S-wave γγ\to ππand f_0(980)\to ππ
| dc.creator | Oller, J. A. | |
| dc.creator | Roca, L. | |
| dc.creator | Schat, C. | |
| dc.date | 2008-04-16 | |
| dc.date.accessioned | 2026-07-07T11:49:53Z | |
| dc.date.available | 2026-07-07T11:49:53Z | |
| dc.description | We report on a dispersion relation for the γγ\to (ππ)_I S-wave in isospin I emphasizing the low energy region. The f_0(980) signal that emerges in γγ\to ππis also discussed. Our results could be used to distinguish between different ππisoscalar S-wave parameterizations. We also calculate the width of the σresonance to γγand obtain the value Γ(σ\toγγ)=(1.68\pm 0.15) KeV. Finally, we elaborate on the size of the f_0(980) coupling to ππand show that its smallness compared to the K\bar{K} one is not related to the OZI rule. | |
| dc.description | 6 pages, 1 figure. Prepared for the Workshop on Scalar Mesons and Related Topics, Lisbon, 11-16 Feburary 2008 | |
| dc.identifier | https://arxiv.org/abs/0804.2530 | |
| dc.identifier | http://arxiv.org/abs/0804.2530 | |
| dc.identifier | AIPConf.Proc.1030:147-152,2008 | |
| dc.identifier | doi:10.1063/1.2973490 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203394 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | S-wave γγ\to ππand f_0(980)\to ππ | |
| dc.type | text |