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Hypernuclei and supernuclei

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5544352
On the assumption of approximate equality of ..lambda../sup +//sub c/ N, ..lambda../sub b/N, and ..lambda..N forces we have calculated the energies of the ground and excited states of the b and c quarks of supernuclei. The lightest (2--4 particle) supernuclei are calculated by direct solution of the Schroedinger equation with use of a variational procedure, and the heavier supernuclei are calculated in accordance with the model of a ..lambda../sup +//sub c/ or ..lambda../sub b/ particle plus a nucleon core. The energies of ..lambda../sup +//sub c/-particle (or ..lambda../sub b/-particle) excitations of all supernuclei are estimated, and also the energies of multiparticle levels of ..lambda../sup +//sub c/ nuclei of the 1p shell (in accordance with the multiparticle shell model). The effect of variation of the magnitude of ..lambda../sup +//sub c/ N forces on the binding energy of supernuclei is investigated. It is shown that as a result of the Coulomb interaction in ..lambda../sup +//sub c/ nuclei, in contrast to hypernuclei: a) the binding energy of the ..lambda../sup +//sub c/ particle does not approach saturation, but reaches a maximum at Aroughly-equal40 and then drops; b) the number of excited levels is substantially smaller than in hypernuclei; c) the isotopic effect is considerably more weakly expressed.
Research Organization:
Moscow State University
OSTI ID:
5544352
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 34:4; ISSN SJNCA
Country of Publication:
United States
Language:
English