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arXiv · 1404.2301

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

A. Calle Cordon·T. DeGrand·J. L. Goity
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Abstract

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 sub-leading in 1/Nc effects in the spin-flavor singlet component of the baryon masses as well as in the hyperfine splittings.

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A. Calle Cordon, T. DeGrand, J. L. Goity. 2014-04-08. The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory. https://doi.org/10.1103/physrevd.90.014505

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