In a lattice QCD calculation with two light dynamical Chirally Improved (CI) quarks we determine ground state and some excited state masses in all four Lambda baryon channels 1/2^\pm and 3/2^\pm. We perform an infinite volume extrapolation and confirm the widely discussed Lambda(1405). We also analyze the amount of octet-singlet mixing, which is helpful in comparing states with the quark model.
@article{arxiv.1212.2032,
title = {Low-lying Lambda Baryons from the Lattice},
author = {Georg P. Engel and C. B. Lang and Andreas Schäfer},
journal= {arXiv preprint arXiv:1212.2032},
year = {2015}
}
Comments
6 pages, 6 figures, accepted for publication in PRD