Quark-Antiquark Bound States in an Extended QCD_2 Model

Details Quark-Antiquark Bound States in an Extended QCD_2 Model Quark-Antiquark Bound States in an Extended QCD_2 Model

2004-12-21

arxiv.org/abs/hep-th/0412248v2

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures, Latex. References corrected. Talk given at 5th Latin American Symposium on High Energy Physics (V-SILAFAE)

Scientific paper

We study an extended QCD model in 2D obtained from QCD in 4D by compactifying two spatial dimensions and projecting onto the zero-mode subspace. This system is found to induce a dynamical mass for transverse gluons -- adjoint scalars in QCD(2), and to undergo a chiral symmetry breaking with the full quark propagators yielding non-tachyonic, dynamical quark masses, even in the chiral limit. We construct the hadronic color singlet bound-state scattering amplitudes and study quark-antiquark bound states which can be classified in this model by their properties under Lorentz transformations inherited from 4D.

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