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

来源：

PHYSICS LETTERS B | 2006年 / 634卷 / 04期

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

页码：347 / 355

页数：9

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