Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions
Rapidity-odd directed flow (v[subscript 1]) measurements for charged pions, protons, and antiprotons near midrapidity (y = 0) are reported in √s[subscript NN] = 7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At int...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/89208 https://orcid.org/0000-0002-0816-200X |
| _version_ | 1811092429395197952 |
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| author | Stevens, Justin van Nieuwenhuizen, Gerrit J |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Stevens, Justin van Nieuwenhuizen, Gerrit J |
| author_sort | Stevens, Justin |
| collection | MIT |
| description | Rapidity-odd directed flow (v[subscript 1]) measurements for charged pions, protons, and antiprotons near midrapidity (y = 0) are reported in √s[subscript NN] = 7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|[subscript y=0] shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton dv1/dy|[subscript y=0] changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations. |
| first_indexed | 2024-09-23T15:18:02Z |
| format | Article |
| id | mit-1721.1/89208 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:18:02Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/892082023-02-26T07:57:48Z Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions Stevens, Justin van Nieuwenhuizen, Gerrit J Massachusetts Institute of Technology. Laboratory for Nuclear Science Stevens, Justin van Nieuwenhuizen, Gerrit Jan Rapidity-odd directed flow (v[subscript 1]) measurements for charged pions, protons, and antiprotons near midrapidity (y = 0) are reported in √s[subscript NN] = 7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|[subscript y=0] shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton dv1/dy|[subscript y=0] changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations. United States. Dept. of Energy. Office of Nuclear Physics United States. Dept. of Energy. Office of High Energy Physics National Science Foundation (U.S.) 2014-09-05T17:34:42Z 2014-09-05T17:34:42Z 2014-04 2014-01 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/89208 Adamczyk, L., J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, et al. “Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions.” Physical Review Letters 112, no. 16 (April 2014). © 2014 American Physical Society https://orcid.org/0000-0002-0816-200X en_US http://dx.doi.org/10.1103/PhysRevLett.112.162301 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 American Physical Society |
| spellingShingle | Stevens, Justin van Nieuwenhuizen, Gerrit J Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title | Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title_full | Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title_fullStr | Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title_full_unstemmed | Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title_short | Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions |
| title_sort | beam energy dependence of the directed flow of protons antiprotons and pions in au au collisions |
| url | http://hdl.handle.net/1721.1/89208 https://orcid.org/0000-0002-0816-200X |
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