Strangeness S=−2 baryon–baryon interactions using chiral effective field theory

2007/05/25 by H. Polinder, J. Haidenbauer, Ulf-G. Meißner +1 · 1 citation
Physics and Astronomy · #Baryon #High-Energy Particle Collisions Research #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Strangeness #nucl-th

paper · pdf · doi:10.1016/j.physletb.2007.07.045

published as Phys.Lett.B653:29-37,2007 · 10 pages, 2 PostScript figures

arxiv created 2007/05/25 · openalex publication_date 2007/08/01 · arxiv updated 2016/03/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We derive the leading order strangeness S=-2 baryon-baryon interactions in chiral effective field theory. The potential consists of contact terms without derivatives and of one-pseudoscalar-meson exchanges. The contact terms and the couplings of the pseudoscalar mesons to the baryons are related via SU(3) flavor symmetry to the S=-1 hyperon-nucleon channels. We show that the chiral effective field theory predictions with natural values for the low-energy constants agree with the experimental information in the S=-2 sector.

Citations

• ScalarΛNandΛΛinteraction in a chiral unitary approach
• Extended-soft-core baryon-baryon model III. S=-2 hyperon-hyperon/nucleon interaction
• Nuclear forces from chiral Lagrangians using the method of unitary transformation (I): Formalism
• Few-Nucleon Forces and Systems in Chiral Effective Field Theory
• The Octet Model and its Clebsch-Gordan Coefficients
• Improving the convergence of the chiral expansion for nuclear forces - II: Low phases and the deuteron
• Hyperon–nucleon interactions—a chiral effective field theory approach
• Extended-soft-core baryon-baryon model. II. Hyperon-nucleon interaction
• Baryon–baryon interactions in the SU6 quark model and their applications to light nuclear systems

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