Lightest scalar in the SU_L(2)*SU_R(2) linear σmodel
| dc.creator | Achasov, N. N. | |
| dc.creator | Shestakov, G. N. | |
| dc.date | 2007-04-18 | |
| dc.date | 2007-08-18 | |
| dc.date.accessioned | 2026-07-07T10:35:36Z | |
| dc.date.available | 2026-07-07T10:35:36Z | |
| dc.description | We consider the lightest scalar meson in the frame of the $SU_L(2)\times SU_R(2)$ linear $σ$ model, keeping in mind that this model could be the low energy realization of the two-flavour QCD. We show that the $σ$ field is described by its four-quark component at least in the $σ$ resonance energy (virtuality) region and the $σ\toγγ$ decay is the four quark transition. We emphasize that residues of the $σ$ pole in the $ππ\toππ$ and $γγ\toππ$ amplitudes do not give an idea about the $σ$ meson nature, and the progress in studying the $σ$ meson production mechanisms in different processes could essentially further us in understanding its nature. | |
| dc.description | 10 pages, 3 figures, English improved, PACS numbers changed, two Refs. added, E-mail addresses removed and Ref. [1] shortened for the overrun of the article length allowable in Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/0704.2368 | |
| dc.identifier | http://arxiv.org/abs/0704.2368 | |
| dc.identifier | Phys.Rev.Lett.99:072001,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.99.072001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179790 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Lightest scalar in the SU_L(2)*SU_R(2) linear σmodel | |
| dc.type | text |