Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach
As one of the possible signals for the whereabouts of the critical point on the QCD phase diagram, recently, the multiplicity fluctuations in heavy-ion collisions have aroused much attention. It is a crucial observation of the Beam Energy Scan program of the Relativistic Heavy Ion Collider. In this...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2020/6504290 |
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| author | Hong-Hao Ma Kai Lin Wei-Liang Qian Bin Wang |
| author_facet | Hong-Hao Ma Kai Lin Wei-Liang Qian Bin Wang |
| author_sort | Hong-Hao Ma |
| collection | DOAJ |
| description | As one of the possible signals for the whereabouts of the critical point on the QCD phase diagram, recently, the multiplicity fluctuations in heavy-ion collisions have aroused much attention. It is a crucial observation of the Beam Energy Scan program of the Relativistic Heavy Ion Collider. In this work, we investigate the centrality dependence of the multiplicity fluctuations regarding the recent measurements from STAR Collaboration. By employing a hydrodynamical approach, the present study is dedicated to the noncritical aspects of the phenomenon. To be specific, in addition to the thermal fluctuations, finite volume corrections, and resonance decay at the freeze-out surface, the model is focused on the properties of the hydrodynamic expansion of the system and the event-by-event initial fluctuations. It is understood that the real signal of the critical point can only be obtained after appropriately subtracting the background; the latter is investigated in the present work. Besides the experimental data, our results are also compared to those of the hadronic resonance gas, as well as the transport models. |
| format | Article |
| id | doaj-art-c4bc0b4e1723440bbd6f447ef1a7c7a8 |
| institution | DOAJ |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-c4bc0b4e1723440bbd6f447ef1a7c7a82025-08-20T03:23:06ZengWileyAdvances in High Energy Physics1687-73571687-73652020-01-01202010.1155/2020/65042906504290Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical ApproachHong-Hao Ma0Kai Lin1Wei-Liang Qian2Bin Wang3School of Physical Science and Technology, Yangzhou University, 225002 Yangzhou, Jiangsu, ChinaHubei Subsurface Multi-Scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, 430074 Wuhan, Hubei, ChinaSchool of Physical Science and Technology, Yangzhou University, 225002 Yangzhou, Jiangsu, ChinaSchool of Physical Science and Technology, Yangzhou University, 225002 Yangzhou, Jiangsu, ChinaAs one of the possible signals for the whereabouts of the critical point on the QCD phase diagram, recently, the multiplicity fluctuations in heavy-ion collisions have aroused much attention. It is a crucial observation of the Beam Energy Scan program of the Relativistic Heavy Ion Collider. In this work, we investigate the centrality dependence of the multiplicity fluctuations regarding the recent measurements from STAR Collaboration. By employing a hydrodynamical approach, the present study is dedicated to the noncritical aspects of the phenomenon. To be specific, in addition to the thermal fluctuations, finite volume corrections, and resonance decay at the freeze-out surface, the model is focused on the properties of the hydrodynamic expansion of the system and the event-by-event initial fluctuations. It is understood that the real signal of the critical point can only be obtained after appropriately subtracting the background; the latter is investigated in the present work. Besides the experimental data, our results are also compared to those of the hadronic resonance gas, as well as the transport models.http://dx.doi.org/10.1155/2020/6504290 |
| spellingShingle | Hong-Hao Ma Kai Lin Wei-Liang Qian Bin Wang Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach Advances in High Energy Physics |
| title | Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach |
| title_full | Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach |
| title_fullStr | Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach |
| title_full_unstemmed | Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach |
| title_short | Centrality Dependence of Multiplicity Fluctuations from a Hydrodynamical Approach |
| title_sort | centrality dependence of multiplicity fluctuations from a hydrodynamical approach |
| url | http://dx.doi.org/10.1155/2020/6504290 |
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