Long-range chiral dynamics of $Λ$-hyperon in nuclear media
| dc.creator | Cámalich, J. Martín | |
| dc.date | 2006-12-01 | |
| dc.date.accessioned | 2026-07-07T07:34:55Z | |
| dc.date.available | 2026-07-07T07:34:55Z | |
| dc.description | We extend a chiral effective field theory approach to the $Λ$-nuclei interaction with the inclusion of the decuplet baryons. More precisely, we study the contributions due to the long-range two-pion exchange, with $Σ$ and $Σ^*$ baryons in the internal baryonic lines considering Nh and $Δ$h excitations. In particular, central and spin-orbit potentials are studied. For the former, regularization is needed and physical values of the cut-off give a large attraction, becoming necessary to include the repulsion of other terms not considered here. For the latter, in a model-independent framework, the inclusion of the decuplet supports the natural explanation of the smallness of the $Λ$-nuclear spin-orbit term and shows the importance of the $Σ^*$ and $Δ$ degrees of freedom for the hyperon-nucleus interactions. | |
| dc.description | Talk given at HYP 2006 (Mainz, Germany), 10-14 October 2006; 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0612001 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0612001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/119934 | |
| dc.subject | Nuclear Theory | |
| dc.title | Long-range chiral dynamics of $Λ$-hyperon in nuclear media | |
| dc.type | text |