Identified charged particle spectra and yields in Au+Au collisions at sNN=200GeV

作     者：S. S. Adler S. Afanasiev C. Aidala N. N. Ajitanand Y. Akiba J. Alexander R. Amirikas L. Aphecetche S. H. Aronson R. Averbeck T. C. Awes R. Azmoun V. Babintsev A. Baldisseri K. N. Barish P. D. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis A. Bazilevsky S. Belikov Y. Berdnikov S. Bhagavatula J. G. Boissevain H. Borel S. Borenstein M. L. Brooks D. S. Brown N. Bruner D. Bucher H. Buesching V. Bumazhnov G. Bunce J. M. Burward-Hoy S. Butsyk X. Camard J.-S. Chai P. Chand W. C. Chang S. Chernichenko C. Y. Chi J. Chiba M. Chiu I. J. Choi J. Choi R. K. Choudhury T. Chujo V. Cianciolo Y. Cobigo B. A. Cole P. Constantin D. G. d’Enterria G. David H. Delagrange A. Denisov A. Deshpande E. J. Desmond O. Dietzsch O. Drapier A. Drees R. du Rietz A. Durum D. Dutta Y. V. Efremenko K. El Chenawi A. Enokizono H. En‘yo S. Esumi L. Ewell D. E. Fields F. Fleuret S. L. Fokin B. D. Fox Z. Fraenkel J. E. Frantz A. Franz A. D. Frawley S.-Y. Fung S. Garpman T. K. Ghosh A. Glenn G. Gogiberidze M. Gonin J. Gosset Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp W. Guryn H.-Å. Gustafsson T. Hachiya J. S. Haggerty H. Hamagaki A. G. Hansen E. P. Hartouni M. Harvey R. Hayano X. He M. Heffner T. K. Hemmick J. M. Heuser M. Hibino J. C. Hill W. Holzmann K. Homma B. Hong A. Hoover T. Ichihara V. V. Ikonnikov K. Imai D. Isenhower M. Ishihara M. Issah A. Isupov B. V. Jacak W. Y. Jang Y. Jeong J. Jia O. Jinnouchi B. M. Johnson S. C. Johnson K. S. Joo D. Jouan S. Kametani N. Kamihara J. H. Kang S. S. Kapoor K. Katou S. Kelly B. Khachaturov A. Khanzadeev J. Kikuchi D. H. Kim D. J. Kim D. W. Kim E. Kim G.-B. Kim H. J. Kim E. Kistenev A. Kiyomichi K. Kiyoyama C. Klein-Boesing H. Kobayashi L. Kochenda V. Kochetkov D. Koehler T. Kohama M. Kopytine D. Kotchetkov A. Kozlov P. J. Kroon C. H. Kuberg K. Kurita Y. Kuroki M. J. Kweon Y. Kwon G. S. Kyle R. Lacey V. Ladygin J. G. Lajoie A. Lebedev S. Leckey D. M. Lee S. Lee M. J. Leitch X. H. Li H. Lim A. Litvinenko M. X. Liu Y. Liu C. F. Maguire Y. I. Makdisi A. Malakhov V. I. Manko Y. Mao G. Martinez M. D. Marx H. Masui F. Matathias T. Matsumoto P. L. McGaughey E. Melnikov F. Messer Y. Miake J. Milan T. E. Miller A. Milov S. Mioduszewski R. E. Mischke G. C. Mishra J. T. Mitchell A. K. Mohanty D. P. Morrison J. M. Moss F. Mühlbacher D. Mukhopadhyay M. Muniruzzaman J. Murata S. Nagamiya J. L. Nagle T. Nakamura B. K. Nandi M. Nara J. Newby P. Nilsson A. S. Nyanin J. Nystrand E. O’Brien C. A. Ogilvie H. Ohnishi I. D. Ojha K. Okada M. Ono V. Onuchin A. Oskarsson I. Otterlund K. Oyama K. Ozawa D. Pal A. P.T. Palounek V. S. Pantuev V. Papavassiliou J. Park A. Parmar S. F. Pate T. Peitzmann J.-C. Peng V. Peresedov C. Pinkenburg R. P. Pisani F. Plasil M. L. Purschke A. K. Purwar J. Rak I. Ravinovich K. F. Read M. Reuter K. Reygers V. Riabov Y. Riabov G. Roche A. Romana M. Rosati P. Rosnet S. S. Ryu M. E. Sadler N. Saito T. Sakaguchi M. Sakai S. Sakai V. Samsonov L. Sanfratello R. Santo H. D. Sato S. Sato S. Sawada Y. Schutz V. Semenov R. Seto M. R. Shaw T. K. Shea T.-A. Shibata K. Shigaki T. Shiina C. L. Silva D. Silvermyr K. S. Sim C. P. Singh V. Singh M. Sivertz A. Soldatov R. A. Soltz W. E. Sondheim S. P. Sorensen I. V. Sourikova F. Staley P. W. Stankus E. Stenlund M. Stepanov A. Ster S. P. Stoll T. Sugitate J. P. Sullivan E. M. Takagui A. Taketani M. Tamai K. H. Tanaka Y. Tanaka K. Tanida M. J. Tannenbaum P. Tarján J. D. Tepe T. L. Thomas J. Tojo H. Torii R. S. Towell I. Tserruya H. Tsuruoka S. K. Tuli H. Tydesjö N. Tyurin H. W. van Hecke J. Velkovska M. Velkovsky L. Villatte A. A. Vinogradov M. A. Volkov E. Vznuzdaev X. R. Wang Y. Watanabe S. N. White F. K. Wohn C. L. Woody W. Xie Y. Yang A. Yanovich S. Yokkaichi G. R. Young I. E. Yushmanov W. A. Zajc C. Zhang S. Zhou S. J. Zhou L. Zolin 

