Nonperturbative Approach to Effective Chiral Lagrangians and Meson Interactions

1998/03/30 by J. A. Oller, E. Oset, J. R. Peláez +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevlett.80.3452

published as Phys.Rev.Lett.80:3452-3455,1998 · References corrected, to be published in Physical Review Letters

arxiv created 1998/03/30 · openalex publication_date 1998/04/20 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We develop a coupled channel unitary approach describing the behavior at higher energies of systems whose low-energy dynamics is given by effective O(p²) and O(p⁴) chiral Lagrangians. Our free parameters are those of the O(p⁴) Lagrangian. When applied to the meson-meson interaction, it yields a remarkable agreement with data up to √(s)\ensuremath≃1.2GeV, dynamically generating the \ensuremathσ, f₀, a₀, \ensuremathρ, and K^* resonances. Further applications are also proposed.

Citations

• Chiral symmetry amplitudes in the S-wave isoscalar and isovector channels and the σ, f0(980), a0(980) scalar mesons
• Chiral perturbation theory to one loop

Cited by

• WWscattering at the CERN LHC