1997/03/31 by M. Harada, Masayasu Harada, A. Qamar +5
Physics and Astronomy · #Atomic physics #Baryon #High-Energy Particle Collisions Research #Hyperfine structure #Isospin #Meson #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Spectrum (functional analysis) #Spin (aerodynamics) #Vector meson #hep-ph
paper · pdf · doi:10.1016/s0375-9474(97)00400-4
published as Nucl.Phys.A625:789,1997 · Modification of the discussion on the numerical results, version to be published in Nucl. Phys. A
arxiv created 1997/07/14 · openalex publication_date 1997/11/01 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We calculate the next-to-leading order contribution to the masses of the heavy baryons in the bound-state approach for baryons containing a heavy quark. These 1NC corrections arise when states of good spin and isospin are generated from the background solition of the light meson fields. Our study is motivated by the previously established result that light vector meson fields are required for this soliton in order to reasonably describe the spectrum of both the light and the heavy baryons. We note that the inclusion of light vector mesons significantly improves the agreement of the predicted hyperfine splitting with experiment. A number of aspects of this somewhat complicated calculation are discussed in detail.