, E Lansing, MI 48824 USA

[24] Moscow Engn Phys Inst, Moscow 115409, Russia

[25] CUNY City Coll, New York, NY 10031 USA

[26] NIKHEF, Amsterdam, Netherlands

[27] Univ Utrecht, Amsterdam, Netherlands

[28] Ohio State Univ, Columbus, OH 43210 USA

[29] Old Dominion Univ, Norfolk, VA 23529 USA

[30] Panjab Univ, Chandigarh 160014, India

[31] Penn State Univ, University Pk, PA 16802 USA

[32] Inst High Energy Phys, Protvino, Russia

[33] Purdue Univ, W Lafayette, IN 47907 USA

[34] Pusan Natl Univ, Pusan 609735, South Korea

[35] Univ Rajasthan, Jaipur 302004, Rajasthan, India

[36] Rice Univ, Houston, TX 77251 USA

[37] Univ Sao Paulo, Sao Paulo, Brazil

[38] Univ Sci & Technol China, Hefei 230026, Peoples R China

[39] Shandong Univ, Jinan 250100, Shandong, Peoples R China

[40] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[41] SUBATECH, Nantes, France

[42] Texas A&M Univ, College Stn, TX 77843 USA

[43] Univ Texas Austin, Austin, TX 78712 USA

[44] Tsinghua Univ, Beijing 100084, Peoples R China

[45] USN Acad, Annapolis, MD 21402 USA

[46] Valparaiso Univ, Valparaiso, IN 46383 USA

[47] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, India

[48] Warsaw Univ Technol, Warsaw, Poland

[49] Univ Washington, Seattle, WA 98195 USA

[50] Wayne State Univ, Detroit, MI 48201 USA

来源：

PHYSICAL REVIEW C | 2009年 / 79卷 / 02期

基金：

巴西圣保罗研究基金会; 英国工程与自然科学研究理事会;

关键词：

MEAN TRANSVERSE-MOMENTUM; BY-EVENT FLUCTUATIONS; HEAVY-ION COLLISIONS; NUCLEAR COLLISIONS; PARTICLE; MULTIPLICITY; SIGNAL; GEV/C;

D O I：

10.1103/PhysRevC.79.024906

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：

We present measurements of net charge fluctuations in Au+Au collisions at s(NN)=19.6, 62.4, 130, and 200 GeV, Cu+Cu collisions at s(NN)=62.4 and 200 GeV, and p+p collisions at s=200 GeV using the dynamical net charge fluctuations measure nu(+-,dyn). We observe that the dynamical fluctuations are nonzero at all energies and exhibit a modest dependence on beam energy. A weak system size dependence is also observed. We examine the collision centrality dependence of the net charge fluctuations and find that dynamical net charge fluctuations violate 1/N-ch scaling but display approximate 1/N-part scaling. We also study the azimuthal and rapidity dependence of the net charge correlation strength and observe strong dependence on the azimuthal angular range and pseudorapidity widths integrated to measure the correlation.

引用

页数：14

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