2007/11/21 by Laura Tolos, Laura Tolós, À. Ramos +6
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.0711.3410
8 pages, 5 figures, to appear in the proceedings of XII International Conference on Hadron Spectroscopy (HADRON07), Frascati, Italy, 8-13 October 2007
arxiv created 2007/11/21 · openalex publication_date 2007/11/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A self-consistent coupled-channel approach is used to study the properties of D and D mesons in hot dense matter. The starting point is a broken SU(4) s-wave Tomozawa-Weinberg DN ( DN) interaction supplemented by an attractive isoscalar-scalar term. The Pauli blocking effects, baryon mean-field bindings, and π and open-charm meson self-energies are incorporated in dense matter at finite temperature. In the DN sector, the dynamically generated Λc and Σc resonances remain close to their free space position while acquiring a remarkable width because of the thermal smearing of Pauli blocking. Therefore, the D meson spectral density shows a single pronounced quasiparticle peak close to the free mass, that broadens with increasing density, and a low energy tail associated to smeared Λc N-1, Σc N-1 configurations. In the DN case, the low-density approximation to the repulsive D self-energy is found unreliable already at subsaturation densities. From this study we speculate the possible existence of D-mesic nuclei. We also discuss the consequences for J/Ψ suppression at FAIR.