Different effect of the hyperons $\Lambda$ and $\Xi$ on the nuclear core

Abstract

We demonstrate the different effect of strange impurities ($\Lambda$ and $\Xi$) on the static properties of nuclei within the framework of the relativistic mean-field model. Systematic calculations show that the gluelike role of $\Lambda$ hyperon is universal for all $\Lambda$-hypernuclei considered. However, ${\Xi }^{-}$ hyperon has the gluelike role only for the protons distribution in nuclei, and for the neutrons distribution ${\Xi }^{-}$ hyperon plays a repulsive role. On the other hand, ${\Xi }^0$ hyperon attracts surrounding neutrons and reveals a repulsive force to the protons. Possible explanations of the above observation are discussed.

8 pages, 3 figures

References in corpus (1)

• What Does Free Space Lambda-Lambda Interaction Predict for Lambda-Lambda Hypernuclei?

Cited by in corpus (2)

• Single-${\Xi }^{-}$ hypernuclei with quark mean field model
• Study of ${\Xi }^{-}$ hypernuclei in the Skyrme-Hartree-Fock approach