Disappearance of back-to-back high-pT hadron correlations in central Au+Au collisions at √sNN=200 GeV -: art. no. 082302

被引：636

作者：

Adler, C ^{[1
]}

Ahammed, Z

Allgower, C

Amonett, J

Anderson, BD

Anderson, M

Averichev, GS

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Bekele, S

Belaga, VV

Bellwied, R

Berger, J

Bichsel, H

Billmeier, A

Bland, LC

Blyth, CO

Bonner, BE

Boucham, A

Brandin, A

Bravar, A

Cadman, RV

Caines, H

Sánchez, MCD

Cardenas, A

Carroll, J

Castillo, J

Castro, M

Cebra, D

Chaloupka, P

Chattopadhyay, S

Chen, Y

Chernenko, SP

Cherney, M

Chikanian, A

Choi, B

Christie, W

Coffin, JP

Cormier, TM

Corral, MM

Cramer, JG

Crawford, HJ

Derevschikov, AA

Didenko, L

Dietel, T

Draper, JE

Dunin, VB

Dunlop, JC

机构：

[1] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany

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

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

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

[5] Univ Calif Berkeley, Berkeley, CA 94720 USA

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

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

[8] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[9] Creighton Univ, Omaha, NE 68178 USA

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

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

[12] Indiana Univ, Bloomington, IN 47408 USA

[13] Inst Rech Subatom, Strasbourg, France

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

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

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

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

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

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

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

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

[22] Inst High Energy Phys, Protvino, Russia

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

[24] Rice Univ, Houston, TX 77251 USA

[25] Univ Sao Paulo, Sao Paulo, Brazil

[26] SUBATECH, Nantes, France

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

[28] Univ Texas, Austin, TX 78712 USA

[29] Warsaw Univ Technol, Warsaw, Poland

[30] Univ Washington, Seattle, WA 98195 USA

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

[32] Hua Zhong Normal Univ, Inst Particle Phys, CCNU, Wuhan 430070, Peoples R China

[33] Yale Univ, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.90.082302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudorapidity range and full azimuth in Au+Au and p+p collisions at roots(NN)=200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes previously observed in high-energy collisions. A strong back-to-back correlation exists for p+p and peripheral Au+Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.

引用

页码：6 / 082302

页数：6

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