Study of scalar mesons in chiral Lagrangian frameworks

2008/01/16 by Deirdre Black, Jonathan R. Gaunt, Black, Deirdre +1
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.0801.2472

openalex publication_date 2008/01/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We review two approaches to studying pseudoscalar meson-meson scattering amplitudes to beyond 1 GeV using non-linear and linear chiral Lagrangians. These approaches use two different unitarisation techniques - a generalised Breit Wigner prescription and K-matrix unitarization respectively. We also report some preliminary findings on K-matrix unitarisation of the I=J=0 pion-pion scattering amplitude in the non-linear chiral Lagrangian approach and make some remarks about the light scalar mesons.

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