We present an analysis of the pion-nucleon sigma term on the CLS ensembles with $N_f=2+1$ flavors of $\mathcal{ O}(a)$-improved Wilson fermions. We perform a chiral interpolation based on ensembles with pion masses ranging from 130 MeV to roughly 350 MeV. The analysis covers four lattice spacings between $a\approx [0.05 \, \rm{ fm}\ldots 0.09\, \rm{ fm}]$, allowing for an estimate of systematics associated with lattice artefacts.
Categories: hep-lat