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.

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Author:Amruta Mishra, Elena L. BratkovskayaORCiDGND, Jürgen Schaffner-BielichORCiDGND, Stefan SchrammGND, Horst StöckerORCiDGND
Document Type:Preprint
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
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht