Resonances, Chiral Symmetry, Coupled Channel Unitarity and Effective Lagrangians

Abstract

By means of a coupled channel non-perturbative unitary approach, it is possible to extend the strong constrains of Chiral Perturbation Theory to higher energies. In particular, it is possible to reproduce the lowest lying resonances in meson-meson scattering up to 1.2 GeV using the parameters of the O(p^2) and O(p^4) Chiral Lagrangian. We report on an update of these results examining their possible relevance for meson spectroscopy.

To appear in the proceedings of the 8th International Conference on Hadron Spectroscopy, HADROn 99, August 24-28, 1999, Beijing, China. Four pages, uses espcrc1.sty (included)

References in corpus (2)

• Non-perturbative Approach to effective chiral Lagrangians and Meson Interactions
• KK bar scattering amplitude to one loop in chiral perturbation theory, its unitarization and pion form factors

Cited by in corpus (7)

• Meson-meson scattering within one loop Chiral Perturbation Theory and its unitarization
• New study of the isotensor pi-pi interaction
• Possible new resonance from $W_L{W}_L$-$hh$ interchannel coupling
• Collision times in pi-pi and pi-K scattering and spectroscopy of meson resonances
• Multi-Meson Model for the $D^{+}\to K^{+}{K}^{-}{K}^{+}$ decay amplitude
• A New Decomposition of pion-pion S-wave Interaction
• Multibody decay analyses -- a new phenomenological model for meson-meson subamplitudes