The anomalous gamma -> pi^+ pi^0 pi^- form factor and the light-quark mass functions at low momenta

The anomalous gamma -> pi^+ pi^0 pi^- form factor and the light-quark mass functions at low momenta

The gamma -> 3 pi form factor was calculated in a simple-minded constituent model with a constant quark mass parameter, as well as in the Schwinger-Dyson approach. The comparison of these and various other theoretical results on this anomalous process, as well as the scarce already available data...

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Veröffentlicht in:arXiv.org 2000-12
Hauptverfasser: Klabucar, Dubravko, Bistrovic, Bojan
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Constituents
Form factors
Quarks
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description The gamma -> 3 pi form factor was calculated in a simple-minded constituent model with a constant quark mass parameter, as well as in the Schwinger-Dyson approach. The comparison of these and various other theoretical results on this anomalous process, as well as the scarce already available data (hopefully to be supplemented by more accurate CEBAF data), seem to favor Schwinger-Dyson modeling which would yield relatively small low-momentum values of the constituent (dynamically dressed) quark mass function.
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subjects Constituents
Form factors
Quarks
title The anomalous gamma -> pi^+ pi^0 pi^- form factor and the light-quark mass functions at low momenta
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