{"ID":6216440,"CreatedAt":"2026-07-09T14:13:38.98812259Z","UpdatedAt":"2026-07-09T14:13:38.98812259Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2602.04281","arxiv_id":"2602.04281","title":"Hyperon single-particle potentials in nuclear matter based on baryon-baryon interactions derived within chiral effective field theory","abstract":"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.","url_abs":"https://arxiv.org/abs/2602.04281v1","url_pdf":"https://arxiv.org/pdf/2602.04281v1","authors":"Asanosuke Jinno, Johann Haidenbauer, Ulf-G. Meißner","published":"2026-02-04T07:18:20Z","has_code":false}