$\Lambda NN$ content of $\Lambda$-nucleus potential

Abstract

A minimally constructed $\Lambda$-nucleus density-dependent optical potential is used to calculate binding energies of observed $1s_{\Lambda }$, $1p_{\Lambda }$ states across the periodic table, leading to a repulsive $\Lambda NN$ contribution $D_{\Lambda }^{(3)}\approx 14$ MeV to the phenomenological $\Lambda$-nucleus potential depth $D_{\Lambda }\approx -30$ MeV. This value is significant in connection with the so-called 'hyperon puzzle'.

Comments: Invited talk at HYP2022, Prague, June-July 2022, reporting on a recent Phys. Lett. B published work [arXiv:2204.02264]. arXiv admin note: substantial text overlap with arXiv:2204.02264