2014/04/08 by A. Calle Cordón, A. Calle Cordon, T. DeGrand +2 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.90.014505
published as Phys. Rev. D 90, 014505 (2014) · 28 pages, 7 figures
arxiv created 2014/04/08 · openalex publication_date 2014/07/14 · arxiv updated 2014/07/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 lattice QCD results, and in addition permit the determination of subleading in 1/Nc effects in the spin-flavor singlet component of the baryon masses, as well as in the hyperfine splittings.