Exotic Baryons in Two-Dimensional QCD

Details Exotic Baryons in Two-Dimensional QCD Exotic Baryons in Two-Dimensional QCD

2005-02-21

arxiv.org/abs/hep-ph/0502193v1

JHEP 0508:081,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages latex, no figures

Scientific paper

10.1088/1126-6708/2005/08/081

Two-dimensional QCD has often been used as a laboratory for studying the full four-dimensional theory, providing, for example, an explicit realization of baryons as solitons. We review aspects of conventional baryons in two-dimensional QCD, including the classical and quantum contributions to their masses. We then discuss the spectrum of exotic baryons in two-dimensional QCD, commenting on the solitonic radius inferred from the excitation spectrum as well as the two-dimensional version of the Goldberger-Treiman relation relating meson couplings to current matrix elements. Two-dimensional QCD provides strong overall support to the chiral-soliton picture for the structure of normal and exotic baryons in four dimensions.

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