Hyperon single-particle potentials in nuclear matter based on baryon-baryon interactions derived within chiral effective field theory
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917247129223168 |
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| author | Jinno, Asanosuke Haidenbauer, Johann Meißner, Ulf-G. |
| author_facet | Jinno, Asanosuke Haidenbauer, Johann Meißner, Ulf-G. |
| contents | An analysis of the Lambda and Sigma single-particle potentials is presented, based on YN interactions derived within chiral effective field theory up to next-to-next-to-leading order (N$^2$LO). The self-consistent Brueckner-Hartree-Fock framework is employed within the continuous choice for the single-particle potential. The result for the Lambda single-particle potential is comparable to the ones obtained with previous chiral YN interactions up to next-to-leading order (NLO). The Sigma single-particle potential is found weakly attractive, in contrast to earlier weakly repulsive results, reflecting new constraints from the recent J-PARC E40 data on $Σ^+p$ scattering. An estimate of the theoretical uncertainty of the single-particle potentials is provided. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_04281 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hyperon single-particle potentials in nuclear matter based on baryon-baryon interactions derived within chiral effective field theory Jinno, Asanosuke Haidenbauer, Johann Meißner, Ulf-G. Nuclear Theory An analysis of the Lambda and Sigma single-particle potentials is presented, based on YN interactions derived within chiral effective field theory up to next-to-next-to-leading order (N$^2$LO). The self-consistent Brueckner-Hartree-Fock framework is employed within the continuous choice for the single-particle potential. The result for the Lambda single-particle potential is comparable to the ones obtained with previous chiral YN interactions up to next-to-leading order (NLO). The Sigma single-particle potential is found weakly attractive, in contrast to earlier weakly repulsive results, reflecting new constraints from the recent J-PARC E40 data on $Σ^+p$ scattering. An estimate of the theoretical uncertainty of the single-particle potentials is provided. |
| title | Hyperon single-particle potentials in nuclear matter based on baryon-baryon interactions derived within chiral effective field theory |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2602.04281 |