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Phys Rev Lett. 2015 Oct 02;115(14):142301. doi: 10.1103/PhysRevLett.115.142301. Epub 2015 Sep 28.

Measurements of Elliptic and Triangular Flow in High-Multiplicity 3He+Au Collisions at √(s(NN))=200 GeV.

Physical review letters

A Adare, S Afanasiev, C Aidala, N N Ajitanand, Y Akiba, R Akimoto, H Al-Bataineh, J Alexander, M Alfred, H Al-Ta'ani, K R Andrews, A Angerami, K Aoki, N Apadula, L Aphecetche, E Appelt, Y Aramaki, R Armendariz, S H Aronson, J Asai, H Asano, E C Aschenauer, E T Atomssa, R Averbeck, T C Awes, B Azmoun, V Babintsev, M Bai, G Baksay, L Baksay, A Baldisseri, N S Bandara, B Bannier, K N Barish, P D Barnes, B Bassalleck, A T Basye, S Bathe, S Batsouli, V Baublis, C Baumann, A Bazilevsky, M Beaumier, S Beckman, S Belikov, R Belmont, J Ben-Benjamin, R Bennett, A Berdnikov, Y Berdnikov, J H Bhom, A A Bickley, D S Blau, J G Boissevain, J S Bok, H Borel, K Boyle, M L Brooks, D Broxmeyer, J Bryslawskyj, H Buesching, V Bumazhnov, G Bunce, S Butsyk, C M Camacho, S Campbell, A Caringi, P Castera, B S Chang, W C Chang, J-L Charvet, C-H Chen, S Chernichenko, C Y Chi, J Chiba, M Chiu, I J Choi, J B Choi, R K Choudhury, P Christiansen, T Chujo, P Chung, A Churyn, O Chvala, V Cianciolo, Z Citron, C R 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W Kim, M Kim, S H Kim, Y-J Kim, Y K Kim, B Kimelman, E Kinney, K Kiriluk, Á Kiss, E Kistenev, R Kitamura, A Kiyomichi, J Klatsky, J Klay, C Klein-Boesing, D Kleinjan, P Kline, T Koblesky, L Kochenda, V Kochetkov, B Komkov, M Konno, J Koster, D Kotchetkov, D Kotov, A Kozlov, A Král, A Kravitz, J Kubart, G J Kunde, N Kurihara, K Kurita, M Kurosawa, M J Kweon, Y Kwon, G S Kyle, R Lacey, Y S Lai, J G Lajoie, D Layton, A Lebedev, D M Lee, J Lee, K B Lee, K S Lee, M K Lee, S Lee, S H Lee, S R Lee, T Lee, M J Leitch, M A L Leite, B Lenzi, X Li, P Lichtenwalner, P Liebing, S H Lim, L A Linden Levy, T Liška, A Litvinenko, H Liu, M X Liu, B Love, D Lynch, C F Maguire, Y I Makdisi, M Makek, A Malakhov, M D Malik, A Manion, V I Manko, E Mannel, Y Mao, L Mašek, H Masui, F Matathias, M McCumber, P L McGaughey, D McGlinchey, C McKinney, N Means, A Meles, M Mendoza, B Meredith, Y Miake, T Mibe, A C Mignerey, P Mikeš, K Miki, T E Miller, A Milov, S Mioduszewski, D K Mishra, M Mishra, J T Mitchell, M Mitrovski, Y Miyachi, S Miyasaka, S Mizuno, A K Mohanty, P Montuenga, H J Moon, T Moon, Y Morino, A Morreale, D P Morrison, S Motschwiller, T V Moukhanova, D Mukhopadhyay, T Murakami, J Murata, A Mwai, S Nagamiya, K Nagashima, Y Nagata, J L Nagle, M Naglis, M I Nagy, I Nakagawa, H Nakagomi, Y Nakamiya, K R Nakamura, T Nakamura, K Nakano, S Nam, C Nattrass, P K Netrakanti, J Newby, M Nguyen, M Nihashi, T Niida, S Nishimura, B E Norman, R Nouicer, T Novak, N Novitzky, A S Nyanin, C Oakley, E O'Brien, S X Oda, C A Ogilvie, H Ohnishi, M Oka, K Okada, O O Omiwade, Y Onuki, J D Orjuela Koop, J D Osborn, A Oskarsson, M Ouchida, K Ozawa, R Pak, D Pal, A P T Palounek, V Pantuev, V Papavassiliou, B H Park, I H Park, J Park, J S Park, S Park, S K Park, W J Park, S F Pate, L Patel, M Patel, H Pei, J-C Peng, H Pereira, D V Perepelitsa, G D N Perera, V Peresedov, D Yu Peressounko, J Perry, R Petti, C Pinkenburg, R Pinson, R P Pisani, M Proissl, M L Purschke, A K Purwar, H Qu, J Rak, A Rakotozafindrabe, B J Ramson, I Ravinovich, K F Read, S Rembeczki, M Reuter, K Reygers, D Reynolds, V Riabov, Y Riabov, E Richardson, T Rinn, D Roach, G Roche, S D Rolnick, A Romana, M Rosati, C A Rosen, S S E Rosendahl, P Rosnet, Z Rowan, J G Rubin, P Rukoyatkin, P Ružička, V L Rykov, B Sahlmueller, N Saito, T Sakaguchi, S Sakai, K Sakashita, H Sakata, H Sako, V Samsonov, S Sano, M Sarsour, S Sato, T Sato, M Savastio, S Sawada, B Schaefer, B K Schmoll, K Sedgwick, J Seele, R Seidl, A Yu Semenov, V Semenov, A Sen, R Seto, P Sett, A Sexton, D Sharma, I Shein, A Shevel, T-A Shibata, K Shigaki, H H Shim, M Shimomura, K Shoji, P Shukla, A Sickles, C L Silva, D Silvermyr, C Silvestre, K S Sim, B K Singh, C P Singh, V Singh, S Skutnik, M Slunečka, M Snowball, T Sodre, 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, C Suire, A Sukhanov, T Sumita, J Sun, J Sziklai, T Tabaru, S Takagi, E M Takagui, A 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Affiliations

