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VOLUME 86 | ISSUE 3 | PAGE 190 About the role of vector mesons on the η → π0 γ γ decay width in meson - baryon chiral model E. A. Kuraev, V. N. Pervushin1), M. K. Volkov1) Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia PACS: 11.30.Rd, 13.20.-v, 13.25.-k Abstract It is shown in the work of one of the authors in 1979 (MKV) that the contribution to the amplitude of this decay from diagrams with one baryon loop is equal to zero and contributions from diagrams with meson loops appear very small. However, pole diagrams with intermediate vector mesons were not considered there. Here it is shown that contributions of these pole diagrams dominate. The meson-baryon chiral model used here is compared with known quark chiral models. The obtained results are in satisfactory agreement with recent experimental data. Download PS file (GZipped, 61.3K)  |  Download PDF file (144.2K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.