F₀(980)-meson as a KK molecule in a phenomenological Lagrangian approach / T. Branz, T. Gutsche, V. E. Lyubovitskiy (Lyubovitskij)

Уровень набора: The European Physical Journal A, Scientific Journal = 1998-Основной Автор-лицо: Branz, T.Альтернативный автор-лицо: Gutsche, T.;Lyubovitskiy (Lyubovitskij), V. E., physicist, Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany), 1963-, Valery EfimovichЯзык: английский ; резюме, eng.Резюме или реферат: We discuss a possible interpretation of the f ₀(980)-meson as a hadronic molecule —a bound state of K and KK mesons. Using a phenomenological Lagrangian approach we calculate the strong f 0(980) -ππ and electromagnetic f₀(980) - үү decays. The compositeness condition provides a self-consistent method to determine the coupling constant between f₀ and its constituents, K and KK. Form factors governing the decays of the f 0(980) are calculated by evaluating the kaon loop integrals. The predicted f₀(980) - ππ and f₀(980) - γγ decay widths are in good agreement with available data and results of other theoretical approaches..Примечания о наличии в документе библиографии/указателя: [References: p. 316-317].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References: p. 316-317]

We discuss a possible interpretation of the f ₀(980)-meson as a hadronic molecule —a bound state of K and KK mesons. Using a phenomenological Lagrangian approach we calculate the strong f 0(980) -ππ and electromagnetic f₀(980) - үү decays. The compositeness condition provides a self-consistent method to determine the coupling constant between f₀ and its constituents, K and KK. Form factors governing the decays of the f 0(980) are calculated by evaluating the kaon loop integrals. The predicted f₀(980) - ππ and f₀(980) - γγ decay widths are in good agreement with available data and results of other theoretical approaches.

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