475 research outputs found
Soft QCD Modeling of Meson Electromagnetic Form Factors
We summarize recent progress in soft QCD modeling based on the set of
Dyson--Schwinger equations truncated to ladder-rainbow level. We pay particular
attention to electromagnetic elastic and transition form factors of the pion.
This covariant approach accommodates quark confinement and implements the QCD
one-loop renormalization group behavior. The dressed quark propagators are
compared to the most recent lattice-QCD data.Comment: For Proceedings of the Workshop on Lepton Scattering, Hadrons, and
QCD, Adelaide, Australia, March-April 2001; LaTeX, 9 pages, 5 eps figures, WS
style file included; to be publishe
Analysis of full-QCD and quenched-QCD lattice propagators
Recent lattice-QCD results for the dressed-gluon propagator are used within
the quark Dyson-Schwinger equation to determine the gluon-quark vertex dressing
necessary to reproduce the lattice-QCD results for the dressed-quark
propagator. Both quenched and full QCD lattice simulations, for a range of low
quark current masses, are analyzed. The chiral extrapolation is made through
this continuum DSE form. Resulting chiral and physical pion observables are
investigated.Comment: Talk given at PANIC 2005 Conference, Santa Fe, October 2005. To be
published in the Proceeding
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