Two photon decays of scalar mesons in the quark NJL model
| dc.creator | Kalinovsky, Yu. L. | |
| dc.creator | Volkov, M. K. | |
| dc.date | 2008-09-10 | |
| dc.date.accessioned | 2026-07-07T10:02:01Z | |
| dc.date.available | 2026-07-07T10:02:01Z | |
| dc.description | Two photon decays of scalar mesons f_0(980), a_0(980), σ(600) in the quark Nambu - Jona - Lasinio (NJL) model are calculated. The contributions of the meson loops are taken into account along with the quark loops (Hartree - Fock approximation). This corresponds to the next order of the 1/N_c expansion, where N_c=3 is the number of quark colors. It is shown that the meson and quark loops give comparable contributions to the amplitude. Moreover, in the process f_0(980)-> γγthe kaon loop plays the dominant role. A similar situation takes place in the decay ϕ-> f_0(980) γ\cite{physrev}. Our results are in satisfactory agreement with the recent experimental data. | |
| dc.description | 6 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/0809.1795 | |
| dc.identifier | http://arxiv.org/abs/0809.1795 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/168830 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Two photon decays of scalar mesons in the quark NJL model | |
| dc.type | text |