Antibaryon-nucleus bound states

0444746 - ÚJF 2016 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Óbertová, Jaroslava - Mareš, Jiří
Antibaryon-nucleus bound states.
Journal of Physics Conference Series. Vol. 599. Bristol: IOP, 2015, 012007. ISSN 1742-6588.
[3rd Workshop on FAIRNESS - FAIR Next Generation Scientists. Vierti sul Mare (IT), 22.09.2014-27.09.2014]
Grant CEP: GA ČR(CZ) GAP203/12/2126
Institucionální podpora: RVO:61389005
Klíčová slova: Sigma * potentials
Kód oboru RIV: BE - Teoretická fyzika

We calculated antibaryon ((B) over bar = (p) over bar, (Lambda) over bar, (Sigma) over bar, (Xi) over bar) bound states in selected nuclei within the relativistic mean-field (RMF) model. The G-parity motivated (B) over bar -meson coupling constants were scaled to yield corresponding potentials consistent with available experimental data. Large polarization of the nuclear core caused by (B) over bar was confirmed. The p annihilation in the nuclear medium was incorporated by including a phenomenological imaginary part of the optical potential. The calculations using a complex (p) over bar -nucleus potential were performed fully self-consistently. The (p) over bar- widths significantly decrease when the phase space reduction is considered for (p) over bar -annihilation products, but they still remain sizeable for potentials consistent with (p) over bar -atom data.
Trvalý link: http://hdl.handle.net/11104/0247247