Centrality dependence of π±, K±, p, and (p)over-bar production from √SNN = 130 GeV Au+Au collisions at RHIC -: art. no. 242301

被引：258

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 37235 USA

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

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

[4] Brookhaven Natl Lab, 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, 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 Sci & Technol, Ames, IA 50011 USA

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

[17] Korea Univ, Seoul 136701, South Korea

[18] IV Kurchatov Atom Energy 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] 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] PNPI, Gatchina, Russia

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

[34] Brookhaven Natl Lab, RIKEN BNL Res CTr, Upton, NY 11973 USA

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

[36] Univ Nantes, Ecole Mines Nantes, IN2P3, CNRS,SUBATECH, F-44307 Nantes 3, France

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

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

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.88.242301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Identified pi(+/-), K+/-, p, and (p) over bar transverse momentum spectra at midrapidity in roots(NN) = 130 GeV Au + Au collisions were measured by the PHENIX experiment at RHIC as a function of collision centrality. Average transverse momenta increase with the number of participating nucleons in a similar way for all particle species. Within errors, all midrapidity particle yields per participant are found to be increasing with the number of participating nucleons. There is an indication that K+/-, p, and (p) over bar yields per participant increase faster than the pi(+/-) yields. In central collisions at high transverse momenta (p(T) greater than or similar to 2 GeV/c), (p) over bar and p yields are comparable to the pi(+/-) yields.

引用

页数：6

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