SU(3) chiral dynamics and baryon–baryon interactions

We calculate hyperon–nucleon and hyperon–hyperon interactions at next-to-leading order in SU(3) baryon chiral perturbation theory extending earlier work by the Bonn–Juelich group. The constructed potentials in momentum space include all one- and two-meson exchange terms generated by the SU(3) chiral Lagrangian. Effects from intermediate decuplet baryons are considered as well. These chiral baryon–baryon potentials, together with appropriate contact terms, provide a new basis for systematic studies of hyperon–nucleon scattering and light hypernuclei.