  1. University of Colorado, Boulder, Colorado 80309, USA.
  2. Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
  3. Columbia University, New York, New York 10027, USA and Nevis Laboratories, Irvington, New York 10533, USA.
  4. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  5. Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA.
  6. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA.
  7. Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  8. RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan.
  9. RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  10. Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
  11. New Mexico State University, Las Cruces, New Mexico 88003, USA.
  12. Department of Physics and Astronomy, Howard University, Washington, DC 20059, USA.
  13. Abilene Christian University, Abilene, Texas 79699, USA.
  14. KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan.
  15. Kyoto University, Kyoto 606-8502, Japan.
  16. Iowa State University, Ames, Iowa 50011, USA.
  17. Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3800, USA.
  18. SUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Université de Nantes) BP 20722-44307 Nantes, France.
  19. Vanderbilt University, Nashville, Tennessee 37235, USA.
  20. University of California-Riverside, Riverside, California 92521, USA.
  21. Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  22. Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128 Palaiseau, France.
  23. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  24. IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia.
  25. Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  26. Florida Institute of Technology, Melbourne, Florida 32901, USA.
  27. Dapnia, CEA Saclay, F-91191 Gif-sur-Yvette, France.
  28. University of New Mexico, Albuquerque, New Mexico 87131, USA.
  29. Baruch College, City University of New York, New York, New York 10010, USA.
  30. PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad region 188300, Russia.
  31. Institut für Kernphysik, University of Muenster, D-48149 Muenster, Germany.
  32. Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA.
  33. Saint Petersburg State Polytechnic University, St. Petersburg 195251, Russia.
  34. Yonsei University, IPAP, Seoul 120-749, Korea.
  35. Russian Research Center "Kurchatov Institute", Moscow 123098, Russia.
  36. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
  37. University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
  38. Chonbuk National University, Jeonju 561-756, Korea.
  39. Bhabha Atomic Research Centre, Bombay 400 085, India.
  40. Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden.
  41. Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
  42. Weizmann Institute, Rehovot 76100, Israel.
  43. Georgia State University, Atlanta, Georgia 30303, USA.
  44. IPN-Orsay, Universite Paris Sud, CNRS-IN2P3, BP1, F-91406 Orsay, France.
  45. ELTE, Eötvös Loránd University, H-1117 Budapest, Pázmány P. s. 1/A, Hungary.
  46. 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.
  47. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA.
  48. Florida State University, Tallahassee, Florida 32306, USA.
  49. Universidade de São Paulo, Instituto de Física, Caixa Postal 66318, São Paulo CEP05315-970, Brazil.
  50. University of Maryland, College Park, Maryland 20742, USA.
  51. Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  52. Physics Department, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan.
  53. Charles University, Ovocný trh 5, Praha 1, 116 36 Prague, Czech Republic.
  54. Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, Japan.
  55. LPC, Université Blaise Pascal, CNRS-IN2P3, Clermont-Fd, 63177 Aubiere Cedex, France.
  56. Czech Technical University, Zikova 4, 166 36 Prague 6, Czech Republic.
  57. Department of Physics, Banaras Hindu University, Varanasi 221005, India.
  58. University of Tennessee, Knoxville, Tennessee 37996, USA.
  59. Department of Physics, Augustana University, Sioux Falls, South Dakota 57197, USA.
  60. Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
  61. Ewha Womans University, Seoul 120-750, Korea.
  62. Peking University, Beijing 100871, People's Republic of China.
  63. Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan.
  64. Korea University, Seoul 136-701, Korea.
  65. Department of Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152-8551, Japan.
  66. Debrecen University, H-4010 Debrecen, Egyetem tér 1, Hungary.
  67. Myongji University, Yongin, Kyonggido 449-728, Korea.
  68. Waseda University, Advanced Research Institute for Science and Engineering, 17 Kikui-cho, Shinjuku-ku, Tokyo 162-0044, Japan.
  69. Hanyang University, Seoul 133-792, Korea.
  70. Helsinki Institute of Physics and University of Jyväskylä, P.O.Box 35, FI-40014 Jyväskylä, Finland.
  71. Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Korea.
  72. Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic.
  73. Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, People's Republic of China.
  74. University of Zagreb, Faculty of Science, Department of Physics, Bijeni?ka 32, HR-10002 Zagreb, Croatia.
  75. Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia.
  76. National Research Nuclear University, MEPhI, Moscow Engineering Physics Institute, Moscow 115409, Russia.
  77. Physics Department, Lahore University of Management Sciences, Lahore 54792, Pakistan.

PMID: 26551807 DOI: 10.1103/PhysRevLett.115.142301

Abstract

We present the first measurement of elliptic (v(2)) and triangular (v(3)) flow in high-multiplicity (3)He+Au collisions at √(s(NN))=200  GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in (3)He+Au and in p+p collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the (3)He+Au system. The collective behavior is quantified in terms of elliptic v(2) and triangular v(3) anisotropy coefficients measured with respect to their corresponding event planes. The v(2) values are comparable to those previously measured in d+Au collisions at the same nucleon-nucleon center-of-mass energy. Comparisons with various theoretical predictions are made, including to models where the hot spots created by the impact of the three (3)He nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow. The agreement of these models with data may indicate the formation of low-viscosity quark-gluon plasma even in these small collision systems.

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