Measurements of transverse energy distributions in Au plus Au collisions at √sNN=200 GeV -: art. no. 054907

被引：68

作者：

Adams, J ^{[1
]}

Aggarwal, MM

Ahammed, Z

Amonett, J

Anderson, BD

Arkhipkin, D

Averichev, GS

Bai, Y

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Bekele, S

Belaga, VV

Bellwied, R

Berger, J

Bezverkhny, BI

Bharadwaj, S

Bhatia, VS

Bichsel, H

Billmeier, A

Bland, LC

Blyth, CO

Bonner, BE

Botje, M

Boucham, A

Brandin, A

Bravar, A

Bystersky, M

Cadman, RV

Cai, XZ

Caines, H

Sánchez, MCD

Carroll, J

Castillo, J

Cebra, D

Chajecki, Z

Chaloupka, P

Chattopdhyay, S

Chen, HF

Chen, Y

Cheng, J

Cherney, M

Chikanian, A

Christie, W

Coffin, JP

Cormier, TM

Cramer, JG

Crawford, HJ

Das, D

机构：

[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

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

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

[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 Nucl Phys, CZ-25068 Rez, Czech Republic

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

[13] Joint Inst Nucl Res Dubna, 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 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, NL-1009 DB Amsterdam, Netherlands

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

[29] Panjab Univ, Chandigarh 160014, India

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

[31] Inst High Energy Phys, Protvino, Russia

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

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

[34] Rice Univ, Houston, TX 77251 USA

[35] Univ Sao Paulo, BR-05508 Sao Paulo, Brazil

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

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

[38] SUBATECH, Nantes, France

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

[40] Univ Texas, Austin, TX 78712 USA

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

[42] Valparaiso Univ, Valparaiso, IN 46383 USA

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

[44] Warsaw Univ Technol, PL-00661 Warsaw, Poland

[45] Univ Washington, Seattle, WA 98195 USA

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

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

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

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

来源：

PHYSICAL REVIEW C | 2004年 / 70卷 / 05期

基金：

中国国家自然科学基金; 巴西圣保罗研究基金会; 英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevC.70.054907

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：

Transverse energy (ET) distributions have been measured for Au+Au collisions at roots(NN)=200 GeV by the STAR Collaboration at RHIC. E-T is constructed from its hadronic and electromagnetic components, which have been measured separately. ET production for the most central collisions is well described by several theoretical models whose common feature is large energy density achieved early in the fireball evolution. The magnitude and centrality dependence of ET per charged particle agrees well with measurements at lower collision energy, indicating that the growth in ET for larger collision energy results from the growth in particle production. The electromagnetic fraction of the total ET is consistent with a final state dominated by mesons and independent of centrality.

引用

页码：054907 / 1

页数：14

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