DS Mesons in Asymmetric Hot and Dense Hadronic Matter
The in-medium properties of DS mesons are investigated within the framework of an effective hadronic model, which is a generalization of a chiral SU(3) model, to SU(4), in order to study the interactions of the charmed hadrons. In the present work, the DS mesons are observed to experience net attrac...
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| 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/10.1155/2015/697514 |
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| author | Divakar Pathak Amruta Mishra |
| author_facet | Divakar Pathak Amruta Mishra |
| author_sort | Divakar Pathak |
| collection | DOAJ |
| description | The in-medium properties of DS mesons are investigated within the framework of an effective hadronic model, which is a generalization of a chiral SU(3) model, to SU(4), in order to study the interactions of the charmed hadrons. In the present work, the DS mesons are observed to experience net attractive interactions in a dense hadronic medium, hence reducing the masses of the DS+ and DS- mesons from the vacuum values. While this conclusion holds in both nuclear and hyperonic media, the magnitude of the mass drop is observed to intensify with the inclusion of strangeness in the medium. Additionally, in hyperonic medium, the mass degeneracy of the DS mesons is observed to be broken, due to opposite signs of the Weinberg-Tomozawa interaction term in the Lagrangian density. Along with the magnitude of the mass drops, the mass splitting between DS+ and DS- mesons is also observed to grow with an increase in baryonic density and strangeness content of the medium. However, all medium effects analyzed are found to be weakly dependent on isospin asymmetry and temperature. We discuss the possible implications emanating from this analysis, which are all expected to make a significant difference to observables in heavy ion collision experiments, especially the upcoming Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR), GSI, where matter at high baryonic densities is planned to be produced. |
| format | Article |
| id | doaj-art-90f9ed4269394b1aa9bdbb3536eb2ecb |
| 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-90f9ed4269394b1aa9bdbb3536eb2ecb2025-02-03T01:02:53ZengWileyAdvances in High Energy Physics1687-73571687-73652015-01-01201510.1155/2015/697514697514DS Mesons in Asymmetric Hot and Dense Hadronic MatterDivakar Pathak0Amruta Mishra1Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, IndiaThe in-medium properties of DS mesons are investigated within the framework of an effective hadronic model, which is a generalization of a chiral SU(3) model, to SU(4), in order to study the interactions of the charmed hadrons. In the present work, the DS mesons are observed to experience net attractive interactions in a dense hadronic medium, hence reducing the masses of the DS+ and DS- mesons from the vacuum values. While this conclusion holds in both nuclear and hyperonic media, the magnitude of the mass drop is observed to intensify with the inclusion of strangeness in the medium. Additionally, in hyperonic medium, the mass degeneracy of the DS mesons is observed to be broken, due to opposite signs of the Weinberg-Tomozawa interaction term in the Lagrangian density. Along with the magnitude of the mass drops, the mass splitting between DS+ and DS- mesons is also observed to grow with an increase in baryonic density and strangeness content of the medium. However, all medium effects analyzed are found to be weakly dependent on isospin asymmetry and temperature. We discuss the possible implications emanating from this analysis, which are all expected to make a significant difference to observables in heavy ion collision experiments, especially the upcoming Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR), GSI, where matter at high baryonic densities is planned to be produced.http://dx.doi.org/10.1155/2015/697514 |
| spellingShingle | Divakar Pathak Amruta Mishra DS Mesons in Asymmetric Hot and Dense Hadronic Matter Advances in High Energy Physics |
| title | DS Mesons in Asymmetric Hot and Dense Hadronic Matter |
| title_full | DS Mesons in Asymmetric Hot and Dense Hadronic Matter |
| title_fullStr | DS Mesons in Asymmetric Hot and Dense Hadronic Matter |
| title_full_unstemmed | DS Mesons in Asymmetric Hot and Dense Hadronic Matter |
| title_short | DS Mesons in Asymmetric Hot and Dense Hadronic Matter |
| title_sort | ds mesons in asymmetric hot and dense hadronic matter |
| url | http://dx.doi.org/10.1155/2015/697514 |
| work_keys_str_mv | AT divakarpathak dsmesonsinasymmetrichotanddensehadronicmatter AT amrutamishra dsmesonsinasymmetrichotanddensehadronicmatter |