Pion loop contribution to ? - ? mixing and mass splitting
- 1 March 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 55 (3), 1477-1491
- https://doi.org/10.1103/PhysRevC.55.1477
Abstract
We study the self-energy amplitudes for the - meson system produced by an effective field theory model at the quark level characterized by a finite range quark-quark interaction and an isospin breaking bare quark mass difference Dynamical effects associated with confinement and dressing of quarks and the finite size of the produced meson modes are treated. Parameters of this approach, previously constrained by soft pion physics, are here supplemented in a minimal way to reproduce and Calculations are carried out up to the one-pion-loop level and the predictions for - mixing, mass splitting, the width and the symmetry breaking coupling constant and form factor are presented. The contribution of the direct process relative to the process is discussed within this model.
Keywords
This publication has 37 references indexed in Scilit:
- Meson transition form factors from a QCD model field theoryProgress in Particle and Nuclear Physics, 1996
- Electromagnetic pion form factor and neutral pion decay widthNuclear Physics A, 1996
- Electromagnetic from factors of charged and neutral kaonsPhysics Letters B, 1996
- Calculation of the anomalousPhysics Letters B, 1996
- The off-shell axial anomaly via the transitionPhysics Letters B, 1995
- Charge symmetry breaking via ϱω mixing from model quark-gluon dynamicsPhysics Letters B, 1994
- Dyson-Schwinger equations and their application to hadronic physicsProgress in Particle and Nuclear Physics, 1994
- scattering in a QCD-based model field theoryPhysical Review D, 1994
- QCD bosonization and the meson effective actionPhysical Review D, 1987
- Soliton bag models of hadrons from QCDPhysical Review D, 1985