Radiative decay of rho^0 and phi mesons in a chiral unitary approach
| dc.creator | Marco, E. | |
| dc.creator | Hirenzaki, S. | |
| dc.creator | Oset, E. | |
| dc.creator | Toki, H. | |
| dc.date | 1999-03-01 | |
| dc.date | 1999-10-15 | |
| dc.date.accessioned | 2026-07-07T10:33:49Z | |
| dc.date.available | 2026-07-07T10:33:49Z | |
| dc.description | We study the rho^0 and phi decays into pi^+ pi^- gamma, pi^0 pi^0 gamma and phi into pi^0 eta gamma using a chiral unitary approach to deal with the final state interaction of the M M system. The final state interaction modifies only moderately the large momenta tail of the photon spectrum of the rho^0 --> pi^+ pi^- gamma decay. In the case of phi decay the contribution to pi^+ pi^- gamma and pi^0 pi^0 gamma decay proceeds via kaonic loops and gives a distribution of pi pi invariant masses in which the f_0(980) resonance shows up with a very distinct peak. The spectrum found for phi --> pi^0 pi^0 gamma decay agrees with the recent experimental results obtained at Novosibirsk. The branching ratio for phi --> pi^0 eta gamma, dominated by the a_0(980), is also in agreement with recent Novosibirsk results. | |
| dc.description | 14 pages, 3 figures. Revised version using an antisymmetric tensor notation for the vector mesons. To appear in Physics Letters B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9903217 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9903217 | |
| dc.identifier | Phys.Lett.B470:20-26,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)01205-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179257 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | Radiative decay of rho^0 and phi mesons in a chiral unitary approach | |
| dc.type | text |