Magnetic moments of the lowest-lying singly heavy baryons

摘要

A light baryon is viewed as N-c valence quarks bound by meson mean fields in the large N-c limit. In much the same way a singly heavy baryon is regarded as N-c - 1 valence quarks bound by the same mean fields, which makes it possible to use the properties of light baryons to investigate those of the heavy baryons. A heavy quark being regarded as a static color source in the limit of the infinitely heavy quark mass, the magnetic moments of the heavy baryon are determined entirely by the chiral soliton consisting of a light-quark pair. The magnetic moments of the baryon sextet are obtained by using the parameters fixed in the light-baryon sector. In this mean-field approach, the numerical results of the magnetic moments of the baryon sextet with spin 3/2 are just 3/2 larger than those with spin 1/2. The magnetic moments of the bottom baryons are the same as those of the corresponding charmed baryons. (C) 2018 The Authors. Published by Elsevier B.V.