HAL : in2p3-00195712, version 1
 arXiv : hep-ph/9906372
 International workshop on e+e- collisions from Phi to J/psi, Novosibirsk : Russian Federation (1999)
 A VMD Based, Nonet and SU(3) Symmetry Broken Model For Radiative Decays of Light Mesons
 (1999)
 We present a VMD based model aiming to describe all radiative decays of light mesons. We show that the SU(3) breaking mechanism proposed by Bando, Kugo and Yamawaki (BKY), supplemented by nonet symmetry breaking in the pseudoscalar sector are sufficient to provide a nice description of all data, except the charged K* radiative width. It is also shown that nonet symmetry breaking has effects which cannot be disantangled from those produced by coupling of glue to the eta' meson. Coupling of glue to $\eta$ is not found to be required by the data. Asssuming the charged K* radiative width is indeed at its presently accepted value necessitates to supplement the BKY breaking in a way which finally preserves an equivalence statement between the VMD approach to radiative decays and the Wess-Zumino-Witten Lagrangian.
 Thème(s) : Physique/Physique des Hautes Energies - Phénoménologie
 Lien vers le texte intégral : http://fr.arXiv.org/abs/hep-ph/9906372
 in2p3-00195712, version 1 http://hal.in2p3.fr/in2p3-00195712 oai:hal.in2p3.fr:in2p3-00195712 Contributeur : Dominique Girod <> Soumis le : Mardi 11 Décembre 2007, 13:38:06 Dernière modification le : Mardi 11 Décembre 2007, 14:14:44