Jülich hyperon-nucleon model revisited

By J. Haidenbauer, U. Meissner. 2005

139 citations recorded by the source corpus.

A one-boson-exchange model for the hyperon-nucleon (\Lambda N, \Sigma N) interaction is presented. The model incorporates the standard one boson exchanges of the lowest pseudoscalar and vector meson multiplets with coupling constants fixed by SU(6) flavor symmetry relations. As the main new feature of the model, the contributions in the scalar--isoscalar (\sigma) and vector--isovector (\rho) exchange channels are now constrained by a microscopic model of correlated \pi\pi and K \bar K exchange. Additional short-ranged ingredients of the model in the scalar--isovector (a_0) and scalar--isospin-1/2 (\kappa) channels are likewise viewed as arising from meson-meson correlations but are treated phenomenologically. With this model a satisfactory reproduction of the available hyperon-nucleon data can be achieved.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/fead8cf511ba3a201130238e79cca14c5504ce56

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Citations in the corpus

• Strangeness in nuclei and neutron stars (2020, methodology): “nt to build up the YNand YY interactions, by imposing SU(3) avor symmetry. Presently, the most used models are those built by the Julic h and Nijmegen groups. The Julic h meson-exchange YNpotential [212, 213] is based on the NNBonn one. It is given in momentum space, containing full-energy dependenc”