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
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.
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页数：4
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