Decays of sigma, kappa, a0(980) and fo(980)
| dc.creator | Bugg, D. V. | |
| dc.date | 2006-03-12 | |
| dc.date | 2006-08-27 | |
| dc.date.accessioned | 2026-07-07T12:25:27Z | |
| dc.date.available | 2026-07-07T12:25:27Z | |
| dc.description | Ratios of coupling constants for these decays are compared with q-qbar predictions and Jaffe's 4-quark model. In both models, the predicted ratio g^2(kappa -> K-pi)/ g^2(sigma -> pi-pi) is much too small. Also, for q-qbar, the predicted ratio g^2(kappa -> K-eta ')/g^2(kappa -> K-pi) is much larger than observed. Both models fail for g^2(fo -> KK)/g^2(a0 -> KK). This ratio requires that fo has a dominant KK component. It arises naturally because the fo pole lies very close to the KK threshold, giving its wave function a long KK tail. | |
| dc.description | 13 pages, 2 figures, Small addition on systematic errors | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0603089 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0603089 | |
| dc.identifier | Eur.Phys.J.C47:57-64,2006 | |
| dc.identifier | doi:10.1140/epjc/s2006-02561-3 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214614 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Decays of sigma, kappa, a0(980) and fo(980) | |
| dc.type | text |