Structure of Meson-Baryon Interaction Vertices

Interaction studies of a heavy - light meson - baryon system

We study time correlation functions of operators representing heavy-light K–Λ like systems at various relative distances r. The heavy quarks, one in each hadron, are treated as static. An anisotropic and asymmetric lattice is used with Wilson fermions. Our goal is to extract an adia-batic potential and thus learn about the physics of the five-quark system viewed as an hadronic molecule.

Analysis of heavy spin-3=2 baryon-heavy spin-1=2 baryon-light vector meson vertices in QCD

The heavy spin-3=2 baryon-heavy spin-1=2 baryon vertices with light vector mesons are studied within the light cone QCD sum rules method. These vertices are parametrized in terms of three coupling constants. These couplings are calculated for all possible transitions. It is shown that correlation functions for these transitions are described by only one invariant function for every Lorenz struc...

Resonances and the Weinberg – Tomozawa 56 - baryon – 35 - meson interaction

Resonances and the Weinberg–Tomozawa 56-baryon –35-meson interaction. Abstract. Vector meson degrees of freedom are incorporated into the Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian by using a scheme which relies on spin–flavor SU(6) symmetry. The corresponding Bethe-Salpeter approximation successfully reproduces previous SU(3)–flavor WT results for the lowest-lying s–wave negative pa...

Unified meson-baryon potential

Meson-baryon interactions and baryon resonances

Meson-baryon interactions are the fundamental building blocks to study the structures of baryon resonances and meson properties in few-body nuclear systems. We review the recent progress in the investigation of the meson-baryon interaction in the strangeness S “ ́1 sector and the structure of the Λp1405q resonance. In particular, we present an attempt to construct a realistic KN-πΣ interaction i...