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

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 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.

Authors:
 [1];  [2];  [1]
  1. JLAB
  2. University of Colorado
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1136853
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:
AC05-06OR23177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 90; Journal Issue: 01
Country of Publication:
United States
Language:
English

Citation Formats

Calle Cordon, Alvaro C., DeGrand, Thomas A., and Goity, Jose L.. The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.014505.
Calle Cordon, Alvaro C., DeGrand, Thomas A., & Goity, Jose L.. The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory. United States. doi:10.1103/PhysRevD.90.014505.
Calle Cordon, Alvaro C., DeGrand, Thomas A., and Goity, Jose L.. Tue . "The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory". United States. doi:10.1103/PhysRevD.90.014505. https://www.osti.gov/servlets/purl/1136853.
@article{osti_1136853,
title = {The Nc dependencies of baryon masses: Analysis with Lattice QCD and Effective Theory},
author = {Calle Cordon, Alvaro C. and DeGrand, Thomas A. and Goity, Jose L.},
abstractNote = {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.},
doi = {10.1103/PhysRevD.90.014505},
journal = {Physical Review D},
number = 01,
volume = 90,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 2014},
month = {Tue Jul 01 00:00:00 EDT 2014}
}