Existence of the $σ$-meson below 1 GeV and $f_0(1500)$ glueball
| dc.creator | Surovtsev, Yu. S. | |
| dc.creator | Krupa, D. | |
| dc.creator | Nagy, M. | |
| dc.date | 2000-08-30 | |
| dc.date.accessioned | 2026-07-07T10:32:43Z | |
| dc.date.available | 2026-07-07T10:32:43Z | |
| dc.description | On the basis of a simultaneous description of the isoscalar s-wave channel of the $ππ$ scattering (from the threshold up to 1.9 GeV) and of the $ππ\to K\bar{K}$ process (from the threshold to $\sim$ 1.4 GeV) in the model-independent approach, a confirmation of the $σ$-meson at $\sim$ 665 MeV and an indication for the glueball nature of the $f_0(1500)$ state are obtained. It is shown that the large $ππ$-background, usually obtained, combines, in reality, the influence of the left-hand branch-point and the contribution of a very wide resonance at $\sim$ 665 MeV. The coupling constants of the observed states with the $ππ$ and $K\bar{K}$ systems and lengths of the $ππ$ and $K\bar{K}$ scattering are obtained. | |
| dc.description | 13 pages, 3 figures, LaTex; submitted to Physics Letters B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0008317 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0008317 | |
| dc.identifier | Phys.Rev.D63:054024,2001 | |
| dc.identifier | doi:10.1103/PhysRevD.63.054024 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178851 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Existence of the $σ$-meson below 1 GeV and $f_0(1500)$ glueball | |
| dc.type | text |