Chiral SU(3) theory of antikaon-nucleon interactions with improved threshold constraints

By Y. Ikeda, T. Hyodo, W. Weise. 2012

252 citations recorded by the source corpus.

K-nucleon interactions are investigated in the framework of coupled-channels dynamics based on the next-to-leading order chiral SU(3) meson-baryon effective Lagrangian. A recent determination of the 1s shift and width of kaonic hydrogen enables us to set accurate constraints on the coupled-channels meson-baryon amplitudes in the strangeness S = 1 sector. Theoretical uncertainties in the subthreshold extrapolation of the coupled-channels amplitudes are discussed. Using this framework, we give predictions for K neutron interactions and for the spectrum of the (1405) resonance. A simplied, eective three-channel model using leading order chiral SU(3) meson-baryon interactions is also constructed for convenient application in K-nuclear few-body calculations.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bc13111ed39839d41ddd2789d01afb165f30f391

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In Nuclear and High Energy Physics

1. D. Jido
2. M. Nielsen
3. S. H. Lee
4. T. Hyodo
5. A. Ohnishi

Citations in the corpus

• Exotic Hadrons from Heavy Ion Collisions (2017, background): “While the recent kaonic hydrogen measurement [63, 64] reduces the uncertainty of the subthreshold extrapolation of the K̄N(I = 0) amplitude [65, 66], the accuracy in the I = 1 component is still to be improved.”