Hyperon-nucleon interaction at next-to-leading order in chiral effective field theory
Abstract
Results for the Lambda N and Sigma N interactions obtained at next-to-leading order in chiral effective field theory are reported. At the order considered there are contributions from one- and two-pseudoscalar-meson exchange diagrams and from four-baryon contact terms without and with two derivatives. SU(3) flavor symmetry is imposed for constructing the hyperon-nucleon interaction while the explicit SU(3) symmetry breaking by the physical masses of the pseudoscalar mesons (pi, K, eta) is taken into account. An excellent description of the hyperon-nucleon system can be achieved at next-to-leading order. It is on the same level of quality as the one obtained by the most advanced phenomenological hyperon-nucleon interaction models.
Keywords
Cite
@article{arxiv.1304.5339,
title = {Hyperon-nucleon interaction at next-to-leading order in chiral effective field theory},
author = {J. Haidenbauer and S. Petschauer and N. Kaiser and U. -G. Meißner and A. Nogga and W. Weise},
journal= {arXiv preprint arXiv:1304.5339},
year = {2013}
}
Comments
29 pages, 14 figures, uses elsarticle.cls and elsart3p.cls