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Nuclear matter effects on J/ψ production in asymmetric Cu + Au collisions at sNN=200 GeV
在在 sNN=200 GeV 的不对称的 Cu+Au 碰撞的 J/ 生产上的原子事效果作者机构：University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973-5000 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California—Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA PNPI Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 Russia Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia Department of Physics and Astronomy Ohio University Athens Ohio 45701 USA Russian Research Center “Kurchatov Institute” Moscow 123098 Russia New Mexico State University Las Cruces New Mexico 88003 USA University of New Mexico Albuquerque New Mexico 87131 USA Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 USA University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Chonbuk National University Jeonju 561-756 Korea Department of Physics and Astronomy Seoul National University Seoul 151-742 Korea Department of Physics Lund University Box 118 SE-221 00 Lund Sweden Institute of Physics University of Tsukuba Tsukuba Ibaraki 305 Japan Weizmann Institute Rehovot 76100 Israel Muhlenberg College Allentown Pennsylvania 18104-5586 USA ELTE Eötvös Loránd University H-1117 Budapest Pázmany Péter sétány 1/A Hungary Institute for Particle and Nuclear Physics Wigner Research Centre for Physics Hungarian Academy of Sciences (Wigner RCP RMKI) H-1525 Budapest 114 P. O. Box 49 Budapest Hungary Abilene Christian University Abilene Texas 79699 USA Yonsei University IPAP Seoul 120-749 Korea Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France University of Maryland College Park Maryland 20742 USA Physics Department Rikkyo University 3-34-1 Nishi-Ikebukuro Toshima Tokyo 171-8501 Japan Charles University Ovocný trh 5 Praha 1 116 36 Prague Czech Republic Florida State University Tallahassee Florida 32306 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Czech Technical University Zikova 4 166 36 Prague 6 Czech Republic Department of Physics Banaras Hindu University Varanasi 221005 India University of Tennessee Knoxville Tennessee 37996 USA Lawrence Livermore National Laboratory Livermore California 94550 USA Department of Physics Augustana College Sioux Falls South Dakota 57197 USA Georgia State University Atlanta Georgia 30303 USA Ewha Womans University Seoul 120-750 Korea Advanced Science Research Center Japan Atomic Energy Agency 2-4 Shirakata Shirane Tokai-mura Naka-gun Ibaraki-ken 319-1195 Japan Hiroshima University Kagamiyama Higashi-Hiroshima 739-8526 Japan Korea University Seoul 136-701 Korea Myongji University Yongin Kyonggido 449-728 Korea IPN-Orsay Universite Paris Sud CNRS-IN2P3 BP1 F-91406 Orsay France Hanyang University Seoul 133-792 Korea Helsinki Institute of Physics and University of Jyväskylä P.O.Box 35 FI-40014 Jyväskylä Finland University of Zagreb Faculty of Science Department of Physics Bijenička 32 HR-10002 Zagreb Croatia Bhabha Atomic Research Centre Bombay 400 085 India Department of Physics Tokyo Institute of Technology Oh-okayama Meguro Tokyo 152-8551 Japan Institute for Nuclear Research of the Russian Academy of Sciences prospekt 60-letiya Oktyabrya 7a Moscow 117312 Russia Institute of Physics Academy of Sciences of the Czech Republic Na Slovance 2 182 21 Prague 8 Czech Republic Physics Department Lahore University of Management Sciences Lahore 54792 Pakistan
出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)
年 卷 期：2014年第90卷第6期
页 面：064908-064908页
核心收录：
学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
基 金：Japan Society for the Promotion of Science (24105004)
主 题：Collisions Copper SHADOW EFFECT Heavy ion colliders Comparable Gold copper alloy Nucleons
摘 要：We report on J/ψ production from asymmetric Cu + Au heavy-ion collisions at sNN=200 GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction) and backward (Au-going direction) rapidities. The nuclear modification of J/ψ yields in Cu + Au collisions in the Au-going direction is found to be comparable to that in Au + Au collisions when plotted as a function of the number of participating nucleons. In the Cu-going direction, J/ψ production shows a stronger suppression. This difference is comparable in magnitude and has the same sign as the difference expected from shadowing effects due to stronger low-x gluon suppression in the larger Au nucleus.
