Pion-cloud effects in the BSE description of mesons
High Energy Physics - Phenomenology
2009-06-25 v1 Nuclear Theory
Abstract
We investigate the effect of including hadronic resonance contributions in the description of light quarks and mesons. To this end we take into account the back-coupling of the pion onto the quark propagator within the non-perturbative continuum framework of Schwinger-Dyson equations (SDE) and Bethe-Salpeter equations (BSE), in essence describing the so-called \emph{pion-cloud}. As a result of our study we find that an unquenching of this form provides for considerable effects in the spectrum of light mesons.
Cite
@article{arxiv.0812.1499,
title = {Pion-cloud effects in the BSE description of mesons},
author = {Richard Williams and Christian S. Fischer},
journal= {arXiv preprint arXiv:0812.1499},
year = {2009}
}
Comments
Talk given at the 8th Conference "Quark Confinement and the Hadron Spectrum", Mainz, Germany, 1-6 September 2008