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arXiv · 2301.03923

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

Eliahu Friedman·Avraham Gal
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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'.

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Eliahu Friedman, Avraham Gal. 2023-01-10. $\Lambda NN$ content of $\Lambda$-nucleus potential. https://doi.org/10.1051/epjconf%2F202227106002

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