Experimental disagreements with Extended Unitarity
| dc.creator | Bugg, D. V. | |
| dc.date | 2008-01-12 | |
| dc.date.accessioned | 2026-07-07T11:14:03Z | |
| dc.date.available | 2026-07-07T11:14:03Z | |
| dc.description | In production processes, e.g. J/Psi -> omega-pi-pi or pbar-p -> 3pi, the sigma and fo(980) overlap in the same partial wave. The conjecture of Extended Unitarity (EU) states that the pi-pi pair should have the same phase variation as pi-pi elastic scattering. This is an extension of Watson's theorem beyond its original derivation, which stated only that the s-dependence of a single resonance should be universal. The prediction of EU is that the deep dip observed in pi-pi elastic scattering close to 1 GeV should also appear in production data. Four sets of data disagree with this prediction. All require different relative magnitudes of sigma and fo(980). That being so, a fresh conjecture is to rewrite the 2-body unitarity relation for production in terms of observed magnitudes. This leads to a prediction different to EU. Central production data from the AFS experiment fit naturally to this hypothesis. | |
| dc.description | 24 pages, 12 figures. To be published in Euro. Phys. J C | |
| dc.identifier | https://arxiv.org/abs/0801.1908 | |
| dc.identifier | http://arxiv.org/abs/0801.1908 | |
| dc.identifier | Eur.Phys.J.C54:73-87,2008 | |
| dc.identifier | doi:10.1140/epjc/s10052-007-0515-0 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191933 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Experimental disagreements with Extended Unitarity | |
| dc.type | text |