Scaling properties of proton and antiproton production in √sNN=200 GeV Au+Au collisions -: art. no. 172301

被引：204

作者：

Adler, SS

Afanasiev, S

Aidala, C

Ajitanand, NN

Akiba, Y

Alexander, J

Amirikas, R

Aphecetche, L

Aronson, SH

Averbeck, R

Awes, TC

Azmoun, R

Babintsev, V

Baldisseri, A

Barish, KN

Barnes, PD

Bassalleck, B

Bathe, S

Batsouli, S

Baublis, V

Bazilevsky, A

Belikov, S

Berdnikov, Y

Bhagavatula, S

Boissevain, JG

Borel, H

Borenstein, S

Brooks, ML

Brown, DS

Bruner, N

Bucher, D

Buesching, H

Bumazhnov, V

Bunce, G

Burward-Hoy, JM

Butsyk, S

Camard, X

Chai, JS

Chand, P

Chang, WC

Chernichenko, S

Chi, CY

Chiba, J

Chiu, M

Choi, IJ

Choi, J

Choudhury, RK

Chujo, T

Cianciolo, V

Cobigo, Y

机构：

[1] Columbia Univ, New York, NY 10027 USA

[2] Abilene Christian Univ, Abilene, TX 79699 USA

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

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

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

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

[7] Univ Calif Riverside, Riverside, CA 92521 USA

[8] China Inst Atom Energy, Beijing, Peoples R China

[9] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan

[10] Nevis Labs, Irvington, NY 10533 USA

[11] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France

[12] Univ Debrecen, H-4010 Debrecen, Hungary

[13] Florida State Univ, Tallahassee, FL 32306 USA

[14] Georgia State Univ, Atlanta, GA 30303 USA

[15] Hiroshima Univ, Higashihiroshima 7398526, Japan

[16] Inst High Energy Phys, Protvino, Russia

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

[18] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[19] Cyclotron Applicat Lab, KAERI, Seoul, South Korea

[20] Kangnung Natl Univ, Kangnung 210702, South Korea

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

[22] KFKI, Res Inst Particle & Nucl Phys RMKI, H-1525 Budapest, Hungary

[23] Korea Univ, Seoul 136701, South Korea

[24] Russian Res Ctr, Kurchatov Inst, Moscow, Russia

[25] Kyoto Univ, Kyoto 606, Japan

[26] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[27] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[28] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[29] Univ Clermont Ferrand, CNRS, IN2P3, LPC, F-61377 Aubiere, France

[30] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[31] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[32] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan

[33] Univ New Mexico, Albuquerque, NM 87131 USA

[34] New Mexico State Univ, Las Cruces, NM 88003 USA

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

[36] Univ Paris 11, IPN Orsay, CNRS, IN2P3, F-91406 Orsay, France

[37] Petersburg Nucl Phys Inst, Gatchina, Russia

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

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

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

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

[42] Seoul Natl Univ, Syst Elect Lab, Seoul, South Korea

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

[44] SUNY Stony Brook, Dept Phys & Auton, Stony Brook, NY 11794 USA

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

[46] Univ Tennessee, Knoxville, TN 37996 USA

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

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

[49] Vanderbilt Univ, Nashville, TN 37235 USA

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

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.91.172301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at rootS(NN)=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider. In central collisions at intermediate transverse momenta (1.5<p(T)<4.5 GeV/c) a significant fraction of all produced particles are protons and antiprotons. They show a centrality-scaling behavior different from that of pions. The (p) over bar/pi and p/pi ratios are enhanced compared to peripheral Au+Au, p+p, and e(+)e(-) collisions. This enhancement is limited to p(T)<5 GeV/c as deduced from the ratio of charged hadrons to pi(0) measured in the range 1.5<p(T)<9 GeV/c.

引用

页数：6

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