Speaker
Matthias F.M. Lutz
(GSI)
Description
In this talk I discuss Low-Energy Constants (LEC) in the chiral Lagrangian with three light flavors from current Lattice QCD data. The LEC are adjusted to describe the baryon octet and decuplet masses from a large set of lattice ensembles at N3LO, where finite-box and discretization effects are considered. Faithful results require in particular accurate baryon masses on flavor symmetric ensembles. The analysis is performed for all ensembles with pion and kaon masses smaller than 550 MeV where our loop contributions are evaluated systematically in terms of on-shell meson and baryon masses. The set of LEC is most relevant for meson-baryon scattering processes as computed from the chiral Lagrangian in coupled-channel approaches.
Primary author
Matthias F.M. Lutz
(GSI)
