Azimuthal-Angle Dependence of Charged-Pion-Interferometry Measurements with Respect to Second- and Third-Order Event Planes in Au plus Au Collisions at root S-NN=200 GeV
Azimuthal-Angle Dependence of Charged-Pion-Interferometry Measurements with Respect to Second- and Third-Order Event Planes in Au plus Au Collisions at root S-NN=200 GeV
Abilene Christian Univ Augustana Coll Banaras Hindu Univ Bhabha Atom Res Ctr CUNY Brookhaven Natl Lab Univ Calif Riverside Charles Univ Prague Chonbuk Natl Univ China Inst Atom Energy Univ Tokyo Univ Colorado Columbia Univ Nevis Labs Czech Tech Univ CEA Saclay Univ Debrecen Eotvos Lorand Univ Ewha Womans Univ Florida Inst Technol Florida State Univ Georgia State Univ Hiroshima Univ Inst High Energy Phys Univ Illinois Russian Acad Sci Acad Sci Czech Republic Iowa State Univ Japan Atom Energy Agcy Joint Inst Nucl Res Helsinki Inst Phys Univ Jyvaskyla High Energy Accelerator Res Org Korea Univ Russian Res Ctr Kyoto Univ Ecole Polytech Lahore Univ Management Sci Lawrence Livermore Natl Lab Los Alamos Natl Lab Univ Clermont Ferrand Lund Univ Univ Maryland Univ Massachusetts Univ Michigan Univ Munster Muhlenberg Coll Myongji Univ Nagasaki Inst Appl Sci Univ New Mexico New Mexico State Univ Ohio Univ Oak Ridge Natl Lab Univ Paris 11 Peking Univ PNPI RIKEN Nishina Ctr Accelerator Based Sci Rikkyo Univ St Petersburg State Polytech Univ Universidade Federal de São Paulo (UNIFESP) Seoul Natl Univ SUNY Stony Brook Univ Tennessee Tokyo Inst Technol Univ Tsukuba Vanderbilt Univ Waseda Univ Weizmann Inst Sci Hungarian Acad Sci Yonsei Univ
Abstract
Charged-pion-interferometry measurements were made with respect to the second-and third-order event plane for Au + Au collisions at root S-NN = 200 GeV. A strong azimuthal-angle dependence of the extracted Gaussian-source radii was observed with respect to both the second-and third-order event planes. the results for the second-order dependence indicate that the initial eccentricity is reduced during the medium evolution, which is consistent with previous results. in contrast, the results for the third-order dependence indicate that the initial triangular shape is significantly reduced and potentially reversed by the end of the medium evolution, and that the third-order oscillations are largely dominated by the dynamical effects from triangular flow.
Language
English
Sponsor
Office of Nuclear Physics in the Office of Science of the Department of Energy (U.S.) National Science Foundation (U.S.) Abilene Christian University Research Council (U.S.) Research Foundation of SUNY (U.S.) Ministry of Education, Culture, Sports, Science, and Technology (Japan) Japan Society for the Promotion of Science (Japan) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Natural Science Foundation of China (People's Republic of China) Ministry of Education, Youth and Sports (Czech Republic) Centre National de la Recherche Scientifique (France) Commissariat a l'Energie Atomique (France) Institut National de Physique Nucleaire et de Physique des Particules (France) Bundesministerium fur Bildung und Forschung (Germany) Deutscher Akademischer Austausch Dienst (Germany) Alexander von Humboldt Stiftung (Germany) Hungarian National Science Fund, OTKA (Hungary) Department of Atomic Energy (India) Department of Science and Technology (India) Israel Science Foundation (Israel) National Research Foundation (Korea) WCU program of the Ministry Education Science and Technology (Korea) Physics Department, Lahore University of Management Sciences (Pakistan) Ministry of Education and Science, Russian Academy of Sciences, Federal Agency of Atomic Energy (Russia) VR and Wallenberg Foundation (Sweden) U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union U.S.-Hungarian Fulbright Foundation for Educational Exchange U.S.-Israel Binational Science Foundation
Date
2014-06-03
Published in
Physical Review Letters. College Pk: Amer Physical Soc, v. 112, n. 22, 8 p., 2014.