arXiv:1212.2032·v2·High Energy Physics — Lattice
Low-lying Lambda Baryons from the Lattice
Georg P. Engel🇦🇹 · C. B. Lang🇦🇹 · Andreas Schäfer🇩🇪
Abstract
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.
Comments: 6 pages, 6 figures, accepted for publication in PRD