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.

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Metadaten
Author:Laura TolósORCiD, Jürgen Schaffner-BielichORCiDGND, Horst StöckerORCiDGND
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:Universitätsbibliothek Johann Christian Senckenberg
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 / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 14.00.00 Properties of specific particles / 14.20.-c Baryons (including antiparticles) / 14.20.Gk Baryon resonances with <i>S</i>=0
10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 14.00.00 Properties of specific particles / 14.40.-n Mesons / 14.40.Lb Charmed mesons
Licence (German):License LogoDeutsches Urheberrecht