Speaker
Lisheng Geng
Summary
Baryon sigma terms play an important role in our understanding of the quark-flavor structure of baryons. Recent
state-of-the-art $n_f=2+1$ lattice QCD simulations of octet baryon masses have allowed us to extract the so-called baryon
sigma terms via the Feynmann-Hellman theorem using chiral perturbation theory. In this talk, we review the systematic study
carried out in the fully covariant baryon chiral perturbation theory and discuss the inconsistency of the nucleon-pion
sigma terms predicted by different approaches.
