Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics

被引：173

作者：

Adams, J ^{[1
]}

Adler, C

Aggarwal, MM

Ahammed, Z

Amonett, J

Anderson, BD

Anderson, M

Arkhipkin, D

Averichev, GS

Badyal, SK

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Bekele, S

Belaga, VV

Bellwied, R

Berger, J

Bezverkhny, BI

Bhardwaj, S

Bhaskar, P

Bhati, AK

Bichsel, H

Billmeier, A

Bland, LC

Blyth, CO

Bonner, BE

Botje, M

Boucham, A

Brandin, A

Bravar, A

Cadman, RV

Cai, XZ

Caines, H

S nchez, MCD

Carroll, J

Castillo, J

Castro, M

Cebra, D

Chaloupka, P

Chattopadhyay, S

Chen, HF

Chen, Y

Chernenko, SP

Cherney, M

Chikanian, A

Choi, B

Christie, W

Coffin, JP

Cormier, TM

机构：

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

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

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

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

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

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

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

[8] Creighton Univ, Omaha, NE 68178 USA

[9] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, 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] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany

[13] Indiana Univ, Bloomington, IN 47408 USA

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

[15] Inst Rech Subatom, Strasbourg, France

[16] Univ Jammu, Jammu 180001, India

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

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

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

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

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

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

[23] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

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

[25] Panjab Univ, Chandigarh 160014, India

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

[27] Inst High Energy Phys, Protvino, Russia

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

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

[30] Rice Univ, Houston, TX 77251 USA

[31] Univ Sao Paulo, Sao Paulo, Brazil

[32] Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China

[33] Acad Sinica, Shanghai Inst Nucl Res, Shanghai 201800, Peoples R China

[34] SUBATECH, Nantes, France

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

[36] Univ Texas, Austin, TX 78712 USA

[37] Valparaiso Univ, Valparaiso, IN 46383 USA

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

[39] Warsaw Univ Technol, Warsaw, Poland

[40] Univ Washington, Seattle, WA 98195 USA

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

[42] HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China

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

[44] Univ Zagreb, HR-10002 Zagreb, Croatia

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.92.062301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observations of the first harmonic (directed flow, v(1)) and the fourth harmonic (v(4)), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v(2)) generated at RHIC. From the correlation of v(2) with v(1) it is determined that v(2) is positive, or in-plane. The integrated v(4) is about a factor of 10 smaller than v(2). For the sixth (v(6)) and eighth (v(8)) harmonics upper limits on the magnitudes are reported.

引用

页数：6

共 32 条

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