The role of resonances in chiral perturbation theory
NAGIOS: RODERIC FUNCIONANDO

The role of resonances in chiral perturbation theory

DSpace Repository

The role of resonances in chiral perturbation theory

Show full item record

View       (921.6Kb)

    
Ecker, Gerhard; Gasser, Jürg; Pich Zardoya, Antonio Perfil; Rafael, Eduardo de
This document is a artículoDate1989

Este documento está disponible también en : http://hdl.handle.net/10550/42270
The strong interactions of low-lying meson resonances (spin <= 1) with the octet of pseudoscalar mesons ( pi, K, eta) are considered to lowest order in the derivative expansion of chiral SU(3). The resonance contributions to the coupling constants of the O( p4) effective chiral lagrangian involving pseudoscalar fields only are determined. These low-energy coupling constants are found to be dominated by the resonance contributions. Although we do not treat the vector and axial-vector mesons as gauge bosons of local chiral symmetry, vector meson dominance emerges as a prominent result of our analysis. As a further application of chiral resonance couplings, we calculate the electromagnetic pion mass difference to lowest order in chiral perturbation theory with explicit resonance fields.

    Ecker, Gerhard Gasser, Jürg Pich Zardoya, Antonio Rafael, Eduardo de 1989 The role of resonances in chiral perturbation theory Nuclear Physics B 321 2 311 342
http://dx.doi.org/10.1016/0550-3213(89)90346-5

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search

Browse

Statistics