作者机构：Brookhaven National Laboratory Upton New York 11973-5000 USA Joint Institute for Nuclear Research 141980 Dubna Moscow Region Russia Chemistry Department Stony Brook University SUNY Stony Brook New York 11794-3400 USA KEK High Energy Accelerator Research Organization Tsukuba-shi Ibaraki-ken 305-0801 Japan RIKEN (The Institute of Physical and Chemical Research) Wako Saitama 351-0198 Japan Florida State University Tallahassee Florida 32306 USA SUBATECH (Ecole des Mines de Nantes CNRS-IN2P3 Université de Nantes) BP 20722 44307 Nantes France Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794 USA Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Institute for High Energy Physics (IHEP) Protvino Russia Dapnia CEA Saclay F-91191 Gif-sur-Yvette France University of California—Riverside Riverside California 92521 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA University of New Mexico Albuquerque New Mexico 87131 USA Institut fuer Kernphysik University of Muenster D-48149 Muenster Germany Columbia University New York New York 10027 USA and Nevis Laboratories Irvington New York 10533 USA PNPI Petersburg Nuclear Physics Institute Gatchina Russia RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Iowa State University Ames Iowa 50011 USA St. Petersburg State Technical University St. Petersburg Russia Laboratoire Leprince-Ringuet Ecole Polytechnique CNRS-IN2P3 Route de Saclay F-91128 Palaiseau France New Mexico State University Las Cruces New Mexico 88003 USA Lawrence Livermore National Laboratory Livermore California 94550 USA KAERI Cyclotron Application Laboratory Seoul South Korea Bhabha Atomic Research Centre Bombay 400 085 India Institute of Physics Academia Sinica Taipei 11529 Taiwan Yonsei University IPAP Seoul 120-749 Korea Kangnung National University Kangnung 210-702 South Korea Universidade de São Paulo Instituto de Física Caixa Postal 66318 São Paulo CEP05315-970 Brazil Department of Physics Lund University Box 118 SE-221 00 Lund Sweden Vanderbilt University Nashville Tennessee 37235 USA Hiroshima University Kagamiyama Higashi-Hiroshima 739-8526 Japan Institute of Physics University of Tsukuba Tsukuba Ibaraki 305 Japan Russian Research Center “Kurchatov Institute” Moscow Russia Weizmann Institute Rehovot 76100 Israel University of Tennessee Knoxville Tennessee 37996 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Georgia State University Atlanta Georgia 30303 USA Waseda University Advanced Research Institute for Science and Engineering 17 Kikui-cho Shinjuku-ku Tokyo 162-0044 Japan Korea University Seoul 136-701 Korea Kyoto University Kyoto 606 Japan Abilene Christian University Abilene Texas 79699 USA Myongji University Yongin Kyonggido 449-728 Korea IPN-Orsay Universite Paris Sud CNRS-IN2P3 BP1 F-91406 Orsay France Department of Physics Tokyo Institute of Technology Tokyo 152-8551 Japan System Electronics Laboratory Seoul National University Seoul South Korea Nagasaki Institute of Applied Science Nagasaki-shi Nagasaki 851-0193 Japan China Institute of Atomic Energy (CIAE) Beijing People’s Republic of China Department of Physics Banaras Hindu University Varanasi 221005 India LPC Université Blaise Pascal CNRS-IN2P3 Clermont-Fd 63177 Aubiere Cedex France KFKI Research Institute for Particle and Nuclear Physics (RMKI) H-1525 Budapest 114 P. O. Box 49 Hungary Debrecen University H-4010 Debrecen Egyetem tér 1 Hungary 

出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)

年 卷 期：2004年第69卷第3期

页      面：034909-034909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：Abilene Christian University Research Council Center for High Energy Physics Centre National de la Recherche Scientifique, Commissariat à l’Énergie Atomique Department of Atomic Energy and Department of Science and Technology (India), Israel Science Foundation (Israel), Korea Research Foundation Nuclear Physics Division Research Foundation of SUNY Russian Ministry of Industry, Science and Tekhnologies US-Hungarian NSF-OTKA-MTA Wallenberg Foundation (Sweden) National Science Foundation, NSF U.S. Department of Energy, USDOE CRDF Global, CRDF Alexander von Humboldt-Stiftung, AvH Office of Science, SC Vanderbilt University, VU College of Arts and Sciences, Boston University Deutscher Akademischer Austauschdienst, DAAD Japan Society for the Promotion of Science, KAKEN Ministry of Education, Culture, Sports, Science and Technology, MEXT United States-Israel Binational Science Foundation, BSF Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP National Natural Science Foundation of China, NSFC Bundesministerium für Bildung und Forschung, BMBF Russian Academy of Sciences, РАН Hungarian Scientific Research Fund, OTKA Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq Institut National de Physique Nucléaire et de Physique des Particules, IN2P3 Federal Agency of Atomic Energy of the Russian Federation 

摘      要：The centrality dependence of transverse momentum distributions and yields for π±,K±,p, and p¯ in Au+Au collisions at sNN=200GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. We observe a clear particle mass dependence of the shapes of transverse momentum spectra in central collisions below ∼2GeV∕c in pT. Both mean transverse momenta and particle yields per participant pair increase from peripheral to midcentral and saturate at the most central collisions for all particle species. We also measure particle ratios of π−∕π+, K−∕K+, p¯∕p, K∕π, p∕π, and p¯∕π as a function of pT and collision centrality. The ratios of equal mass particle yields are independent of pT and centrality within the experimental uncertainties. In central collisions at intermediate transverse momenta ∼1.5–4.5GeV∕c, proton and antiproton yields constitute a significant fraction of the charged hadron production and show a scaling behavior different from that of pions.