Phys. Rev. Lett. 95, 122301 (2005) [6 pages]
Multistrange Baryon Elliptic Flow in Au+Au Collisions at sqrt[sNN]=200 GeV
J. Adams et al. STAR Collaboration
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J. Adams3, M. M. Aggarwal29, Z. Ahammed43, J. Amonett20, B. D. Anderson20, D. Arkhipkin13, G. S. Averichev12, S. K. Badyal19, Y. Bai27, J. Balewski17, O. Barannikova32, L. S. Barnby3, J. Baudot18, S. Bekele28, V. V. Belaga12, A. Bellingeri-Laurikainen38, R. Bellwied46, J. Berger14, B. I. Bezverkhny48, S. Bharadwaj33, A. Bhasin19, A. K. Bhati29, V. S. Bhatia29, H. Bichsel45, J. Bielcik48, J. Bielcikova48, A. Billmeier46, L. C. Bland4, C. O. Blyth3, S. L. Blyth21, B. E. Bonner34, M. Botje27, A. Boucham38, J. Bouchet38, A. V. Brandin25, A. Bravar4, M. Bystersky11, R. V. Cadman1, X. Z. Cai37, H. Caines48, M. Calderón de la Barca Sánchez17, J. Castillo27, O. Catu48, D. Cebra7, Z. Chajecki28, P. Chaloupka11, S. Chattopadhyay43, H. F. Chen36, J. H. Chen37, Y. Chen8, J. Cheng41, M. Cherney10, A. Chikanian48, W. Christie4, J. P. Coffin18, T. M. Cormier46, M. R. Cosentino35, J. G. Cramer45, H. J. Crawford6, D. Das43, S. Das43, M. Daugherity40, M. M. de Moura35, T. G. Dedovich12, M. DePhillips4, A. A. Derevschikov31, L. Didenko4, T. Dietel14, S. M. Dogra19, W. J. Dong8, X. Dong36, J. E. Draper7, F. Du48, A. K. Dubey15, V. B. Dunin12, J. C. Dunlop4, M. R. Dutta Mazumdar43, V. Eckardt23, W. R. Edwards21, L. G. Efimov12, V. Emelianov25, J. Engelage6, G. Eppley34, B. Erazmus38, M. Estienne38, P. Fachini4, J. Faivre18, R. Fatemi22, J. Fedorisin12, K. Filimonov21, P. Filip11, E. Finch48, V. Fine4, Y. Fisyak4, K. S. F. Fornazier35, J. Fu41, C. A. Gagliardi39, L. Gaillard3, J. Gans48, M. S. Ganti43, F. Geurts34, V. Ghazikhanian8, P. Ghosh43, J. E. Gonzalez8, H. Gos44, O. Grachov46, O. Grebenyuk27, D. Grosnick42, S. M. Guertin8, Y. Guo46, A. Gupta19, N. Gupta19, T. D. Gutierrez7, T. J. Hallman4, A. Hamed46, D. Hardtke21, J. W. Harris48, M. Heinz2, T. W. Henry39, S. Hepplemann30, B. Hippolyte18, A. Hirsch32, E. Hjort21, G. W. Hoffmann40, M. J. Horner21, H. Z. Huang8, S. L. Huang36, E. W. Hughes5, T. J. Humanic28, G. Igo8, A. Ishihara40, P. Jacobs21, W. W. Jacobs17, M. Jedynak44, H. Jiang8, P. G. Jones3, E. G. Judd6, S. Kabana2, K. Kang41, M. Kaplan9, D. Keane20, A. Kechechyan12, V. Yu. Khodyrev31, J. Kiryluk22, A. Kisiel44, E. M. Kislov12, J. Klay21, S. R. Klein21, D. D. Koetke42, T. Kollegger14, M. Kopytine20, L. Kotchenda25, K. L. Kowalik21, M. Kramer26, P. Kravtsov25, V. I. Kravtsov31, K. Krueger1, C. Kuhn18, A. I. Kulikov12, A. Kumar29, R. Kh. Kutuev13, A. A. Kuznetsov12, M. A. C. Lamont48, J. M. Landgraf4, S. Lange14, F. Laue4, J. Lauret4, A. Lebedev4, R. Lednicky12, S. Lehocka12, M. J. LeVine4, C. Li36, Q. Li46, Y. Li41, G. Lin48, S. J. Lindenbaum26, M. A. Lisa28, F. Liu47, H. Liu36, J. Liu34, L. Liu47, Q. J. Liu45, Z. Liu47, T. Ljubicic4, W. J. Llope34, H. Long8, R. S. Longacre4, M. Lopez-Noriega28, W. A. Love4, Y. Lu47, T. Ludlam4, D. Lynn4, G. L. Ma37, J. G. Ma8, Y. G. Ma37, D. Magestro28, S. Mahajan19, D. P. Mahapatra15, R. Majka48, L. K. Mangotra19, R. Manweiler42, S. Margetis20, C. Markert20, L. Martin38, J. N. Marx21, H. S. Matis21