Finite width effects in ϕradiative decays
| dc.creator | Oller, Jose A. | |
| dc.date | 2002-05-13 | |
| dc.date | 2002-11-11 | |
| dc.date.accessioned | 2026-07-07T10:33:04Z | |
| dc.date.available | 2026-07-07T10:33:04Z | |
| dc.description | The decay widths ϕ\to γf_0(980) and ϕ\to γa_0(980) are calculated taking into account the finite widths of the scalar resonances f_0(980) and a_0(980). The latter are shown to be essential in order to obtain meaningful results. Simultaneously we also study the decays ϕ\to γπ^0π^0 and γπ^0ηwhere a good reproduction of the recent experimental data is obtained, pointing out the necessity of a ϕγK^0\bar{K}^0 contact vertex. The calculated decay rates to γf_0(980) and γa_0(980) are in good agreement with the experimental ones without invoking isospin breaking in the couplings of the f_0(980) and a_0(980) resonances to the K^+ K^- and K^0 \bar{K}^0 channels, at odds with recent proposals. The derived formula for calculating these ϕradiative decay widths can be also applied in their own experimental analyses in order to obtain more precise results. | |
| dc.description | 20 pages, 6 figures. One reference is corrected. Version to be published in Nuclear Physics A | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0205121 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0205121 | |
| dc.identifier | Nucl.Phys.A714:161-182,2003 | |
| dc.identifier | doi:10.1016/S0375-9474(02)01360-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178977 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Finite width effects in ϕradiative decays | |
| dc.type | text |