Single identified hadron spectra from √sNN=130 GeVAu+Au collisions -: art. no. 024904

被引：165

作者：

Adcox, K

Adler, SS

Ajitanand, NN

Akiba, Y

Alexander, J

Aphecetche, L

Arai, Y

Aronson, SH

Averbeck, R

Awes, TC

Barish, KN

Bames, RD

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, JM

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 37235 USA

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[4] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

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

[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] McGill Univ, Montreal, PQ H3A 2T8, Canada

[13] Hiroshima Univ, Higashihiroshima 7398526, Japan

[14] Inst High Energy Phys, Protvino, Russia

[15] Iowa State Univ, Ames, IA 50011 USA

[16] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[17] Korea Univ, Seoul 136701, South Korea

[18] Kurchatov Inst, Russian Res Ctr, 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] Georgia State Univ, Atlanta, GA 30303 USA

[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] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[30] PNPI, Gatchina, Russia

[31] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[32] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[33] St Petersburg State Tech Univ, St Petersburg, Russia

[34] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[35] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[36] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[37] Univ Nantes, CNRS, IN2P3, SUBATECH,Secol Mines Nantes, F-44307 Nantes, France

[38] Univ Tennessee, Knoxville, TN 37996 USA

[39] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[40] Univ Tokyo, Tokyo, Japan

[41] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

[42] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1620044, Japan

[43] Weizmann Inst Sci, IL-76100 Rehovot, Israel

[44] Yonsei Univ, IPAP, Seoul 120749, South Korea

[45] KFKI Res Inst PArticle & Nucl Phys RMKI, Budapest, Hungary

来源：

PHYSICAL REVIEW C | 2004年 / 69卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.69.024904

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 momentum spectra and yields of hadrons are measured by the PHENIX collaboration in Au+Au collisions at roots(NN)=130 GeV at the Relativistic Heavy Ion Collider. The time-of-flight resolution allows identification of pions to transverse momenta of 2 GeV/c and protons and antiprotons to 4 GeV/c. The yield of pions rises approximately linearly with the number of nucleons participating in the collision, while the number of kaons, protons, and antiprotons increases more rapidly. The shape of the momentum distribution changes between peripheral and central collisions. Simultaneous analysis of all the p(T) spectra indicates radial collective expansion, consistent with predictions of hydrodynamic models. Hydrodynamic analysis of the spectra shows that the expansion velocity increases with collision centrality and collision energy. This expansion boosts the particle momenta, causing the yield from soft processes to exceed that for hard to large transverse momentum, perhaps as large as 3 GeV/c.

引用

页码：249041 / 2490429

页数：29

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