Study of scalar mesons in chiral Lagrangian frameworks
Deirdre Black, Jonathan Gaunt
TL;DR
This paper reviews two chiral Lagrangian methods for analyzing scalar mesons and pion-pion scattering above 1 GeV, comparing unitarization techniques and presenting preliminary results on light scalar mesons.
Contribution
It introduces and compares two unitarization approaches within chiral Lagrangian frameworks for scalar meson studies, including initial findings on pion-pion scattering.
Findings
Preliminary results on K-matrix unitarization of pion-pion scattering.
Insights into light scalar mesons.
Comparison of non-linear and linear chiral Lagrangian approaches.
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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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Advanced NMR Techniques and Applications · Cosmology and Gravitation Theories