| Issue |
EPJ Web of Conferences
Volume 73, 2014
MENU 2013 – 13th International Conference Meson-Nucleon Physics and the Structure of the Nucleon
|
|
|---|---|---|
| Article Number | 05012 | |
| Number of page(s) | 4 | |
| Section | Meson-Nucleon Systems | |
| DOI | https://doi.org/10.1051/epjconf/20147305012 | |
| Published online | 09 June 2014 | |
https://doi.org/10.1051/epjconf/20147305012
Chiral effective field theory description of the hyperon-nucleon interaction at next-to-leading order
Physik Department, Technische Universität München, 85747 Garching, Germany
a e-mail: stefan.petschauer@ph.tum.de
Published online: 9 June 2014
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.
© Owned by the authors, published by EDP Sciences, 2014
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