Low-energy constants from charmed baryons on QCD lattices
Abstract
We study the light quark-mass dependence of charmed baryon masses as measured by various QCD lattice collaborations. A global fit to such data based on the chiral SU(3) Lagrangian is reported on. All low-energy constants that are relevant at next-to-next-to-next-to-leading order (NLO) are determined from the lattice data sets where constraints from sum rules as they follow from large-Nc QCD at subleading order are considered. The expected hierarchy for the low-energy constants in the 1/Nc expansion is confirmed by our global fits to the lattice data. With our results the low-energy interaction of the Goldstone bosons with the charmed baryon ground states is well constrained and the path towards realistic coupled-channel computations in this sector of QCD is prepared.
Keywords
Cite
@article{arxiv.1906.07497,
title = {Low-energy constants from charmed baryons on QCD lattices},
author = {Yonggoo Heo and Xiao-Yu Guo and Matthias F. M. Lutz},
journal= {arXiv preprint arXiv:1906.07497},
year = {2020}
}
Comments
17 pages, 4 tables, 4 figures