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arXiv · hep-ph/9502328

Diquarks in a chiral soliton field

U. Zückert·R. Alkofer·H. Weigel·H. Reinhardt
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Abstract

In the Nambu--Jona-Lasinio model baryons are either considered as quark-diquark-composites or the soliton configurations of the model are interpreted as baryons. As a first step towards constructing a hybrid model, which possesses a dynamical interplay between both pictures, the Bethe-Salpeter equation for diquarks in the background of a soliton configuration is solved. The presence of the soliton causes a significant reduction of the resulting bound state eigenenergy of the diquark. As a consequence a unit baryon number configuration may be constructed with a mass lower than the energy of the soliton. An estimate of the influence of the diquark on the meson fields indicates a small decrease of the extension of the soliton due to diquark correlations.

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U. Zückert, R. Alkofer, H. Weigel, H. Reinhardt. 1995-02-16. Diquarks in a chiral soliton field. https://doi.org/10.1016/0370-2693(95)01206-6

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