Triangular flow in hydrodynamics and transport theory
In ultrarelativistic heavy-ion collisions, the Fourier decomposition of the relative azimuthal angle, Δϕ, distribution of particle pairs yields a large cos(3Δϕ) component, extending to large rapidity separations Δη>1. This component captures a significant portion of the ridge and shoulder structu...
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| Muut tekijät: | |
| Aineistotyyppi: | Artikkeli |
| Kieli: | en_US |
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American Physical Society
2011
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| Linkit: | http://hdl.handle.net/1721.1/60683 |
| _version_ | 1826214072694079488 |
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| author | Alver, Burak Han Gombeaud, Clément Luzum, Matthew Ollitrault, Jean-Yves |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Alver, Burak Han Gombeaud, Clément Luzum, Matthew Ollitrault, Jean-Yves |
| author_sort | Alver, Burak Han |
| collection | MIT |
| description | In ultrarelativistic heavy-ion collisions, the Fourier decomposition of the relative azimuthal angle, Δϕ, distribution of particle pairs yields a large cos(3Δϕ) component, extending to large rapidity separations Δη>1. This component captures a significant portion of the ridge and shoulder structures in the Δϕ distribution, which have been observed after contributions from elliptic flow are subtracted. An average finite triangularity owing to event-by-event fluctuations in the initial matter distribution, followed by collective flow, naturally produces a cos(3Δϕ) correlation. Using ideal and viscous hydrodynamics and transport theory, we study the physics of triangular (v3) flow in comparison to elliptic (v2), quadrangular (v4), and pentagonal (v5) flow. We make quantitative predictions for v3 at RHIC and LHC as a function of centrality and transverse momentum. Our results for the centrality dependence of v3 show a quantitative agreement with data extracted from previous correlation measurements by the STAR collaboration. This study supports previous results on the importance of triangular flow in the understanding of ridge and shoulder structures. Triangular flow is found to be a sensitive probe of initial geometry fluctuations and viscosity. |
| first_indexed | 2024-09-23T15:59:21Z |
| format | Article |
| id | mit-1721.1/60683 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:59:21Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/606832022-10-02T05:33:26Z Triangular flow in hydrodynamics and transport theory Alver, Burak Han Gombeaud, Clément Luzum, Matthew Ollitrault, Jean-Yves Massachusetts Institute of Technology. Laboratory for Nuclear Science Alver, Burak Han Alver, Burak Han In ultrarelativistic heavy-ion collisions, the Fourier decomposition of the relative azimuthal angle, Δϕ, distribution of particle pairs yields a large cos(3Δϕ) component, extending to large rapidity separations Δη>1. This component captures a significant portion of the ridge and shoulder structures in the Δϕ distribution, which have been observed after contributions from elliptic flow are subtracted. An average finite triangularity owing to event-by-event fluctuations in the initial matter distribution, followed by collective flow, naturally produces a cos(3Δϕ) correlation. Using ideal and viscous hydrodynamics and transport theory, we study the physics of triangular (v3) flow in comparison to elliptic (v2), quadrangular (v4), and pentagonal (v5) flow. We make quantitative predictions for v3 at RHIC and LHC as a function of centrality and transverse momentum. Our results for the centrality dependence of v3 show a quantitative agreement with data extracted from previous correlation measurements by the STAR collaboration. This study supports previous results on the importance of triangular flow in the understanding of ridge and shoulder structures. Triangular flow is found to be a sensitive probe of initial geometry fluctuations and viscosity. France. Agence nationale de la recherche (Grant No. ANR-08-BLAN-0093-01) United States. Dept. of Energy (Grant No. DE-FG02- 94ER40818) 2011-01-20T16:45:30Z 2011-01-20T16:45:30Z 2010-09 2010-08 Article http://purl.org/eprint/type/JournalArticle 0556-2813 http://hdl.handle.net/1721.1/60683 Alver, Burak Han et al. “Triangular flow in hydrodynamics and transport theory.” Physical Review C 82.3 (2010): 034913. © 2010 The American Physical Society. en_US http://dx.doi.org/10.1103/PhysRevC.82.034913 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 | Alver, Burak Han Gombeaud, Clément Luzum, Matthew Ollitrault, Jean-Yves Triangular flow in hydrodynamics and transport theory |
| title | Triangular flow in hydrodynamics and transport theory |
| title_full | Triangular flow in hydrodynamics and transport theory |
| title_fullStr | Triangular flow in hydrodynamics and transport theory |
| title_full_unstemmed | Triangular flow in hydrodynamics and transport theory |
| title_short | Triangular flow in hydrodynamics and transport theory |
| title_sort | triangular flow in hydrodynamics and transport theory |
| url | http://hdl.handle.net/1721.1/60683 |
| work_keys_str_mv | AT alverburakhan triangularflowinhydrodynamicsandtransporttheory AT gombeaudclement triangularflowinhydrodynamicsandtransporttheory AT luzummatthew triangularflowinhydrodynamicsandtransporttheory AT ollitraultjeanyves triangularflowinhydrodynamicsandtransporttheory |