Magnetic moments of the lowest-lying singly heavy baryons

Yang, Ghil-Seok (Department of Physics, Soongsil University, Seoul, 06978, Republic of Korea) ; Kim, Hyun-Chul  (Department of Physics, Inha University, Incheon, 22212, Republic of Korea) (Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka, 567-0047, Japan) (School of Physics, Korea Institute for Advanced Study (KIAS), Seoul, 02455, Republic of Korea)

04 May 2018

Abstract: A light baryon is viewed as Nc valence quarks bound by meson mean fields in the large Nc limit. In much the same way a singly heavy baryon is regarded as Nc−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.


Published in: Physics letters B (2018)
Published by: Elsevier
DOI: 10.1016/j.physletb.2018.04.042
License: CC-BY-3.0



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