Energy dependence of particle multiplicities in central Au+Au collisions -: art. no. 022302

被引：128

作者：

Back, BB ^{[1
]}

Baker, MD

Barton, DS

Betts, RR

Bindel, R

Budzanowski, A

Busza, W

Carroll, A

Corbo, J

Decowski, MP

Garcia, E

George, N

Gulbrandsen, K

Gushue, S

Halliwell, C

Hamblen, J

Henderson, C

Hicks, D

Hofman, D

Hollis, RS

Holynski, R

Holzman, B

Iordanova, A

Johnson, E

Kane, J

Katzy, J

Khan, N

Kucewicz, W

Kulinich, P

Kuo, CM

Lin, WT

Manly, S

McLeod, D

Michalowski, J

Mignerey, A

Mülmenstädt, J

Nouicer, R

Olszewski, A

Pak, R

Park, IC

Pernegger, H

Rafelski, M

Rbeiz, M

Reed, C

Remsberg, LP

Reuter, M

Roland, C

Roland, G

Rosenberg, L

Sagerer, J

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

[3] Brookhaven Natl Lab, CA Dept, Upton, NY 11973 USA

[4] Inst Nucl Phys, Krakow, Poland

[5] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[6] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan

[7] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[8] Univ Maryland, Dept Chem, College Pk, MD 20742 USA

[9] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.88.022302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first measurement of the pseudorapidity density of primary charged particles in Au + Au collisions at roots(NN) = 200 GeV. For the 6% most central collisions, we obtain dN(ch)/deta\(\eta\<1) = 650 +/- 35(syst). Compared to collisions at √S-NN = 130 GeV, the highest energy studied previously, an increase by a factor of 1.14 +/- 0.05 at 90% confidence level, is found. The energy dependence of the pseudorapidity density is discussed in comparison with data from proton-induced collisions and theoretical predictions.

引用

页数：4

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