Effective Chiral Theory for Radiative Decays of Mesons
| dc.creator | Gedalin, E. | |
| dc.creator | Moalem, A. | |
| dc.creator | Razdolskaya, L. | |
| dc.date | 2000-06-29 | |
| dc.date | 2000-07-02 | |
| dc.date.accessioned | 2026-07-07T05:38:07Z | |
| dc.date.available | 2026-07-07T05:38:07Z | |
| dc.description | An extended $U(3)_L\bigotimes U(3)_R$ chiral theory which includes pseudoscalar and vector meson nonets as dynamic degrees of freedom is presented. We combine a hidden symmetry approach with a general procedure of including the $η'$ meson into chiral theory. The $U(3)_L\bigotimes U(3)_R$ and the SU(3) symmetries are broken by the mechanism based on quark mass matrix. Meson radiative decay widths are parameterized in terms of a single and real $η-η'$ mixing angle $θ_P$, a U(3)_V symmetry breaking scale parameter c_W, and the radiative decay constants $F_π, F_K, F_η, F_{η'}$, for the $π, η$, K, $η'$ mesons, respectively. Taking $F_π= 93 MeV$, a global fit to decay width data yields F_K/F_π= 1.16 \pm 0.11, F_η/F_π= 1.14\pm 0.04, F_{η'}/F_π= 1.09 \pm 0.04, c_W = -0.19 \pm0.03, θ_P =-(15.4 \pm 1.8)^o. | |
| dc.description | 12 pages, revtex | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0006073 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0006073 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/81510 | |
| dc.subject | Nuclear Theory | |
| dc.title | Effective Chiral Theory for Radiative Decays of Mesons | |
| dc.type | text |