Abstract:
The binding energies of neutron rich strangeness $S=-1$
hypernuclei are estimated in the chiral soliton approach using
the bound state rigid oscillator version of the $SU(3)$ quantization model.
Additional binding of strange hypernuclei in comparison with nonstrange
neutron rich nuclei takes place at not large values of atomic (baryon) numbers,
$A=B\leq\sim 10$. This effect becomes stronger with increasing isospin of nuclides,
and for the "nuclear variant" of the model with rescaled Skyrme constant $e$.
Binding energies of $^8_\Lambda He$ and recently discovered
$^6_\Lambda H$ satisfactorily agree with data.
Hypernuclei $^7_\Lambda$H, $^9_\Lambda$He
are predicted to be bound stronger in comparison with their nonstrange analogues
$^7$H, $^9$He; hypernuclei $^{10}_\Lambda $Li, $^{11}_\Lambda $Li,
$^{12}_\Lambda $Be, $^{13}_\Lambda $Be etc.
are bound stronger in the nuclear variant of the model.
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