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Mass modification of D-meson in hot hadronic matter | | A.Mishra
; E.L. Bratkovskaya
; J. Schaffner-Bielich
; S. Schramm
; H. Stöcker
; | | Date: |
28 Aug 2003 | | Journal: | Phys.Rev. C69 (2004) 015202 | | Subject: | nucl-th hep-ph | | Abstract: | We evaluate the in-medium $D$ and $ar D$-meson masses in hot hadronic matter induced by interactions with the light hadron sector described in a chiral SU(3) model. The effective 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 ($Psi^prime$, $chi_c$, $J/Psi$) to $D ar D$ pairs in the thermal medium. The effects 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. | | Source: | arXiv, nucl-th/0308082 | | Services: | Forum | Review | PDF | Favorites | |
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