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 p
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.
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Metadaten
Author:Laura Tolos, Jürgen Schaffner-Bielich, Horst Stöcker
URN:urn:nbn:de:hebis:30-20295
Document Type:Preprint
Language:English
Date of Publication (online):2005/10/31
Year of first Publication:2005
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/10/31
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 (FIAS)
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):License Logo Veröffentlichungsvertrag für Publikationen

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