Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 25: Hadron Structure and Spectroscopy II

HK 25.2: Talk

Tuesday, March 17, 2009, 14:15–14:30, H-ZO 30

In-medium properties of charm at FAIR — •Laura Tolos — Theory Group, KVI, University of Groningen, Groningen, The Netherlands

We study the properties of charm mesons in hot and dense matter within a self-consistent coupled-channel approach for the experimental conditions of density and temperature expected for the CBM experiment at FAIR/GSI. The in-medium solution at finite temperature accounts for Pauli blocking effects, mean-field binding on all the baryons involved, and meson self-energies. The dynamically-generated Λ_c(2593) and Σ_c(2880) resonances remain close to their free-space position while acquiring a remarkable width. As a result, the D meson spectral density shows a single pronounced peak for energies close to the D meson free-space mass that broadens with increasing matter density with an extended tail particularly towards lower energies. We also discuss the implications for the D_s0(2317), D₀(2400) and the predicted X(3700) resonances at FAIR energies.