Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV
This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at [sqrt]sNN=200 GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, i...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/57493 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-4918-5128 |
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| author | Busza, Wit Alver, Burak Han Ballintijn, Maarten Decowski, Michael P. Gulbrandsen, K. Henderson, C. Kane, J. L. Kulinich, Piotr Li, W. Reed, C. Stephans, George S. F. Vale, C. Vaurynovich, Siarhei S. Verdier, Robin Veres, Gabor Wenger, Edward Allen Wyslouch, Boleslaw Loizides, Constantinos Roland, Christof E Roland, Gunther M van Nieuwenhuizen, Gerrit J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Busza, Wit Alver, Burak Han Ballintijn, Maarten Decowski, Michael P. Gulbrandsen, K. Henderson, C. Kane, J. L. Kulinich, Piotr Li, W. Reed, C. Stephans, George S. F. Vale, C. Vaurynovich, Siarhei S. Verdier, Robin Veres, Gabor Wenger, Edward Allen Wyslouch, Boleslaw Loizides, Constantinos Roland, Christof E Roland, Gunther M van Nieuwenhuizen, Gerrit J |
| author_sort | Busza, Wit |
| collection | MIT |
| description | This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at [sqrt]sNN=200 GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions. |
| first_indexed | 2024-09-23T08:25:12Z |
| format | Article |
| id | mit-1721.1/57493 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:25:12Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/574932023-02-26T08:11:45Z Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at √sNN=200 GeV Busza, Wit Alver, Burak Han Ballintijn, Maarten Decowski, Michael P. Gulbrandsen, K. Henderson, C. Kane, J. L. Kulinich, Piotr Li, W. Reed, C. Stephans, George S. F. Vale, C. Vaurynovich, Siarhei S. Verdier, Robin Veres, Gabor Wenger, Edward Allen Wyslouch, Boleslaw Loizides, Constantinos Roland, Christof E Roland, Gunther M van Nieuwenhuizen, Gerrit J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Busza, Wit Busza, Wit Alver, Burak Han Ballintijn, Maarten Decowski, Michael P. Gulbrandsen, K. Henderson, C. Kane, J. L. Kulinich, Piotr Li, W. Loizides, Constantin Reed, C. Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Vale, C. van Nieuwenhuizen, Gerrit Jan Vaurynovich, Siarhei S. Verdier, Robin Veres, Gabor Wenger, Edward Allen Wyslouch, Boleslaw This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter v2 in Au+Au collisions at [sqrt]sNN=200 GeV as a function of collision centrality. The relative nonstatistical fluctuations of the v2 parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions. United States Department of Energy (grants DE-AC02-98CH10886, DE-FG02-93ER40802, DEFG02- 94ER40818, DE-FG02-94ER40865, DE-FG02- 99ER41099, and DE-AC02-06CH11357) National Science Foundation (grants 9603486, 0072204, and 0245011) Polish Ministry of Science and Higher Education (grant N N202 282234 (2008-2010) National Science Council of Taiwan (Contract NSC 89-2112-M-008-024) Hungarian Scientific Research Fund (OTKA grant F049823) 2010-08-12T16:05:27Z 2010-08-12T16:05:27Z 2010-04 2010-02 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/57493 Alver, B. et al. “Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV.” Physical Review Letters 104.14 (2010): 142301. © 2010 The American Physical Society. https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-4918-5128 en_US http://dx.doi.org/10.1103/PhysRevLett.104.142301 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Busza, Wit Alver, Burak Han Ballintijn, Maarten Decowski, Michael P. Gulbrandsen, K. Henderson, C. Kane, J. L. Kulinich, Piotr Li, W. Reed, C. Stephans, George S. F. Vale, C. Vaurynovich, Siarhei S. Verdier, Robin Veres, Gabor Wenger, Edward Allen Wyslouch, Boleslaw Loizides, Constantinos Roland, Christof E Roland, Gunther M van Nieuwenhuizen, Gerrit J Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title | Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title_full | Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title_fullStr | Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title_full_unstemmed | Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title_short | Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at [sqrt]sNN=200 GeV |
| title_sort | event by event fluctuations of azimuthal particle anisotropy in au au collisions at sqrt snn 200 gev |
| url | http://hdl.handle.net/1721.1/57493 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-4918-5128 |
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