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. BratkovskayaORCiDGND, Jürgen Schaffner-BielichORCiDGND, Stefan SchrammGND, Horst StöckerORCiDGND |
---|---|
URN: | urn:nbn:de:hebis:30-20842 |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2005/11/10 |
Year of first Publication: | 2003 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2005/11/10 |
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 / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |