D-mesons: In-medium effects at FAIR
The D-meson spectral density at finite temperature is obtained within a self-consistent coupled-channel approach. For the bare meson-baryon interaction, a separable potential is taken, whose parameters are fixed by the position and width of the Lambda_c (2593) resonance. The quasiparticle peak stays close to the free D-meson mass, indicating a small change in the effective mass for finite density and temperature. However, the considerable width of the spectral density implies physics beyond the quasiparticle approach. Our results indicate that the medium modifications for the D-mesons in nucleus-nucleus collisions at FAIR (GSI) will be dominantly on the width and not, as previously expected, on the mass.
| Author: | Laura Tolos, Jürgen Schaffner-Bielich, Horst Stöcker |
|---|---|
| URN: | urn:nbn:de:hebis:30-20295 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 31.10.2005 |
| Year of first Publication: | 2005 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | D-meson spectral density; DN interaction; Lambda-c(2593) resonance; coupled-channel self-consistent calculation; finite temperature |
| HeBIS PPN: | 190636939 |
| Institutes: | Physik |
| Frankfurt Institute for Advanced Studies | |
| Dewey Decimal Classification: | 530 Physik |
| PACS-Classification: | 14.20.Gk Baryon resonances with <i>S</i>=0 |
| 14.40.Lb Charmed mesons | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
