Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order
In this proceeding results for hyperon-nucleon interactions calculated at next-to-leading order (i.e. one-loop order) in SU(3) chiral effective field theory are presented. The potentials include contributions from one- and two-meson exchange, and four-baryon contact terms provided by the SU(3) chira...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2014-06-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20147305012 |
| _version_ | 1818789385223536640 |
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| author | Petschauer S. |
| author_facet | Petschauer S. |
| author_sort | Petschauer S. |
| collection | DOAJ |
| description | In this proceeding results for hyperon-nucleon interactions calculated at next-to-leading order (i.e. one-loop order) in SU(3) chiral effective field theory are presented. The potentials include contributions from one- and two-meson exchange, and four-baryon contact terms provided by the SU(3) chiral Lagrangian. SU(3) flavor symmetry is imposed for the low-energy constants, while explicit SU(3) symmetry breaking is included only through the physical pseudoscalar-meson and baryon masses. Calculations have been performed for hyperon-nucleon scattering cross sections using a regularized Lippmann-Schwinger equation. A good description of the available data is achieved, comparable to modern phenomenological hyperon-nucleon interaction models. These results provide a new basis for studies of hypernuclei or hyperons in nuclear matter. |
| first_indexed | 2024-12-18T14:38:43Z |
| format | Article |
| id | doaj.art-fcf445277ba64afa91582d78e235ca98 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T14:38:43Z |
| publishDate | 2014-06-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-fcf445277ba64afa91582d78e235ca982022-12-21T21:04:27ZengEDP SciencesEPJ Web of Conferences2100-014X2014-06-01730501210.1051/epjconf/20147305012epjconf_menu2013_05012Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading orderPetschauer S.In this proceeding results for hyperon-nucleon interactions calculated at next-to-leading order (i.e. one-loop order) in SU(3) chiral effective field theory are presented. The potentials include contributions from one- and two-meson exchange, and four-baryon contact terms provided by the SU(3) chiral Lagrangian. SU(3) flavor symmetry is imposed for the low-energy constants, while explicit SU(3) symmetry breaking is included only through the physical pseudoscalar-meson and baryon masses. Calculations have been performed for hyperon-nucleon scattering cross sections using a regularized Lippmann-Schwinger equation. A good description of the available data is achieved, comparable to modern phenomenological hyperon-nucleon interaction models. These results provide a new basis for studies of hypernuclei or hyperons in nuclear matter.http://dx.doi.org/10.1051/epjconf/20147305012 |
| spellingShingle | Petschauer S. Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order EPJ Web of Conferences |
| title | Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order |
| title_full | Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order |
| title_fullStr | Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order |
| title_full_unstemmed | Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order |
| title_short | Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order |
| title_sort | chiral effective field theory description of the hyperon nucleon interaction at next to leading order |
| url | http://dx.doi.org/10.1051/epjconf/20147305012 |
| work_keys_str_mv | AT petschauers chiraleffectivefieldtheorydescriptionofthehyperonnucleoninteractionatnexttoleadingorder |