Počet záznamů: 1  

Calculations of K- nuclear quasi-bound states based on chiral meson-baryon amplitudes

  1. 1.
    0384764 - ÚJF 2013 RIV NL eng J - Článek v odborném periodiku
    Gazda, Daniel - Mareš, Jiří
    Calculations of K- nuclear quasi-bound states based on chiral meson-baryon amplitudes.
    Nuclear Physics. A. Roč. 881, 5/6 (2012), s. 159-168. ISSN 0375-9474. E-ISSN 1873-1554
    Grant CEP: GA MŠMT(CZ) LG11005
    Institucionální podpora: RVO:61389005
    Klíčová slova: K- nuclear states * mesic nuclei * antikaon-nucleus interaction
    Kód oboru RIV: BE - Teoretická fyzika
    Impakt faktor: 1.525, rok: 2012

    In-medium (K) over bar N scattering amplitudes developed within a new chirally motivated coupled-channel model due to Cieply and Smejkal that fits the recent SIDDHARTA kaonic hydrogen Is level shift and width are used to construct K- nuclear potentials for calculations of K- nuclear quasi-bound states. The strong energy and density dependence of scattering amplitudes at and near threshold leads to K- potential depths -Re V-K approximate to 80-120 MeV. Self-consistent calculations of all K- nuclear quasi-bound states, including excited states, are reported. Model dependence, polarization effects, the role of p-wave interactions, and two-nucleon K- NN -> YN absorption modes are discussed. The K- absorption widths Gamma(K) are comparable or even larger than the corresponding binding energies B-K for all K- nuclear quasi-bound states. exceeding considerably the level spacing. This discourages search for K- nuclear quasi-bound states in any but the lightest nuclear systems.
    Trvalý link: http://hdl.handle.net/11104/0216142

     
     
Počet záznamů: 1  

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