Cold-Nuclear-Matter Effects on Heavy-Quark Production at Forward and Backward Rapidity in d + Au Collisions at √sNN = GeV

被引:52
|
作者
Adare, A. [13 ]
Aidala, C. [40 ,44 ,45 ]
Ajitanand, N. N. [62 ]
Akiba, Y. [57 ,58 ]
Akimoto, R. [12 ]
Al-Bataineh, H. [51 ]
Al-Ta'ani, H. [51 ]
Alexander, J. [62 ]
Andrews, K. R. [1 ]
Angerami, A. [14 ,15 ]
Aoki, K. [36 ,57 ]
Apadula, N. [63 ]
Appelt, E. [67 ]
Aramaki, Y. [12 ,57 ]
Armendariz, R. [8 ]
Aschenauer, E. C. [7 ]
Atomssa, E. T. [37 ]
Averbeck, R. [63 ]
Awes, T. C. [53 ]
Azmoun, B. [7 ]
Babintsev, V. [25 ]
Bai, M. [6 ]
Baksay, G. [20 ]
Baksay, L. [20 ]
Bannier, B. [63 ]
Barish, K. N. [8 ]
Bassalleck, B. [50 ]
Basye, A. T. [1 ]
Bathe, S. [5 ,8 ,58 ]
Baublis, V. [56 ]
Baumann, C. [46 ]
Bazilevsky, A. [7 ]
Belikov, S. [7 ]
Belmont, R. [67 ]
Ben-Benjamin, J. [47 ]
Bennett, R. [63 ]
Bhom, J. H. [71 ]
Blau, D. S. [35 ]
Bok, J. S. [71 ]
Boyle, K. [58 ,63 ]
Brooks, M. L. [40 ]
Broxmeyer, D. [47 ]
Buesching, H. [7 ]
Bumazhnov, V. [25 ]
Bunce, G. [7 ,58 ]
Butsyk, S. [40 ]
Campbell, S. [63 ]
Caringi, A. [47 ]
Castera, P. [63 ]
Chen, C. -H. [63 ]
机构
[1] Abilene Christian Univ, Abilene, TX 79699 USA
[2] Augustana Coll, Dept Phys, Sioux Falls, SD 57197 USA
[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[4] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[5] CUNY Bernard M Baruch Coll, New York, NY 10010 USA
[6] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA
[7] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[8] Univ Calif Riverside, Riverside, CA 92521 USA
[9] Charles Univ Prague, CR-11636 Prague 1, Czech Republic
[10] Chonbuk Natl Univ, Jeonju 561756, South Korea
[11] China Inst Atom Energy, Sci & Technol Nucl Data Lab, Beijing 102413, Peoples R China
[12] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[13] Univ Colorado, Boulder, CO 80309 USA
[14] Columbia Univ, New York, NY 10027 USA
[15] Nevis Labs, Irvington, NY 10533 USA
[16] Czech Tech Univ, Prague 16636 6, Czech Republic
[17] CEA Saclay, F-91191 Gif Sur Yvette, France
[18] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary
[19] Ewha Womans Univ, Seoul 120750, South Korea
[20] Florida Inst Technol, Melbourne, FL 32901 USA
[21] Florida State Univ, Tallahassee, FL 32306 USA
[22] Georgia State Univ, Atlanta, GA 30303 USA
[23] Hanyang Univ, Seoul 133792, South Korea
[24] Hiroshima Univ, Higashihiroshima 7398526, Japan
[25] Inst High Energy Phys, State Res Ctr Russian Federat, IHEP Protvino, Protvino 142281, Russia
[26] Univ Illinois, Urbana, IL 61801 USA
[27] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[28] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic
[29] Iowa State Univ, Ames, IA 50011 USA
[30] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[31] Helsinki Inst Phys, FI-40014 Jyvaskyla, Finland
[32] Univ Jyvaskyla, FI-40014 Jyvaskyla, Finland
[33] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
[34] Korea Univ, Seoul 136701, South Korea
[35] Kurchatov Inst, Russian Res Ctr, Moscow 123098, Russia
[36] Kyoto Univ, Kyoto 6068502, Japan
[37] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[38] Lahore Univ Management Sci, Dept Phys, Lahore 54792, Pakistan
[39] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[40] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[41] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Aubiere, France
[42] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
[43] Univ Maryland, College Pk, MD 20742 USA
[44] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[45] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[46] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[47] Muhlenberg Coll, Allentown, PA 18104 USA
[48] Myongji Univ, Yongin 449728, Kyonggido, South Korea
[49] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan
[50] Univ New Mexico, Albuquerque, NM 87131 USA
基金
日本学术振兴会; 新加坡国家研究基金会; 美国国家科学基金会; 以色列科学基金会;
关键词
40;
D O I
10.1103/PhysRevLett.112.252301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The PHENIX experiment has measured open heavy-flavor production via semileptonic decay over the transverse momentum range 1 < p(T) < 6 GeV/c at forward and backward rapidity (1.4 < vertical bar y vertical bar < 2.0) in d + Au and p + p collisions at root s(NN) = 200 GeV. In central d + Au collisions, relative to the yield in p + p collisions scaled by the number of binary nucleon-nucleon collisions, a suppression is observed at forward rapidity (in the d-going direction) and an enhancement at backward rapidity (in the Au-going direction). Predictions using nuclear-modified-parton-distribution functions, even with additional nuclear-p(T) broadening, cannot simultaneously reproduce the data at both rapidity ranges, which implies that these models are incomplete and suggests the possible importance of final-state interactions in the asymmetric d + Au collision system. These results can be used to probe cold-nuclear-matter effects, which may significantly affect heavy-quark production, in addition to helping constrain the magnitude of charmonia-breakup effects in nuclear matter.
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页数:8
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