Open charm in nuclear matter at finite temperature
| dc.creator | Tolos, Laura | |
| dc.creator | Ramos, Angels | |
| dc.creator | Mizutani, Tetsuro | |
| dc.date | 2007-10-14 | |
| dc.date | 2008-01-29 | |
| dc.date.accessioned | 2026-07-07T11:12:13Z | |
| dc.date.available | 2026-07-07T11:12:13Z | |
| dc.description | We study the properties of open-charm mesons ($D$ and $\bar {D}$) in nuclear matter at finite temperature within a self-consistent coupled-channel approach. The meson-baryon interactions are adopted from a type of broken SU(4) s-wave Tomozawa-Weinberg terms supplemented by an attractive scalar-isoscalar attraction. The in-medium solution at finite temperature incorporates Pauli blocking effects, mean-field binding on all the baryons involved, and $π$ and open-charm meson self-energies in a self-consistent manner. In the $DN$ sector, the $Λ_c$ and $Σ_c$ resonances, generated dynamically at 2593 MeV and 2770 MeV in free space, remain close to their free-space position while acquiring a remarkable width due to the thermal smearing of Pauli blocking as well as from the nuclear matter density effects. 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. The $\bar D$ potential shows a moderate repulsive behavior coming from the dominant I=1 contribution of the $\bar D N$ interaction. The low-density theorem is, however, not a good approximation for the $\bar D$ self-energy in spite of the absence of resonance-hole contributions close to threshold in this case. We speculate the possibility of $D$-mesic nuclei as well as discuss some consequences for the $J/Ψ$ suppression in heavy-ion collisions, in particular for the future CBM experiment at FAIR. | |
| dc.description | 24 pages, 6 figures, 1 table, published in Phys. Rev. C | |
| dc.identifier | https://arxiv.org/abs/0710.2684 | |
| dc.identifier | http://arxiv.org/abs/0710.2684 | |
| dc.identifier | Phys.Rev.C77:015207,2008 | |
| dc.identifier | doi:10.1103/PhysRevC.77.015207 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191309 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Open charm in nuclear matter at finite temperature | |
| dc.type | text |