0433912 - ÚJF 2015 RIV US eng J - Článek v odborném periodiku
Shevchenko, Nina V. - Revai, J.
Faddeev calculations of the (K)over-bar N N system with a chirally motivated (K)over-bar N interaction. I. Low-energy K (-) d scattering and antikaonic deuterium.
Physical Review. C. Roč. 90, č. 3 (2014), 034003. ISSN 0556-2813. E-ISSN 2469-9993
Grant CEP: GA ČR(CZ) GAP203/12/2126; GA MŠMT LG14038
Institucionální podpora: RVO:61389005
Klíčová slova: Faddeev calculations * kaonic hydrogen * X-rays
Kód oboru RIV: BE - Teoretická fyzika
Impakt faktor: 3.733, rok: 2014 ; AIS: 0.843, rok: 2014
DOI: https://doi.org/10.1103/PhysRevC.90.034003

A chirally-motivated coupled-channel (K) over bar N potential, reproducing all low-energy experimental data on K-p scattering and kaonic hydrogen and suitable for using in accurate few-body calculations, was constructed. The potential was used for calculations of low-energy amplitudes of elastic K- d scattering using Faddeev-type Alt-Grassberger-Sandhas (AGS) equations with coupled (K) over bar N N and pi Sigma N channels. A complex K- - d potential reproducing the three-body K- d amplitudes was constructed and used for calculation of the 1s level shift and the width of kaonic deuterium. The predicted shift Delta E-1s(K- d) similar to -830 eV and width Gamma(K- d)(1s) approximate to 1055 eV are close to our previous results obtained with phenomenological (K) over bar N potentials. No quasi-bound states in the K- d system were found.
Trvalý link: http://hdl.handle.net/11104/0238128