Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector
Yields, correlation shapes, and mean transverse momenta pT [rho tau] of charged particles associated with intermediate- to high-pT [rho tau] trigger particles (2.5<pT[rho tau]<10 GeV/c) in d+ Au and Au + Au collisions at √[square root]sNN=200 GeV are presented. For associated particles at high...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/60884 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 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 Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd Hoffman, Alan Michael Milner, Richard G Redwine, Robert P van Nieuwenhuizen, Gerrit J Walker, Matthew H |
| author2 | Bates Linear Accelerator Center |
| author_facet | Bates Linear Accelerator Center Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd Hoffman, Alan Michael Milner, Richard G Redwine, Robert P van Nieuwenhuizen, Gerrit J Walker, Matthew H |
| author_sort | Balewski, Jan T. |
| collection | MIT |
| description | Yields, correlation shapes, and mean transverse momenta pT [rho tau] of charged particles associated with intermediate- to high-pT [rho tau] trigger particles (2.5<pT[rho tau]<10 GeV/c) in d+ Au and Au + Au collisions at √[square root]sNN=200 GeV are presented. For associated particles at higher pT [rho tau] ≳2.5 GeV/c, narrow correlation peaks are seen in d+ Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT [rho tau] <2 GeV/c, a large enhancement of the near- (Δϕ~0[delta phi~0]) and away-side (Δϕ~π [delta phi~pi]) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d+ Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Δϕ~π [delta phi~pi] in central Au + Au collisions. |
| first_indexed | 2024-09-23T10:57:53Z |
| format | Article |
| id | mit-1721.1/60884 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:57:53Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/608842023-02-26T10:42:57Z Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at [square root]s[subscript NN]=200 GeV measured at the STAR detector Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd Hoffman, Alan Michael Milner, Richard G Redwine, Robert P van Nieuwenhuizen, Gerrit J Walker, Matthew H Bates Linear Accelerator Center Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Milner, Richard G. Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, A. M. Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G. Redwine, Robert P. Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit Jan Walker, Matthew H. Yields, correlation shapes, and mean transverse momenta pT [rho tau] of charged particles associated with intermediate- to high-pT [rho tau] trigger particles (2.5<pT[rho tau]<10 GeV/c) in d+ Au and Au + Au collisions at √[square root]sNN=200 GeV are presented. For associated particles at higher pT [rho tau] ≳2.5 GeV/c, narrow correlation peaks are seen in d+ Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT [rho tau] <2 GeV/c, a large enhancement of the near- (Δϕ~0[delta phi~0]) and away-side (Δϕ~π [delta phi~pi]) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d+ Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Δϕ~π [delta phi~pi] in central Au + Au collisions. United States. Dept. of Energy. Office of Nuclear Physics United States. Dept. of Energy. Office of High Energy Physics. National Science Foundation (U.S.) Alfred P. Sloan Foundation Deutsche Forschungsgemeinschaft (DFG) Institut national de physique nucléaire et de physique des particules Science and Technology Facilities Council (Great Britain) Engineering and Physical Sciences Research Council Fundação de Amparo à Pesquisa do Estado de São Paulo Conselho Nacional de Pesquisas (Brazil) Ministry of Education and Science of the Russian Federation National Natural Science Foundation (China) Chinese Academy of Sciences China. Ministry of Science and Technology. China. Ministry of Energy Czech Science Foundation MSMT of the Czech Republic Foundation for Fundamental Research on Matter (Netherlands) NWO of the Netherlands India. Dept. of Atomic Energy India. Dept. of Science and Technology Council of Scientific & Industrial Research (India) Poland. Ministry of Science and Higher Education Korean Research Foundation Ministry of Science, Education and Sports of the Republic of Croatia Russian Ministry of Science and Technology RosAtom of Russia 2011-02-03T17:41:28Z 2011-02-03T17:41:28Z 2010-08 2010-04 Article http://purl.org/eprint/type/JournalArticle 0556-2813 http://hdl.handle.net/1721.1/60884 Aggarwal, M. et al. “Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at sqrt[s_{NN}]=200 GeV measured at the STAR detector.” Physical Review C 82.2 (2010): n. pag. © 2010 The American Physical Society https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 en_US http://dx.doi.org/10.1103/PhysRevC.82.024912 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 Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd Hoffman, Alan Michael Milner, Richard G Redwine, Robert P van Nieuwenhuizen, Gerrit J Walker, Matthew H Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title | Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title_full | Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title_fullStr | Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title_full_unstemmed | Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title_short | Azimuthal di-hadron correlations in d+ Au and Au + Au collisions at √sNN=200 GeV measured at the STAR detector |
| title_sort | azimuthal di hadron correlations in d au and au au collisions at √snn 200 gev measured at the star detector |
| url | http://hdl.handle.net/1721.1/60884 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0001-5839-707X https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 |
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