A Bethe--Salpeter Description of Light Mesons

Details A Bethe--Salpeter Description of Light Mesons A Bethe--Salpeter Description of Light Mesons

2003-07-04

arxiv.org/abs/hep-ph/0307066v1

AIPConf.Proc.688:33-44,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented by HW at the international Scalar Meson Workshop, Utica, NY, May 2003; 12 pages, uses aip style files

Scientific paper

10.1063/1.1632192

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.

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