Speaker
Description
In strangeness nuclear physics, exotic hypernuclei with a proton or neutron excess are of particular interest now [1]. Such systems loosely studied experimentally so far can be produced in heavy ion collisions [2] at NICA complex developed at JINR. Properties of exotic hypernuclei can bring new knowledge on subtle features of the hyperon-nucleon and hyperon-nucleus interactions. Specifically, density dependence of the ΛN interaction, ability of the hyperon to distort the nuclear core, charge symmetry breaking ΛN interaction can be investigated [3].
Due to the glue-like role of the Λ hyperon, there is a chance to stabilize systems with unstable nuclear cores. Particularly, we test the possibility of the 9ΛC hypernucleus to be bound. We use the Skyrme-Hartree-Fock approach, which has been widely and successfully applied to Λ hypernuclei including the light ones (e.g., [4,5]) and carefully examine various Skyrme potentials known from the literature. We predict that $^9_Λ\!$C with extreme Z/N=3 (impossible in nonstrange nuclei) is bound. We study also the stability of exotic boron, nitrogen and oxygen hyperisotopes.
References:
1. A. Gal, D.J. Millener, Phys. Lett. B 725, 445-450 (2013).
2. C. Rappold, J. Lopez-Fidalgo, Phys. Rev. C 94, 044616 (2016).
3. T.Yu. Tretyakova, D.E. Lanksoy, Eur. Phys. J. A 5, 391-398 (1999).
4. D.E. Lanskoy, Y. Yamamoto, Phys. Rev. C 55, 5, 2330-2339 (1997).
5. H.-J. Schulze, E. Hiyama, Phys. Rev. C 90, 047301 (2014).