, Yu. A. Matulenko31, C. J. McClain1, T. S. McShane10, F. Meissner21, Yu. Melnick31, A. Meschanin31, M. L. Miller22, N. G. Minaev31, C. Mironov20, A. Mischke27, D. K. Mishra15, J. Mitchell34, B. Mohanty43, L. Molnar32, C. F. Moore40, D. A. Morozov31, M. G. Munhoz35, B. K. Nandi43, S. K. Nayak19, T. K. Nayak43, J. M. Nelson3, P. K. Netrakanti43, V. A. Nikitin13, L. V. Nogach31, S. B. Nurushev31, G. Odyniec21, A. Ogawa4, V. Okorokov25, M. Oldenburg21, D. Olson21, S. K. Pal43, Y. Panebratsev12, S. Y. Panitkin4, A. I. Pavlinov46, T. Pawlak44, T. Peitzmann27, V. Perevoztchikov4, C. Perkins6, W. Peryt44, V. A. Petrov46, S. C. Phatak15, R. Picha7, M. Planinic49, J. Pluta44, N. Porile32, J. Porter45, A. M. Poskanzer21, M. Potekhin4, E. Potrebenikova12, B. V. K. S. Potukuchi19, D. Prindle45, C. Pruneau46, J. Putschke21, G. Rakness30, R. Raniwala33, S. Raniwala33, O. Ravel38, R. L. Ray40, S. V. Razin12, D. Reichhold32, J. G. Reid45, J. Reinnarth38, G. Renault38, F. Retiere21, A. Ridiger25, H. G. Ritter21, J. B. Roberts34, O. V. Rogachevskiy12, J. L. Romero7, A. Rose21, C. Roy38, L. Ruan36, M. Russcher27, R. Sahoo15, I. Sakrejda21, S. Salur48, J. Sandweiss48, M. Sarsour17, I. Savin13, P. S. Sazhin12, J. Schambach40, R. P. Scharenberg32, N. Schmitz23, K. Schweda21, J. Seger10, P. Seyboth23, E. Shahaliev12, M. Shao36, W. Shao5, M. Sharma29, W. Q. Shen37, K. E. Shestermanov31, S. S. Shimanskiy12, E. Sichtermann21, F. Simon22, R. N. Singaraju43, N. Smirnov48, R. Snellings27, G. Sood42, P. Sorensen21, J. Sowinski17, J. Speltz18, H. M. Spinka1, B. Srivastava32, A. Stadnik12, T. D. S. Stanislaus42, R. Stock14, A. Stolpovsky46, M. Strikhanov25, B. Stringfellow32, A. A. P. Suaide35, E. Sugarbaker28, C. Suire4, M. Sumbera11, B. Surrow22, M. Swanger10, T. J. M. Symons21, A. Szanto de Toledo35, A. Tai8, J. Takahashi35, A. H. Tang27, T. Tarnowsky32, D. Thein8, J. H. Thomas21, A. R. Timmins3, S. Timoshenko25, M. Tokarev12, S. Trentalange8, R. E. Tribble39, O. D. Tsai8, J. Ulery32, T. Ullrich4, D. G. Underwood1, G. Van Buren4, N. van der Kolk27, M. van Leeuwen21, A. M. Vander Molen24, R. Varma16, I. M. Vasilevski13, A. N. Vasiliev31, R. Vernet18, S. E. Vigdor17, Y. P. Viyogi43, S. Vokal12, S. A. Voloshin46, W. T. Waggoner10, F. Wang32, G. Wang20, G. Wang5, X. L. Wang36, Y. Wang40, Y. Wang41, Z. M. Wang36, H. Ward40, J. W. Watson20, J. C. Webb17, G. D. Westfall24, A. Wetzler21, C. Whitten, Jr.8, H. Wieman21, S. W. Wissink17, R. Witt2, J. Wood8, J. Wu36, N. Xu21, Z. Xu4, Z. Z. Xu36, E. Yamamoto21, P. Yepes34, V. I. Yurevich12, I. Zborovsky11, H. Zhang4, W. M. Zhang20, Y. Zhang36, Z. P. Zhang36, C. Zhong37, R. Zoulkarneev13, Y. Zoulkarneeva13, A. N. Zubarev12, and J. X. Zuo37 (STAR Collaboration)
1Argonne National Laboratory, Argonne, Illinois 60439, USA
2University of Bern, 3012 Bern, Switzerland
3University of Birmingham, Birmingham, United Kingdom
4Brookhaven National Laboratory, Upton, New York 11973, USA
5California Institute of Technology, Pasadena, California 91125, USA
6University of California, Berkeley, California 94720, USA
7University of California, Davis, California 95616, USA
8University of California, Los Angeles, California 90095, USA
9Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
10Creighton University, Omaha, Nebraska 68178, USA
11Nuclear Physics Institute AS CR, 25068 Řež/Prague, Czech Republic
12Laboratory for High Energy (JINR), Dubna, Russia
13Particle Physics Laboratory (JINR), Dubna, Russia
14University of Frankfurt, Frankfurt, Germany
15Institute of Physics, Bhubaneswar 751005, India
16Indian Institute of Technology, Mumbai, India
17Indiana University, Bloomington, Indiana 47408, USA
18Institut de Recherches Subatomiques, Strasbourg, France
19University of Jammu, Jammu 180001, India
20Kent State University, Kent, Ohio 44242, USA
21Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
22Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
23Max-Planck-Institut für Physik, Munich, Germany
24Michigan State University, East Lansing, Michigan 48824, USA
25Moscow Engineering Physics Institute, Moscow, Russia
26City College of New York, New York, New York 10031, USA
27NIKHEF and Utrecht University, Amsterdam, The Netherlands
28Ohio State University, Columbus, Ohio 43210, USA
29Panjab University, Chandigarh 160014, India
30Pennsylvania State University, University Park, Pennsylvania 16802, USA
31Institute of High Energy Physics, Protvino, Russia
32Purdue University, West Lafayette, Indiana 47907, USA
33University of Rajasthan, Jaipur 302004, India
34Rice University, Houston, Texas 77251, USA
35Universidade de Sao Paulo, Sao Paulo, Brazil
36University of Science and Technology of China, Anhui 230027, China
37Shanghai Institute of Applied Physics, Shanghai 201800, China
38SUBATECH, Nantes, France
39Texas A&M University, College Station, Texas 77843, USA
40University of Texas, Austin, Texas 78712, USA
41Tsinghua University, Beijing 100084, China
42Valparaiso University, Valparaiso, Indiana 46383, USA
43Variable Energy Cyclotron Centre, Kolkata 700064, India
44Warsaw University of Technology, Warsaw, Poland
45University of Washington, Seattle, Washington 98195, USA
46Wayne State University, Detroit, Michigan 48201, USA
47Institute of Particle Physics, CCNU (HZNU), Wuhan 430079, China
48Yale University, New Haven, Connecticut 06520, USA
49University of Zagreb, Zagreb HR-10002, Croatia
Received 22 April 2005; published 13 September 2005
We report on the first measurement of elliptic flow ν2(pT) of multistrange baryons Ξ-+Ξ̅ + and Ω-+Ω̅ + in heavy-ion collisions. In minimum-bias Au+Au collisions at sqrt[sNN]=200 GeV, a significant amount of elliptic flow, comparable to other nonstrange baryons, is observed for multistrange baryons which are expected to be particularly sensitive to the dynamics of the partonic stage of heavy-ion collisions. The pT dependence of ν2 of the multistrange baryons confirms the number of constituent quark scaling previously observed for lighter hadrons. These results support the idea that a substantial fraction of the observed collective motion is developed at the early partonic stage in ultrarelativistic nuclear collisions at the Relativistic Heavy Ion Collider.
©2005 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.95.122301
DOI: 10.1103/PhysRevLett.95.122301
PACS: 25.75.Ld
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