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Massive-quark baryons as skyrmions:Magnetic moments

Authors
Journal
Nuclear Physics A
0375-9474
Publisher
Elsevier
Publication Date
Volume
534
Identifiers
DOI: 10.1016/0375-9474(91)90458-i
Disciplines
  • Physics

Abstract

Abstract The magnetic moments of the massive-quark baryons-strange and charmed hyperons - are calculated in the skyrmion description in which the baryon with a heavy flavor is described as a heavy pseudoscalar meson Φ Q composed of a heavy quark Q and a light antiquark ā “wrapped” by - and bound to - an SU(2) soliton. We use the original Skyrmetype lagrangian supplemented by a symmetry breaking term involving derivatives of the chiral field U. Both the spectra and the magnetic moments predicted by this model are quite similar to those of quark models. Our results provide evidence that the skyrmion description works equally well for massive-quark baryons as it does for light-quark (chiral-symmetry) baryons, supporting the suggestion that a hierarchy of induced gauge fields associated with layers of length scales involved in the strong interactions play an important role.

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