Incident energy dependence of pt correlations at relativistic energies -: art. no. 044902

被引：92

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

Bonner, BE

Botje, M

Boucham, A

Bouchet, J

Brandin, AV

Bravar, A

Bystersky, M

Cadman, RV

Cai, XZ

Caines, H

Sánchez, MCDB

Castillo, J

Catu, O

Cebra, D

Chajecki, Z

Chaloupka, P

Chattopadhyay, S

Chen, HF

Chen, Y

Cheng, J

Cherney, M

机构：

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

[2] Univ Bern, CH-3012 Bern, Switzerland

[3] Univ Birmingham, Birmingham, 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 Republic, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[12] Lab High Energy, Dubna, Russia

[13] 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, D-80805 Munich, Germany

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

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

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

[27] NIKHEF H, 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] Univ Rajasthan, Jaipur 302004, Rajasthan, India

[35] Rice Univ, Houston, TX 77251 USA

[36] Univ Sao Paulo, Sao Paulo, Brazil

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

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

[39] SUBATECH, Nantes, France

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

[41] Univ Texas, Austin, TX 78712 USA

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

[43] Valparaiso Univ, Valparaiso, IN 46383 USA

[44] Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India

[45] Warsaw Univ Technol, Warsaw, Poland

[46] Univ Washington, Seattle, WA 98195 USA

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

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

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

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

来源：

PHYSICAL REVIEW C | 2005年 / 72卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.72.044902

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 results for two-particle transverse momentum correlations, <Delta p(t,i)Delta p(t,j)>, as a function of event centrality for Au+Au collisions at root SNN = 20, 62, 130, and 200 GeV at the BNL Relativistic Heavy Ion Collider. We observe correlations decreasing with centrality that are similar at all four incident energies. The correlations multiplied by the multiplicity density increase with incident energy, and the centrality dependence may show evidence of processes such as thermalization, jet production, or the saturation of transverse flow. The square root of the correlations divided by the event-wise average transverse momentum per event shows little or no beam energy dependence and generally agrees with previous measurements made at the CERN Super Proton Synchrotron.

引用

页数：6

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