Pseudorapidity asymmetry and centrality dependence of charged hadron spectra in d+Au collisions at √sNN=200 GeV -: art. no. 064907

被引：35

作者：

Adams, J ^{[1
]}

Aggarwal, MM

Ahammed, Z

Amonett, J

Anderson, BD

Arkhipkin, D

Averichev, GS

Bai, Y

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Bekele, S

Belaga, VV

Bellwied, R

Berger, J

Bezverkhny, BI

Bharadwaj, S

Bhasin, A

Bhati, AK

Bhatia, VS

Bichsel, H

Billmeier, A

Bland, LC

Blyth, CO

Bonner, BE

Botje, M

Boucham, A

Brandin, AV

Bravar, A

Bystersky, M

Cadman, RV

Cai, XZ

Caines, H

Sánchez, MCD

Castillo, J

Cebra, D

Chajecki, Z

Chaloupka, P

Chattopdhyay, S

Chen, HF

Chen, Y

Cheng, J

Cherney, M

Chikanian, A

Christie, W

Coffin, JP

Cormier, TM

Cramer, JG

Crawford, HJ

机构：

[1] Univ Birmingham, Birmingham, W Midlands, England

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

[3] Univ Bern, CH-3012 Bern, Switzerland

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

[5] CALTECH, Pasadena, CA 91125 USA

[6] Univ Calif Berkeley, Berkeley, CA 94720 USA

[7] Univ Calif Davis, Davis, CA 95616 USA

[8] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[9] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[10] Creighton Univ, Omaha, NE 68178 USA

[11] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[12] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia

[13] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia

[14] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany

[15] Inst Phys, Bhubaneswar 751005, Orissa, India

[16] Indian Inst Technol, Bombay 400076, Maharashtra, India

[17] Indiana Univ, Bloomington, IN 47408 USA

[18] Inst Rech Subatom, Strasbourg, France

[19] Univ Jammu, Jammu 180001, India

[20] Kent State Univ, Kent, OH 44242 USA

[21] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[22] MIT, Cambridge, MA 02139 USA

[23] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[24] Michigan State Univ, E Lansing, MI 48824 USA

[25] Moscow Engn Phys Inst, Moscow 115409, Russia

[26] CUNY City Coll, New York, NY 10031 USA

[27] NIKHEF, Amsterdam, Netherlands

[28] Ohio State Univ, Columbus, OH 43210 USA

[29] Panjab Univ, Chandigarh 160014, India

[30] Penn State Univ, University Pk, PA 16802 USA

[31] Inst High Energy Phys, Protvino, Russia

[32] Purdue Univ, W Lafayette, IN 47907 USA

[33] Univ Rajasthan, Jaipur 302004, Rajasthan, India

[34] Rice Univ, Houston, TX 77251 USA

[35] Univ Sao Paulo, Sao Paulo, Brazil

[36] Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China

[37] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[38] SUBATECH, Nantes, France

[39] Texas A&M Univ, College Stn, TX 77843 USA

[40] Univ Texas, Austin, TX 78712 USA

[41] Tsinghua Univ, Beijing 100084, Peoples R China

[42] Valparaiso Univ, Valparaiso, IN 46383 USA

[43] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, India

[44] Warsaw Univ Technol, Warsaw, Poland

[45] Univ Washington, Seattle, WA 98195 USA

[46] Wayne State Univ, Detroit, MI 48201 USA

[47] HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China

[48] Yale Univ, New Haven, CT 06520 USA

[49] Univ Zagreb, HR-10002 Zagreb, Croatia

来源：

PHYSICAL REVIEW C | 2004年 / 70卷 / 06期

基金：

中国国家自然科学基金; 巴西圣保罗研究基金会; 英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevC.70.064907

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The pseudorapidity asymmetry and centrality dependence of charged hadron spectra in d+Au collisions at roots(NN)=200 GeV are presented. The charged particle density at midrapidity, its pseudorapidity asymmetry, and centrality dependence are reasonably reproduced by a multiphase transport model, by HIJING, and by the latest calculations in a saturation model. Ratios of transverse momentum spectra between backward and forward pseudorapidity are above unity for p(T) below 5 GeV/c. The ratio of central to peripheral spectra in d+Au collisions shows enhancement at 2<p(T)<6 GeV/c, with a larger effect at backward rapidity than forward rapidity. Our measurements are in qualitative agreement with gluon saturation and in contrast to calculations based on incoherent multiple partonic scatterings.

引用

页码：064907 / 1

页数：7

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