Measurement of the midrapidity transverse energy distribution from √SNN=130 GeV Au+Au collisions at RHIC -: art. no. 052301

被引:148
|
作者
Adcox, K
Adler, SS
Ajitanand, NN
Akiba, Y
Alexander, J
Aphecetche, L
Arai, Y
Aronson, SH
Averbeck, R
Awes, TC
Barish, KN
Barnes, PD
Barrette, J
Bassalleck, B
Bathe, S
Baublis, V
Bazilevsky, A
Belikov, S
Bellaiche, FG
Belyaev, ST
Bennett, MJ
Berdnikov, Y
Botelho, S
Brooks, ML
Brown, DS
Bruner, N
Bucher, D
Buesching, H
Bumazhnov, V
Bunce, G
Burward-Hoy, J
Butsyk, S
Carey, TA
Chand, P
Chang, J
Chang, WC
Chavez, LL
Chernichenko, S
Chi, CY
Chiba, J
Chiu, M
Choudhury, RK
Christ, T
Chujo, T
Chung, MS
Chung, P
Cianciolo, V
Cole, BA
D'Enterria, DG
David, G
机构
[1] Vanderbilt Univ, Nashville, TN 37232 USA
[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[3] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[4] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA
[5] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[6] Univ Calif Riverside, Riverside, CA 92521 USA
[7] China Inst Atom Energy, Beijing, Peoples R China
[8] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[9] Columbia Univ, New York, NY 10027 USA
[10] Nevis Labs, Irvington, NY 10533 USA
[11] Florida State Univ, Tallahassee, FL 32306 USA
[12] Georgia State Univ, Atlanta, GA 30303 USA
[13] Hiroshima Univ, Higashihiroshima 7398526, Japan
[14] Inst High Energy Phys, Protvino, Russia
[15] Iowa State Univ, Ames, IA 50011 USA
[16] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
[17] Korea Univ, Seoul 136701, South Korea
[18] Russian Res Ctr, Kurchatov Inst, Moscow, Russia
[19] Kyoto Univ, Kyoto 606, Japan
[20] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[21] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[22] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
[23] McGill Univ, Montreal, PQ H3A 2T8, Canada
[24] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[25] Myongji Univ, Yongin 449728, Kyonggido, South Korea
[26] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan
[27] Univ New Mexico, Albuquerque, NM 87131 USA
[28] New Mexico State Univ, Las Cruces, NM 88003 USA
[29] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
[30] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[31] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[32] Petersburg Nucl Phys Inst, Gatchina, Russia
[33] RIKEN, Wako, Saitama 3510198, Japan
[34] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
[35] Univ Nantes, Ecole Mines Nantes, SUBATECH, CNRS,IN2P3, F-44307 Nantes 3, France
[36] St Petersburg State Tech Univ, St Petersburg, Russia
[37] Univ Tennessee, Knoxville, TN 37996 USA
[38] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan
[39] Univ Tokyo, Tokyo, Japan
[40] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan
[41] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1620044, Japan
[42] Weizmann Inst Sci, IL-76100 Rehovot, Israel
[43] Yonsei Univ, IPAP, Seoul 120749, South Korea
[44] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary
关键词
D O I
10.1103/PhysRevLett.87.052301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The first measurement of energy produced transverse to the beam direction at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory is presented. The midrapidity transverse energy density per participating nucleon rises steadily with the number of participants, closely paralleling the rise in charged-particle density, such that (E-T)/(N-ch) remains relatively constant as a function of centrality. The energy density calculated via Bjorken's prescription for the 2% most central Au + Au collisions at rootS(NN) = 130 GeV is at least epsilon (Bj) = 4.6 GeV/fm(3), which is a factor of 1.6 larger than found at rootS(NN) = 17.2 GeV (Pb + Pb at CERN).
引用
收藏
页码:52301 / 1
页数:6
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