Low Lying Scalar Resonances and Chiral Symmetry

Abstract

Current theoretical studies on the $\sigma$ and $\kappa$ resonances are reviewed. It is emphasized that all evidences accumulated so far are consistent with the picture that the $\sigma$ meson is the chiral partner of the Nambu--Goldstone bosons in a linear realization of chiral symmetry.

Invited plenary talk given at CHIRAL 2007, Nov. 13-16, 2007, RCNP, Osaka, Japan

References in corpus (11)

• Mass and width of the lowest resonance in QCD
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• Scalar Glueball, Scalar Quarkonia, and their Mixing
• Scalar Particles in Lattice QCD
• The $\kappa$ resonance in s wave $\pi K$ scatterings
• Light Scalar Tetraquark Mesons in the QCD Sum Rule
• Mixings of 4-quark components in light non-singlet scalar mesons in QCD sum rules
• The Constraints of Unitary on $\pi \pi$ Scattering Dispersion Relations
• On the scalar nonet in the extended Nambu Jona-Lasinio model
• Meson Form Factors and the Quark-Level Linear Sigma Model
• Lightest scalars as chiral partners of the Nambu--Goldstone bosons

Cited by in corpus (2)

• A Dispersive Analysis on the $f_0(600)$ and $f_0(980)$ Resonances in $\gamma \gamma \to {\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0$ Processes
• Probing the substructure of $f_0(1370)$