Photoproduction of $ω$ and $ω$ in the Nuclear Medium
| dc.creator | Oset, E. | |
| dc.creator | Kaskulov, M. | |
| dc.creator | Nagahiro, H. | |
| dc.creator | Hernandez, E. | |
| dc.creator | Hirenzaki, S. | |
| dc.date | 2007-10-16 | |
| dc.date.accessioned | 2026-07-07T08:36:37Z | |
| dc.date.available | 2026-07-07T08:36:37Z | |
| dc.description | We reanalyze data from ELSA on $ω$ production in nuclei, from where claims of a large shift of the mass were made earlier, which are tied to a certain election of the background in nuclei, very different in shape to the one on the proton. The reanalysis shows that the data demand a very large width of the $ω$ in the medium, with no need for a shift of the mass, for which the experiment is quite insensitive. We study possible $ω$ bound states in the nucleus and find that, even assuming a small width, they could not be observed with the present ELSA resolution. Finally we show that, due to the interplay of background and $ω$ signal, a two bump structure appears with the ELSA set up for the $(γ,p)$ reaction that should not be misidentified with a signal of a possible $ω$ bound state in the nucleus. | |
| dc.description | Talk at the MENU2007 Conference | |
| dc.identifier | https://arxiv.org/abs/0710.3033 | |
| dc.identifier | http://arxiv.org/abs/0710.3033 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/140127 | |
| dc.subject | Nuclear Theory | |
| dc.title | Photoproduction of $ω$ and $ω$ in the Nuclear Medium | |
| dc.type | text |