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D-mesons: In-medium effects at FAIR
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D-mesons: In-medium effects at FAIR
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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. Furthermore, the spectral density develops a considerable width due to the coupled-channel structure. 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.
Forward citations
Cited by 1 Pith paper
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Towards compressed baryonic matter densities: D meson diffusion
Using relaxation-time kinetic theory with a chiral hadronic model, the authors estimate that D meson spatial diffusion in dense nuclear matter decreases rapidly in a dilute-gas regime and mildly in a degenerate-gas regime.
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