Mass modification of D-meson in hot hadronic matter
We evaluate the in-medium D and -meson masses in hot hadronic matter induced by interactions with the light hadron sector described in a chiral SU(3) model. The e ective Lagrangian approach is generalized to SU(4) to include charmed mesons. We find that the D-mass drops substantially at finite temperatures and densities, which open the channels of the decay of the charmonium states ( 2, c, J/ ) to D pairs in the thermal medium. The e ects of vacuum polarisations from the baryon sector on the medium modification of the D-meson mass relative to those obtained in the mean field approximation are investigated. The results of the present work are compared to calculations based on the QCD sum-rule approach, the quark-meson coupling model, chiral perturbation theory, as well as to studies of quarkonium dissociation using heavy quark potential from lattice QCD.
| Author: | Amruta Mishra, Elena L. Bratkovskaya, Jürgen Schaffner-Bielich, Stefan Schramm, Horst Stöcker |
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| URN: | urn:nbn:de:hebis:30-20842 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 10.11.2005 |
| Year of first Publication: | 2003 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | Baryon ; Masse; heiße hadronic Materie ; quark gluon plasma baryon ; hot hadronic matter ; masse; quark gluon plasma |
| Source: | Phys.Rev.C69:015202,2004. [nucl-th/0308082] Version 2 |
| HeBIS PPN: | 18885987X |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
