The hyperon-nucleon interaction: conventional versus effective field theory approach

Details The hyperon-nucleon interaction: conventional versus effective field theory approach The hyperon-nucleon interaction: conventional versus effective field theory approach

2007-02-05

arxiv.org/abs/nucl-th/0702015v1

Lect.NotesPhys.724:113-140,2007

Physics

Nuclear Physics

Nuclear Theory

28 pages, 8 figures, submitted to Lecture Notes in Physics

Scientific paper

10.1007/978-3-540-72039-3_4

Hyperon-nucleon interactions are presented that are derived either in the conventional meson-exchange picture or within leading order chiral effective field theory. The chiral potential consists of one-pseudoscalar-meson exchanges and non-derivative four-baryon contact terms. With regard to meson-exchange hyperon-nucleon models we focus on the new potential of the Juelich group, whose most salient feature is that the contributions in the scalar--isoscalar (\sigma) and vector--isovector (\rho) exchange channels are constrained by a microscopic model of correlated \pi\pi and KKbar exchange.

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