Hypernuclear constraints on $ΛN$ and $ΛNN$ interactions
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866910017831043072 |
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| author | Friedman, Eliahu Gal, Avraham |
| author_facet | Friedman, Eliahu Gal, Avraham |
| contents | Recent work on using density dependent $Λ$-nuclear optical potentials in calculations of $Λ$-hypernuclear binding energies is reviewed. It is found that all known $Λ$ binding energies in the mass range $16 \leq A \leq 208$ are well fitted in terms of two interaction parameters: one, attractive, for the spin-averaged $ΛN$ interaction and another one, repulsive, for the $ΛNN$ interaction. The $ΛN$ interaction term by itself overbinds $Λ$ hypernuclei, in quantitative agreement with recent findings obtained in EFT and Femtoscopy studies. The strength of the $ΛNN$ interaction term is compatible with values required to resolve the hyperon puzzle. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09812 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hypernuclear constraints on $ΛN$ and $ΛNN$ interactions Friedman, Eliahu Gal, Avraham Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment Recent work on using density dependent $Λ$-nuclear optical potentials in calculations of $Λ$-hypernuclear binding energies is reviewed. It is found that all known $Λ$ binding energies in the mass range $16 \leq A \leq 208$ are well fitted in terms of two interaction parameters: one, attractive, for the spin-averaged $ΛN$ interaction and another one, repulsive, for the $ΛNN$ interaction. The $ΛN$ interaction term by itself overbinds $Λ$ hypernuclei, in quantitative agreement with recent findings obtained in EFT and Femtoscopy studies. The strength of the $ΛNN$ interaction term is compatible with values required to resolve the hyperon puzzle. |
| title | Hypernuclear constraints on $ΛN$ and $ΛNN$ interactions |
| topic | Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2602.09812 |