Non-perturbative Approach to effective chiral Lagrangians and Meson Interactions

Preprint

30 March 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9803242

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(p^2) and O(p^4) chiral Lagrangians. Our free parameters are those of the O(p^4) Lagrangian. When applied to the meson-meson interaction, it yields a remarkable agreement with data up to sqrt{s}=1.2 GeV, dynamically generating the sigma, f_0, a_0,rho and K^* resonances. Further applications are also proposed.

Keywords

PERTURBATIVE APPROACH
REMARKABLE AGREEMENT
CHIRAL LAGRANGIANS
MESON INTERACTION
EFFECTIVE CHIRAL
COUPLED CHANNEL
CHANNEL UNITARY
LOW ENERGY

All Related Versions

Version 1, 1998-03-04, ArXiv
Version 2, 1998-03-30, ArXiv
Published version: Physical Review Letters, 80 (16), 3452.

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