Comments on the Mass Formula for Meson-Baryon System

Gell-Mann–Okubo Mass Formula for SU (4) Meson Hexadecuplet

Using a linear mass spectrum of an SU(4) meson hexadecuplet, we derive the Gell-Mann–Okubo mass formula for the charmed mesons, in good agreement with experiment. Possible generalization of this method to a higher symmetry group is briefly discussed. Bitnet: [email protected] Bitnet: [email protected]. On sabbatical leave from School of Physics and Astronomy, Tel Aviv University, Ramat Avi...

Meson Mass at Large Baryon Chemical Potential in Dense QCD

We reexamine the quark mass induced term in chiral Lagrangian in color-flavor locking phase in dense QCD, and show that the meson mass term is determined by three independent invariants under chiral-axial symmetry, and is given in terms of the quark mass, gap, and the chemical potential by mπ ∼ mq∆/μ ln(μ2/∆2). Thus mesons become massless as μ → ∞. Cold, dense quark system with three massless q...

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...

Meson and Baryon resonances

In this talk I review recent advances on the structure of the meson and baryon resonances which can be dynamically generated from the interaction of mesons or mesons and baryons. Particular emphasis is put on results involving vector mesons, which bring new light into the nature of some of the observed higher mass mesons and baryons and make predictions for new states.