The Hyperon-Nucleon Interaction: Conventional Versus Effective Field Theory Approach
| Autor: | Ulf-G. Meißner, H. Polinder, Andreas Nogga, Johann Haidenbauer |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Particle physics
Nuclear Theory High Energy Physics::Lattice FOS: Physical sciences momentum dependence [channel cross section] Nuclear Theory (nucl-th) exchange [meson] elastic scattering [nucleon hyperon] Effective field theory energy levels numerical calculations Nuclear Experiment scattering amplitude [nucleon hyperon] (2pseudoscalar meson) [exchange] Physics momentum dependence [angular distribution] hypernucleus [hydrogen] Group (mathematics) effective potential interaction [nucleon Lambda] Lippmann-Schwinger equation four-fermion interaction [baryon] High Energy Physics::Phenomenology Hyperon Sigma Order (ring theory) interaction [nucleon Sigma] scalar meson partial wave analysis vector meson coupled channel scattering length High Energy Physics::Experiment chiral [effective Lagrangian] pseudoscalar meson Nucleon hypernucleus [helium] |
| Zdroj: | Lecture Notes in Physics ISBN: 9783540720386 Lecture Notes in Physics.-724 (2007).-Berlin, Springer.-978-3-540-72038-6.-S. 113-140 |
| DOI: | 10.1007/978-3-540-72039-3_4 |
| Popis: | 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. Comment: 28 pages, 8 figures, submitted to Lecture Notes in Physics |
| Databáze: | OpenAIRE |
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