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arxiv: 0812.1499 · v1 · submitted 2008-12-08 · ✦ hep-ph · nucl-th

Pion-cloud effects in the BSE description of mesons

classification ✦ hep-ph nucl-th
keywords mesonsdescriptioneffectsequationslightpion-cloudaccountback-coupling
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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.

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