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Письма в Журнал экспериментальной и теоретической физики, 2007, том 86, выпуск 3, страницы 190–192
(Mi jetpl813)
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ПОЛЯ, ЧАСТИЦЫ, ЯДРА
About the role of vector mesons on the $\eta\to\pi^0\gamma\gamma$ decay width in meson – baryon chiral model
È. A. Kuraev, V. N. Pervushin, M. K. Volkov Joint Institute for Nuclear Research, Bogoliubov Laboratory of Theoretical Physics
Аннотация:
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.
Поступила в редакцию: 13.06.2007
Образец цитирования:
È. A. Kuraev, V. N. Pervushin, M. K. Volkov, “About the role of vector mesons on the $\eta\to\pi^0\gamma\gamma$ decay width in meson – baryon chiral model”, Письма в ЖЭТФ, 86:3 (2007), 190–192; JETP Letters, 86:3 (2007), 164–166
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl813 https://www.mathnet.ru/rus/jetpl/v86/i3/p190
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Страница аннотации: | 196 | PDF полного текста: | 61 | Список литературы: | 41 |
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