Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at √SNN=200 GeV -: art. no. 152301

被引：457

作者：

Adams, J ^{[1
]}

Adler, C

Aggarwal, MM

Ahammed, Z

Amonett, J

Anderson, BD

Arkhipkin, D

Averichev, GS

Badyal, SK

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Bekele, S

Belaga, VV

Bellwied, R

Berger, J

Bezverkhny, BI

Bhardwaj, S

Bhati, AK

Bichsel, H

Billmeier, A

Bland, LC

Blyth, CO

Bonner, BE

Botje, M

Boucham, A

Brandin, A

Bravar, A

Cadman, RV

Cai, XZ

Caines, H

Sánchez, MCDB

Carroll, J

Castillo, J

Cebra, D

Chaloupka, P

Chattopadhyay, S

Chen, HF

Chen, Y

Chernenko, SP

Cherney, M

Chikanian, A

Christie, W

Coffin, JP

Cormier, TM

Cramer, JG

Crawford, HJ

Das, D

Das, S

机构：

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

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

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

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

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

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

[7] CALTECH, Pasadena, CA 91125 USA

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

[9] Creighton Univ, Omaha, NE 68178 USA

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

[11] JINR, High Energy Lab, Dubna, Russia

[12] JINR, Particle Phys Lab, Dubna, Russia

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

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

[15] Indiana Univ, Bloomington, IN 47408 USA

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

[17] Inst Rech Subatom, Strasbourg, France

[18] Univ Jammu, Jammu 180001, India

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

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

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

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

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

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

[25] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

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

[27] Panjab Univ, Chandigarh 160014, India

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

[29] Protvino High Energy Phys Inst, Protvino 142284, Russia

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

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

[32] Rice Univ, Houston, TX 77251 USA

[33] Univ Sao Paulo, Sao Paulo, Brazil

[34] Univ Sci & Technol China, Anhua 230027, Peoples R China

[35] Shanghai Inst Nucl Res, Shanghai 201800, Peoples R China

[36] SUBATECH, Nantes, France

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

[38] Univ Texas, Austin, TX 78712 USA

[39] Valparaiso Univ, Valparaiso, IN 46383 USA

[40] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India

[41] Warsaw Univ Technol, Warsaw, Poland

[42] Univ Washington, Seattle, WA 98195 USA

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

[44] Hua Zhong Normal Univ, Inst Particle Phys, CCNU, Wuhan 430079, Peoples R China

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

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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.95.152301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Charged hadrons in 0.15 < p(perpendicular to)< 4 GeV/c associated with particles of p(perpendicular to)(trig)> 4 GeV/c are reconstructed in pp and Au+Au collisions at root s(NN)=200 GeV. The associated multiplicity and p(perpendicular to) magnitude sum are found to increase from pp to central Au+Au collisions. The associated p(perpendicular to) distributions, while similar in shape on the nearside, are significantly softened on the awayside in central Au+Au relative to pp and not much harder than that of inclusive hadrons. The results, consistent with jet quenching, suggest that the awayside fragments approach equilibration with the medium traversed.

引用

页数：6

共 32 条

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