版权所有：内蒙古大学图书馆 技术提供：维普资讯• 智图
内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
Production of π0 and η mesons in Cu+Au collisions at sNN=200GeV
作者机构：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 KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan 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 ELTE Eötvös Loránd University H-1117 Budapest Pázmány P. s. 1/A Hungary 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 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 University of Colorado Boulder Colorado 80309 USA Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia National Research Center “Kurchatov Institute” Moscow 123098 Russia National Research Nuclear University MEPhI Moscow Engineering Physics Institute Moscow 115409 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 Tomonaga Center for the History of the Universe University of Tsukuba Tsukuba Ibaraki 305 Japan Georgia State University Atlanta Georgia 30303 USA Muhlenberg College Allentown Pennsylvania 18104-5586 USA Eszterházy Károly University Károly Róbert Campus H-3200 Gyöngyös Mátrai út 36 Hungary Institute for Particle and Nuclear Physics Wigner Research Centre for Physics Hungarian Academy of Sciences (Wigner RCP RMKI) H-1525 Budapest 114 POBox 49 Budapest Hungary Department of Physics and Astronomy Ohio University Athens Ohio 45701 USA Abilene Christian University Abilene Texas 79699 USA Yonsei University IPAP Seoul 120-749 Korea University of Maryland College Park Maryland 20742 USA Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France 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 Nagasaki Institute of Applied Science Nagasaki-shi Nagasaki 851-0193 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 University Sioux Falls South Dakota 57197 USA Nara Women's University Kita-uoya Nishi-machi Nara 630-8506 Japan 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 Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay BP1 F-91406 Orsay France Hanyang University Seoul 133-792 Korea Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA Helsinki Institute of Physics and University of Jyväskylä P.O.Box 35 FI-40014 Jyväskylä Finland Sungkyunkwan University Suwon 440-746 Korea Debrecen University H-4010 Debrecen Egyetem tér 1 Hungary Weizmann Institute Rehovot 76100 Israel Department of Physics Faculty of Science University of Zagreb Bijenička c. 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 IPNL CNRS/IN2P3 Univ Lyon Université Lyon 1 F-69622 Villeurbanne France 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 Peking University Beijing 100871 People's Republic of China
出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)
年 卷 期：2018年第98卷第5期
页 面：054903-054903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：Kementerian Pendidikan Malaysia, KPM National Research Foundation of Korea, NRF Institut National de Physique Nucléaire et de Physique des Particules, IN2P3 Centre National de la Recherche Scientifique, Commissariat à l’Énergie Atomique Russian Academy of Sciences, РАН Deutscher Akademischer Austauschdienst, DAAD Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq Abilene Christian University Research Council Ministarstvo znanosti i obrazovanja Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH United States-Israel Binational Science Foundation, BSF U.S. Department of Energy, USDOE Ministry of Education and Science of the Russian Federation, Minobrnauka Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP Bundesminis-terium für Bildung und Forschung US-Hungarian Fulbright Foundation U.S. Civilian Research Research Foundation of SUNY Department of Atomic Energy and Department of Science and Technology (India), Israel Science Foundation Wallen-berg Foundation College of Arts and Sciences, Boston University Hungarian Scientific Research Fund, OTKA Physics Department Nuclear Physics, NP Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT Federal Agency of Atomic Energy Lahore University of Management Sciences, LUMS Alexander von Humboldt-Stiftung Hrvatska Zaklada za Znanost, HRZZ Vanderbilt University, VU Ministry of Education, Culture, Sports, Science and Technology, Monbusho National Natural Science Foundation of China, NSFC National Science Foundation, NSF, (1712953, 1812377) National Science Foundation, NSF Japan Society for the Promotion of Science, JSPS, (18H05401, 16K17701, 15H03664) Japan Society for the Promotion of Science, JSPS
主 题：Relativistic heavy-ion collisions Light mesons Pions Hadron colliders
摘 要：Production of π0 and η mesons has been measured at midrapidity in Cu+Au collisions at sNN=200GeV. Measurements were performed in π0(η)→γγ decay channel in the 1(2)−20GeV/c transverse momentum range. A strong suppression is observed for π0 and η meson production at high transverse momentum in central Cu+Au collisions relative to the p+p results scaled by the number of nucleon-nucleon collisions. In central collisions the suppression is similar to Au+Au with comparable nuclear overlap. The η/π0 ratio measured as a function of transverse momentum is consistent with mT-scaling parametrization down to pT=2GeV/c, its asymptotic value is constant and consistent with Au+Au and p+p and does not show any significant dependence on collision centrality. Similar results were obtained in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions as well as in e+e− collisions in a range of collision energies sNN=3−1800 GeV. This suggests that the quark-gluon-plasma medium produced in Cu+Cu collisions either does not affect the jet fragmentation into light mesons or it affects the π0 and η the same way.
