Hypernuclear constraints on $\hat{I}›N$ and $\hat{I}›NN$ interactions

Abstract

Recent work on using density dependent $\hat{I}›$-nuclear optical potentials in calculations of $\hat{I}›$-hypernuclear binding energies is reviewed. It is found that all known $\hat{I}›$ binding energies in the mass range $16\le A\le 208$ are well fitted in terms of two interaction parameters: one, attractive, for the spin-averaged $\hat{I}›N$ interaction and another one, repulsive, for the $\hat{I}›NN$ interaction. The $\hat{I}›N$ interaction term by itself overbinds $\hat{I}›$ hypernuclei, in quantitative agreement with recent findings obtained in EFT and Femtoscopy studies. The strength of the $\hat{I}›NN$ interaction term is compatible with values required to resolve the hyperon puzzle.

Contribution to the Acta Physica Polonica B special issue marking Dave Roper's 90th birthday