Searching for the Scalar Glueball
| dc.creator | Ochs, Wolfgang | |
| dc.date | 2008-05-07 | |
| dc.date.accessioned | 2026-07-07T11:50:37Z | |
| dc.date.available | 2026-07-07T11:50:37Z | |
| dc.description | Existence of gluonic resonances is among the early expectations of QCD. Today, QCD calculations predict the lightest glueball to be a scalar state with mass within a range of about 900-1700 MeV but there is no consensus about its experimental evidence. In a re-analysis of the phase shifts for pi pi scattering up to 1800 MeV where such states should show up we find the broad resonance f_0(600)/σcontributing to the full mass range and the narrow f_0(980) and f_0(1500) but no evidence for f_0(1370). Phenomenological arguments for the broad state to be a glueball are recalled. It is argued that the large radiative width of f_0(600)/σreported recently is not in contradiction to this hypothesis but is mainly due to pi pi rescattering. The small ``direct'' radiative component is consistent with QCD sum rule predictions for the light glueball. | |
| dc.description | 6 pages, 1 figure, Contribution to the Proceedings of the Workshop on Scalar Mesons and Related Topics Honoring Michael D. Scadron's 70th Birthday, 11-16 February 2008, Lisbon, Portugal | |
| dc.identifier | https://arxiv.org/abs/0805.0997 | |
| dc.identifier | http://arxiv.org/abs/0805.0997 | |
| dc.identifier | AIPConf.Proc.1030:207-212,2008 | |
| dc.identifier | doi:10.1063/1.2973500 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203615 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Searching for the Scalar Glueball | |
| dc.type | text |