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Title: The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory

Baryon masses at varying values of Nc and light quark masses are studied with Lattice QCD and the results are analyzed in a low energy effective theory based on a combined framework of the 1/Nc and Heavy Baryon Chiral Perturbation Theory expansions. Lattice QCD results for Nc=3, 5 and 7 obtained in quenched calculations, as well as results for unquenched calculations for Nc=3, are used for the analysis. The results are consistent with a previous analysis of Nc=3 LQCD results, and in addition permit the determination of sub-leading in 1/Nc effects in the spin-flavor singlet component of the baryon masses as well as in the hyperfine splittings.
 [1] ;  [2] ;  [1]
  1. JLAB
  2. University of Colorado
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY-14-1866; DOE/OR/23177-3040; arXiv:1404.2301
FG02-04ER41290; NSF PHY-0855789; NSF PHY-1307413
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 90; Journal Issue: 01
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States