On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model
We propose a new revised Landau hydrodynamic model to study systematically the pseudorapidity distributions of charged particles produced in heavy ion collisions over an energy range from a few GeV to a few TeV per nucleon pair. The interacting system is divided into three sources, namely, the centr...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/184713 |
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| author | Li-Na Gao Fu-Hu Liu |
| author_facet | Li-Na Gao Fu-Hu Liu |
| author_sort | Li-Na Gao |
| collection | DOAJ |
| description | We propose a new revised Landau hydrodynamic model to study systematically the pseudorapidity distributions of charged particles produced in heavy ion collisions over an energy range from a few GeV to a few TeV per nucleon pair. The interacting system is divided into three sources, namely, the central, target, and projectile sources, respectively. The large central source is described by the Landau hydrodynamic model and further revised by the contributions of the small target/projectile sources. The modeling results are in agreement with the available experimental data at relativistic heavy ion collider, large hadron collider, and other energies for different centralities. The value of square speed of sound parameter in different collisions has been extracted by us from the widths of rapidity distributions. Our results show that, in heavy ion collisions at energies of the two colliders, the central source undergoes a phase transition from hadronic gas to quark-gluon plasma liquid phase; meanwhile, the target/projectile sources remain in the state of hadronic gas. The present work confirms that the quark-gluon plasma is of liquid type rather than being of a gas type. |
| format | Article |
| id | doaj-art-f141a4bd7e84408e97ccfe765a763147 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-f141a4bd7e84408e97ccfe765a7631472025-02-03T01:00:24ZengWileyAdvances in High Energy Physics1687-73571687-73652015-01-01201510.1155/2015/184713184713On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic ModelLi-Na Gao0Fu-Hu Liu1Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaInstitute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaWe propose a new revised Landau hydrodynamic model to study systematically the pseudorapidity distributions of charged particles produced in heavy ion collisions over an energy range from a few GeV to a few TeV per nucleon pair. The interacting system is divided into three sources, namely, the central, target, and projectile sources, respectively. The large central source is described by the Landau hydrodynamic model and further revised by the contributions of the small target/projectile sources. The modeling results are in agreement with the available experimental data at relativistic heavy ion collider, large hadron collider, and other energies for different centralities. The value of square speed of sound parameter in different collisions has been extracted by us from the widths of rapidity distributions. Our results show that, in heavy ion collisions at energies of the two colliders, the central source undergoes a phase transition from hadronic gas to quark-gluon plasma liquid phase; meanwhile, the target/projectile sources remain in the state of hadronic gas. The present work confirms that the quark-gluon plasma is of liquid type rather than being of a gas type.http://dx.doi.org/10.1155/2015/184713 |
| spellingShingle | Li-Na Gao Fu-Hu Liu On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model Advances in High Energy Physics |
| title | On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model |
| title_full | On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model |
| title_fullStr | On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model |
| title_full_unstemmed | On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model |
| title_short | On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model |
| title_sort | on pseudorapidity distribution and speed of sound in high energy heavy ion collisions based on a new revised landau hydrodynamic model |
| url | http://dx.doi.org/10.1155/2015/184713 |
| work_keys_str_mv | AT linagao onpseudorapiditydistributionandspeedofsoundinhighenergyheavyioncollisionsbasedonanewrevisedlandauhydrodynamicmodel AT fuhuliu onpseudorapiditydistributionandspeedofsoundinhighenergyheavyioncollisionsbasedonanewrevisedlandauhydrodynamicmodel |