Coupled-channel study of baryon resonances with charm
| dc.creator | Hofmann, Julian | |
| dc.creator | Lutz, Matthias F. M. | |
| dc.date | 2005-10-31 | |
| dc.date.accessioned | 2026-07-07T06:48:20Z | |
| dc.date.available | 2026-07-07T06:48:20Z | |
| dc.description | Identifying a zero-range exchange of vector mesons as the driving force for the s-wave scattering of pseudo-scalar mesons off the baryon ground states, a rich spectrum of molecules is formed. We argue that chiral symmetry and large-$N_c$ considerations determine that part of the interaction which generates the spectrum. A bound state with exotic quantum numbers is predicted at mass 2.78 GeV. It couples strongly to the $(\bar D_s N),(\bar D Λ),(\bar D Σ)$ channels. A further charm minus-one system is predicted at mass 2.84 GeV as a result of $(\bar D_s Λ), (\bar D Ξ)$ interactions. The two so far observed s-wave baryons with charm one are recovered. We argue that the $Λ_c(2880)$ is not a s-wave state. In addition to those states we predict the existence of about ten narrow s-wave baryon states with masses below 3 GeV. A triplet of crypto-exotic states decaying dominantly into channels with an $η'$ is obtained with masses 4.24 GeV and 4.44 GeV. | |
| dc.description | 5 pages, talk presented at HADRON 05 | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0510091 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0510091 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/103960 | |
| dc.subject | Nuclear Theory | |
| dc.title | Coupled-channel study of baryon resonances with charm | |
| dc.type | text |