Strangeness −2 two-baryon systems

2010/09/01 by A. Valcarce, H. Garcilazo, T. F. Caramés +1
Physics and Astronomy · #Baryon #High-Energy Particle Collisions Research #Hyperon #Isospin #Lambda #Lambda baryon #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark model #Scalar (mathematics) #Strangeness #Strangeness production #hep-ph

paper · pdf · doi:10.1016/j.physletb.2010.08.066

published as Phys.Lett.B693:305-309,2010 · 12 pages, 4 figures. Accepted for publication in Phys. Lett. B

openalex publication_date 2010/09/01 · arxiv created 2010/09/09 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We derive strangeness -2 baryon-baryon interactions from a chiral constituent quark model including the full set of scalar mesons. The model has been tuned in the strangeness 0 and -1 two-baryon systems, providing parameter free predictions for the strangeness -2 case. We calculate elastic and inelastic NΞ and ΛΛ cross sections which are consistent with the existing experimental data. We also calculate the two-body scattering lengths for the different spin-isospin channels.

Citations

• ΛNNandΣNNsystems at threshold
• Extended-soft-core baryon-baryon model. II. Hyperon-nucleon interaction
• Quark-model study of few-baryon systems
• Constituent quark model study of the meson spectra
• Strangeness S=−2 baryon–baryon interactions using chiral effective field theory
• Baryon–baryon interactions in the SU6 quark model and their applications to light nuclear systems