Centrality dependence of charged-hadron transverse-momentum spectra in d+Au collisions at √sNN=200 GeV -: art. no. 072302

被引：217

作者：

Back, BB

Baker, MD

Ballintijn, M

Barton, DS

Becker, B

Betts, RR

Bickley, AA

Bindel, R

Budzanowski, A

Busza, W

Carroll, A

Decowski, MP

García, E

Gburek, T

George, N

Gulbrandsen, K

Gushue, S

Halliwell, C

Hamblen, J

Harrington, AS

Henderson, C

Hofman, DJ

Hollis, RS

Holynski, R

Holzman, B

Iordanova, A

Johnson, E

Kane, JL

Khan, N

Kulinich, P

Kuo, CM

Lee, JW

Lin, WT

Manly, S

Mignerey, AC

Noell, A

Nouicer, R

Olszewski, A

Pak, R

Park, IC

Pernegger, H

Reed, C

Remsberg, LP

Roland, C

Roland, G

Sagerer, J

Sarin, P

Sawicki, P

Sedykh, I

Skulski, W

机构：

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

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

[3] Inst Nucl Phys, Krakow, Poland

[4] MIT, Cambridge, MA 02139 USA

[5] Natl Cent Univ, Chungli 32054, Taiwan

[6] Univ Illinois, Chicago, IL 60607 USA

[7] Univ Maryland, College Pk, MD 20742 USA

[8] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.91.072302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured transverse momentum distributions of charged hadrons produced in d+Au collisions at roots(NN)=200 GeV. The spectra were obtained for transverse momenta 0.25<p(T)<6.0 GeV/c, in a pseudorapidity range of 0.2<eta<1.4 in the deuteron direction. The evolution of the spectra with collision centrality is presented in comparison to p+(p) over bar collisions at the same collision energy. With increasing centrality, the yield at high transverse momenta increases more rapidly than the overall particle density, leading to a strong modification of the spectral shape. This change in spectral shape is qualitatively different from observations in Au+Au collisions at the same energy. The results provide important information for discriminating between different models for the suppression of high-p(T) hadrons observed in Au+Au collisions.

引用

页数：4

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