Unitarized Chiral Perturbation Theory and the meson spectrum

Abstract

In this talk we briefly review how the unitarization of Chiral Perturbation Theory with dispersion relations can successfully describe the meson-meson scattering data and generate light resonances, whose mass, width and nature can be related to QCD parameters like quark masses and the number of colors.

Invited plenary talk to HADRON09, the XIII International Conference on Hadron Spectroscopy Nov.29-Dec.4, 2009, Florida State University

References in corpus (3)

• Model dependent analyses on the $N_c$ dependence of the $\sigma$ pole trajectory
• Comments on the large Nc behavior of light scalars
• f_0(600), kappa(800), rho(770) and K*(892), quark mass dependence from unitarized SU(3) Chiral Perturbation Theory

Cited by in corpus (6)

• From controversy to precision on the sigma meson: a review on the status of the non-ordinary $f_0(500)$ resonance
• 50 Years of Quantum Chromodynamics
• Chiral extrapolation of light resonances from one and two-loop unitarized Chiral Perturbation Theory versus lattice results
• Hadronic decays of mesons and baryons in the Dyson-Schwinger approach
• Bootstrapping gauge theories
• Precision dispersive approaches versus unitarized Chiral Perturbation Theory for the lightest scalar resonances $\sigma /f_0(500)$ and $\kappa /K_0^{\ast }(700)$