Octet and decuplet baryon sigma terms in relativistic SU(3) chiral effective theory*

We present a new comprehensive analysis of the SU(3) octet and decuplet baryon masses and sigma terms. Chiral extrapolations are made to high precision 2+1 flavor lattice QCD data using the latest relativistic SU(3) chiral effective theory framework with finite range regularization. The effects of various systematic uncertainties are explored, such as different scale setting schemes for the lattice data as well as the model dependence from the chiral expansion of the baryon masses. Good agreement is found between all schemes. The quark fractions of the baryon masses are also presented and their implications on the trace anomalies of the energy momentum tensors and heavy quark sigma terms are discussed.