Hyperfine mass splittings of baryons containing a heavy quark in large N QCD

1993/07/11 by Elizabeth Jenkins, E. Jenkins · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(93)91639-5

published as Phys.Lett.B315:447-451,1993 · (8 pages, no figures, uses harvmac), UCSD/PTH 93-20

arxiv created 1993/07/11 · openalex publication_date 1993/10/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The hyperfine mass splittings of baryons containing a heavy quark are derived at leading order in large N QCD. Hyperfine splittings either preserve or violate heavy quark spin symmetry. Previous work proves that the splittings which preserve heavy quark spin symmetry are proportional to \bf J² at order 1/N, where J is the angular momentum of the light degrees of freedom of the baryon. This work proves that the splittings which violate heavy quark spin symmetry are proportional to \bf J ⋅ \bf S_Q at order 1/(N m_Q) in the 1/N and 1/m_Q expansions.

Citations

• Baryon hyperfine mass splittings large N QCD
• Light quark spin-flavor symmetry for baryons containing a heavy quark in large N QCD

Cited by

• Spin-flavor structure of largeNcbaryons
• Baryon hyperfine mass splittings large N QCD
• Lattice test of1/Ncbaryon mass relations
• Photoproduction ofl=1baryons: Quark model versus largeNcQCD
• Low-energy sum rules and large-Nc consistency conditions