Hadronization geometry from net-charge angular correlations on momentum subspace (η, φ) in Au-Au collisions at √SNN=130 GeV

被引:31
作者
Adams, J
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Arkhipkin, D
Averichev, GS
Badyal, SK
Bai, Y
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellingeri-Laurikainen, A
Bellwied, R
Berger, J
Bezverkhny, BI
Bharadwaj, S
Bhasin, A
Bhati, AK
Bhatia, VS
Bichsel, H
Bielcik, J
Bielcikova, J
Billmeier, A
Bland, LC
Blyth, CO
Blyth, SL
Bonner, BE
Botje, M
Boucham, A
Bouchet, J
Brandin, AV
Bravar, A
Bystersky, M
Cadman, RV
Cai, XZ
Caines, H
Sánchez, MCD
Castillo, J
Catu, O
Cebra, D
Chajecki, Z
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, Y
机构
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Univ Bern, CH-3012 Bern, Switzerland
[3] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[4] Brookhaven Natl Lab, Upton, NY 11973 USA
[5] CALTECH, Pasadena, CA 91125 USA
[6] Univ Calif Berkeley, Berkeley, CA 94720 USA
[7] Univ Calif Davis, Davis, CA 95616 USA
[8] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
[9] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[10] Creighton Univ, Omaha, NE 68178 USA
[11] Acad Sci Czech Republ, Inst Phys Nucl, Prague 25068, Czech Republic
[12] JINR, Lab High Energy, Dubna, Russia
[13] JINR, Particle Phys Lab, Dubna, Russia
[14] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany
[15] Inst Phys, Bhubaneswar 751005, Orissa, India
[16] Indian Inst Technol, Bombay 400076, Maharashtra, India
[17] Indiana Univ, Bloomington, IN 47408 USA
[18] Inst Rech Subatom, Strasbourg, France
[19] Univ Jammu, Jammu 180001, India
[20] Kent State Univ, Kent, OH 44242 USA
[21] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[22] MIT, Cambridge, MA 02139 USA
[23] Max Planck Inst Phys & Astrophys, Munich, Germany
[24] Michigan State Univ, E Lansing, MI 48824 USA
[25] Moscow Engn Phys Inst, Moscow 115409, Russia
[26] CUNY, New York, NY 10031 USA
[27] NIKHEF, Amsterdam, Netherlands
[28] Univ Utrecht, Amsterdam, Netherlands
[29] Ohio State Univ, Columbus, OH 43210 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 230027, Anhui, Peoples R China
[39] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[40] SUBATECH, Nantes, France
[41] Texas A&M Univ, College Stn, TX 77843 USA
[42] Univ Texas, Austin, TX 78712 USA
[43] Tsinghua Univ, Beijing 100084, Peoples R China
[44] Valparaiso Univ, Valparaiso, IN 46383 USA
[45] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India
[46] Warsaw Univ Technol, Warsaw, Poland
[47] Univ Washington, Seattle, WA 98195 USA
[48] Wayne State Univ, Detroit, MI 48201 USA
[49] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China
[50] Yale Univ, New Haven, CT 06520 USA
基金
英国工程与自然科学研究理事会; 美国国家科学基金会; 巴西圣保罗研究基金会; 中国国家自然科学基金;
关键词
net-charge correlations; net-charge fluctuations; hadronization; heavy ion collisions;
D O I
10.1016/j.physletb.2006.01.061
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the first measurements of charge-dependent correlations on angular difference variables eta(1) - eta(2) (pseudorapidity) and phi(1) - phi(2) (azimuth) for primary charged hadrons with transverse momentum 0.15 <= p(t) <= 2 GeV/c and vertical bar eta vertical bar <= 1.3 from Au-Au collisions at root(s)NN = 130 GeV. We observe correlation structures not predicted by theory but consistent with evolution of hadron emission geometry with increasing centrality from one-dimensional fragmentation of color strings along the beam direction to an at least two-dimensional hadronization geometry along the beam and azimuth directions of a hadron-opaque bulk medium. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:347 / 355
页数:9
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