Transverse momentum and centrality dependence of High-pT nonphotonic electron suppression in Au plus Au collisions at √SNN=200 GeV

被引：377
作者：
Abelev, B. I. [1 ]
Aggarwal, M. M.
Ahammed, Z.
Anderson, B. D.
Arkhipkin, D.
Averichev, G. S.
Bai, Y.
Balewski, J.
Barannikova, O.
Barnby, L. S.
Baudot, J.
Baumgart, S.
Belaga, V. V.
Bellingeri-Laurikainen, A.
Bellwied, R.
Benedosso, F.
Betts, R. R.
Bhardwaj, S.
Bhasin, A.
Bhati, A. K.
Bichsel, H.
Bielcik, J.
Bielcikova, J.
Bland, L. C.
Blyth, S-L.
Bombara, M.
Bonner, B. E.
Botje, M.
Bouchet, J.
Brandin, A. V.
Bravar, A.
Burton, T. P.
Bystersky, M.
Cadman, R. V.
Cai, X. Z.
Caines, H.
de la Barca Sanchez, M. Calderon
Callner, J.
Catu, O.
Cebra, D.
Chajecki, Z.
Chaloupka, P.
Chattopadhyay, S.
Chen, H. F.
Chen, J. H.
Chen, J. Y.
Cheng, J.
Cherney, M.
Chikanian, A.
Christie, W.
机构：
[1] Univ Illinois, Urbana, IL 61801 USA
[2] Argonne Natl Lab, Argonne, IL 60439 USA
[3] Univ Birmingham, Birmingham, W Midlands, England
[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] Nucl Phys Inst AS CR, CR-25068 Rez, Czech Republic
[12] JINR, Lab High Energy, Dubna, Russia
[13] JINR, 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] Inst Modern Phys, Lanzhou, Peoples R China
[22] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[23] MIT, Cambridge, MA 02139 USA
[24] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[25] Michigan State Univ, E Lansing, MI 48824 USA
[26] Moscow Engn Phys Inst, Moscow 115409, Russia
[27] CUNY City Coll, New York, NY 10031 USA
[28] NIKHEF, Amsterdam, Netherlands
[29] Univ Utrecht, Amsterdam, Netherlands
[30] Ohio State Univ, Columbus, OH 43210 USA
[31] Panjab Univ, Chandigarh 160014, India
[32] Penn State Univ, University Pk, PA 16802 USA
[33] Inst High Energy Phys, Protvino, Russia
[34] Purdue Univ, W Lafayette, IN 47907 USA
[35] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[36] Pusan Natl Univ, Pusan 609735, South Korea
[37] Rice Univ, Houston, TX 77251 USA
[38] Univ Sao Paulo, Sao Paulo, Brazil
[39] Univ Sci & Technol China, Hefei 230026, Peoples R China
[40] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[41] SUBATECH, Nantes, France
[42] Texas A&M Univ, College Stn, TX 77843 USA
[43] Univ Texas, Austin, TX 78712 USA
[44] Tsinghua Univ, Beijing 100084, Peoples R China
[45] Valparaiso Univ, Valparaiso, IN 46383 USA
[46] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India
[47] Warsaw Univ Technol, Warsaw, Poland
[48] Univ Washington, Seattle, WA 98195 USA
[49] Wayne State Univ, Detroit, MI 48201 USA
[50] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 19期
关键词：
D O I：
10.1103/PhysRevLett.98.192301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The STAR collaboration at the BNL Relativistic Heavy-Ion Collider (RHIC) reports measurements of the inclusive yield of nonphotonic electrons, which arise dominantly from semileptonic decays of heavy flavor mesons, over a broad range of transverse momenta (1.2 < p(T)< 10 GeV/c) in p+p, d+Au, and Au+Au collisions at root s(NN)=200 GeV. The nonphotonic electron yield exhibits an unexpectedly large suppression in central Au+Au collisions at high p(T), suggesting substantial heavy-quark energy loss at RHIC. The centrality and p(T) dependences of the suppression provide constraints on theoretical models of suppression.
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