A Bethe--Salpeter Description of Light Mesons
Abstract
We present a covariant approach to describe the low--lying scalar, pseudoscalar, vector and axialvector mesons as quark--antiquark bound states.This approach is based on an effective interaction modeling of the non--perturbative structure of the gluon propagator that enters the quark Schwinger--Dyson and meson Bethe--Salpeter equations. We extract the meson masses and compute the pion and kaon decay constants. We obtain a quantitatively correct description for pions, kaons and vector mesons while the calculated spectra of scalar and axialvector mesons suggest that their structure is more complex than being quark--antiquark bound states.
Cite
@article{arxiv.hep-ph/0307066,
title = {A Bethe--Salpeter Description of Light Mesons},
author = {H. Weigel and R. Alkofer and P. Watson},
journal= {arXiv preprint arXiv:hep-ph/0307066},
year = {2008}
}
Comments
Talk presented by HW at the international Scalar Meson Workshop, Utica, NY, May 2003; 12 pages, uses aip style files