Chemical Evolution of Strongly Interacting Quark-Gluon Plasma
At very initial stage of relativistic heavy ion collisions a wave of quark-gluon matter is produced from the break-up of the strong color electric field and then thermalizes at a short time scale (~1 fm/c). However, the quark-gluon plasma (QGP) system is far out of chemical equilibrium, especially f...
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Wiley
2014-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/952607 |
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| author | Ying-Hua Pan Wei-Ning Zhang |
| author_facet | Ying-Hua Pan Wei-Ning Zhang |
| author_sort | Ying-Hua Pan |
| collection | DOAJ |
| description | At very initial stage of relativistic heavy ion collisions a wave of quark-gluon matter is produced from the break-up of the strong color electric field and then thermalizes at a short time scale (~1 fm/c). However, the quark-gluon plasma (QGP) system is far out of chemical equilibrium, especially for the heavy quarks which are supposed to reach chemical equilibrium much late. In this paper a continuing quark production picture for strongly interacting QGP system is derived, using the quark number susceptibilities and the equation of state; both of them are from the results calculated by the Wuppertal-Budapest lattice QCD collaboration. We find that the densities of light quarks increase by 75% from the temperature T=400 MeV to T=150 MeV, while the density of strange quark annihilates by 18% in the temperature region. We also offer a discussion on how this late production of quarks affects the final charge-charge correlations. |
| format | Article |
| id | doaj-art-4bea019bfaf64092b645a14dd3452183 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-4bea019bfaf64092b645a14dd34521832025-02-03T05:46:46ZengWileyAdvances in High Energy Physics1687-73571687-73652014-01-01201410.1155/2014/952607952607Chemical Evolution of Strongly Interacting Quark-Gluon PlasmaYing-Hua Pan0Wei-Ning Zhang1Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150006, ChinaDepartment of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150006, ChinaAt very initial stage of relativistic heavy ion collisions a wave of quark-gluon matter is produced from the break-up of the strong color electric field and then thermalizes at a short time scale (~1 fm/c). However, the quark-gluon plasma (QGP) system is far out of chemical equilibrium, especially for the heavy quarks which are supposed to reach chemical equilibrium much late. In this paper a continuing quark production picture for strongly interacting QGP system is derived, using the quark number susceptibilities and the equation of state; both of them are from the results calculated by the Wuppertal-Budapest lattice QCD collaboration. We find that the densities of light quarks increase by 75% from the temperature T=400 MeV to T=150 MeV, while the density of strange quark annihilates by 18% in the temperature region. We also offer a discussion on how this late production of quarks affects the final charge-charge correlations.http://dx.doi.org/10.1155/2014/952607 |
| spellingShingle | Ying-Hua Pan Wei-Ning Zhang Chemical Evolution of Strongly Interacting Quark-Gluon Plasma Advances in High Energy Physics |
| title | Chemical Evolution of Strongly Interacting Quark-Gluon Plasma |
| title_full | Chemical Evolution of Strongly Interacting Quark-Gluon Plasma |
| title_fullStr | Chemical Evolution of Strongly Interacting Quark-Gluon Plasma |
| title_full_unstemmed | Chemical Evolution of Strongly Interacting Quark-Gluon Plasma |
| title_short | Chemical Evolution of Strongly Interacting Quark-Gluon Plasma |
| title_sort | chemical evolution of strongly interacting quark gluon plasma |
| url | http://dx.doi.org/10.1155/2014/952607 |
| work_keys_str_mv | AT yinghuapan chemicalevolutionofstronglyinteractingquarkgluonplasma AT weiningzhang chemicalevolutionofstronglyinteractingquarkgluonplasma |