System size and energy dependence of near-side dihadron correlations
rticle azimuthal (Δφ) and pseudorapidity (Δη) correlations using a trigger particle with large transverse momentum (pT) in d+Au, Cu+Cu, and Au+Au collisions at √sNN = 62.4 GeV and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider are presented. The near-side correlation is sepa...
| Auteurs principaux: | , , , , , , , , , |
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| Format: | Article |
| Langue: | en_US |
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American Physical Society
2012
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| Accès en ligne: | http://hdl.handle.net/1721.1/72138 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-9107-6312 |
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| author | Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Leight, William Axel Seele, Joseph Patrick Surrow, Bernd Redwine, Robert P Steadman, Stephen G van Nieuwenhuizen, Gerrit J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Leight, William Axel Seele, Joseph Patrick Surrow, Bernd Redwine, Robert P Steadman, Stephen G van Nieuwenhuizen, Gerrit J |
| author_sort | Balewski, Jan T. |
| collection | MIT |
| description | rticle azimuthal (Δφ) and pseudorapidity (Δη) correlations using a trigger particle with large transverse momentum (pT) in d+Au, Cu+Cu, and Au+Au collisions at √sNN = 62.4 GeV and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider are presented. The near-side correlation is separated into a jet-like component, narrow in both Δφ and Δη, and the ridge, narrow in Δφ but broad in Δη. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated pT. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at √sNN = 200 GeV, is also found in Cu+Cu collisions and in collisions at √sNN = 62.4 GeV, but is found to be substantially smaller at √sNN = 62.4 GeV than at √sNN = 200 GeV for the same average number of participants (〈Npart〉). Measurements of the ridge are compared to models. |
| first_indexed | 2024-09-23T11:42:21Z |
| format | Article |
| id | mit-1721.1/72138 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:42:21Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/721382023-02-26T11:11:16Z System size and energy dependence of near-side dihadron correlations Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Leight, William Axel Seele, Joseph Patrick Surrow, Bernd Redwine, Robert P Steadman, Stephen G van Nieuwenhuizen, Gerrit J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Redwine, Robert P. Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Leight, William Axel Redwine, Robert P. Seele, Joseph Patrick Steadman, Stephen G. Surrow, Bernd van Nieuwenhuizen, Gerrit Jan rticle azimuthal (Δφ) and pseudorapidity (Δη) correlations using a trigger particle with large transverse momentum (pT) in d+Au, Cu+Cu, and Au+Au collisions at √sNN = 62.4 GeV and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider are presented. The near-side correlation is separated into a jet-like component, narrow in both Δφ and Δη, and the ridge, narrow in Δφ but broad in Δη. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated pT. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at √sNN = 200 GeV, is also found in Cu+Cu collisions and in collisions at √sNN = 62.4 GeV, but is found to be substantially smaller at √sNN = 62.4 GeV than at √sNN = 200 GeV for the same average number of participants (〈Npart〉). Measurements of the ridge are compared to models. 2012-08-15T13:26:54Z 2012-08-15T13:26:54Z 2012-01 2011-10 Article http://purl.org/eprint/type/JournalArticle 0556-2813 1089-490X http://hdl.handle.net/1721.1/72138 Agakishiev, G. et al. “System Size and Energy Dependence of Near-side Dihadron Correlations.” Physical Review C 85.1 (2012): 014903. © 2012 American Physical Society. https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-9107-6312 en_US http://dx.doi.org/10.1103/PhysRevC.85.014903 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 | Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Leight, William Axel Seele, Joseph Patrick Surrow, Bernd Redwine, Robert P Steadman, Stephen G van Nieuwenhuizen, Gerrit J System size and energy dependence of near-side dihadron correlations |
| title | System size and energy dependence of near-side dihadron correlations |
| title_full | System size and energy dependence of near-side dihadron correlations |
| title_fullStr | System size and energy dependence of near-side dihadron correlations |
| title_full_unstemmed | System size and energy dependence of near-side dihadron correlations |
| title_short | System size and energy dependence of near-side dihadron correlations |
| title_sort | system size and energy dependence of near side dihadron correlations |
| url | http://hdl.handle.net/1721.1/72138 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-9107-6312 |
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