Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV
This article presents results on event-by-event elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN= 200 GeV, where the contribution from non-flow correlations has been subtracted. An analysis method is introduced to measure non-flow correlations, relying on the assumption that non-flow cor...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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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/1721.1/57494 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 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 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 article presents results on event-by-event elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN= 200 GeV, where the contribution from non-flow correlations has been subtracted. An analysis method is introduced to measure non-flow correlations, relying on the assumption that non-flow correlations are most prominent at short ranges (|Δeta|<2). Assuming that non-flow correlations are of the order that is observed in p+p collisions for long-range correlations (|Δeta|>2), relative elliptic flow fluctuations of approximately 30–40% are observed. These results are consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. It is found that the long-range non-flow correlations in Au+Au collisions would have to be more than an order of magnitude strongercompared to the p+p data to lead to the observed azimuthal anisotropy fluctuations with no intrinsic elliptic flow fluctuations. |
| first_indexed | 2024-09-23T08:52:10Z |
| format | Article |
| id | mit-1721.1/57494 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:52:10Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/574942023-02-26T04:23:11Z Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at √sNN=200 GeV Busza, Wit 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 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 article presents results on event-by-event elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN= 200 GeV, where the contribution from non-flow correlations has been subtracted. An analysis method is introduced to measure non-flow correlations, relying on the assumption that non-flow correlations are most prominent at short ranges (|Δeta|<2). Assuming that non-flow correlations are of the order that is observed in p+p collisions for long-range correlations (|Δeta|>2), relative elliptic flow fluctuations of approximately 30–40% are observed. These results are consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. It is found that the long-range non-flow correlations in Au+Au collisions would have to be more than an order of magnitude strongercompared to the p+p data to lead to the observed azimuthal anisotropy fluctuations with no intrinsic elliptic flow fluctuations. United States. Department of Energy (Grants DE-AC02-98CH10886, DE-FG02-93ER40802, DE-FG02- 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 Foundation (grant F 049823) 2010-08-12T16:36:35Z 2010-08-12T16:36:35Z 2010-03 2010-02 Article http://purl.org/eprint/type/JournalArticle 0556-2813 http://hdl.handle.net/1721.1/57494 PHOBOS Collaboration et al. “Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV.” Physical Review C 81.3 (2010): 034915. © 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/PhysRevC.81.034915 Physical Review C 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 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 Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title | Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title_full | Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title_fullStr | Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title_full_unstemmed | Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title_short | Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at [sqrt]sNN=200 GeV |
| title_sort | non flow correlations and elliptic flow fluctuations in au au collisions at sqrt snn 200 gev |
| url | http://hdl.handle.net/1721.1/57494 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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