PoS - Proceedings of Science
Volume 430 - The 39th International Symposium on Lattice Field Theory (LATTICE2022) - Hadron Structure
The pion-nucleon sigma term with $N_f = 2 + 1$ O($a$)-improved Wilson fermions
D. Djukanovic*, A. Agadjanov, G. von Hippel, H. Meyer, K. Ottnad and H. Wittig
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Pre-published on: March 15, 2023
Published on: April 06, 2023
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
DOI: https://doi.org/10.22323/1.430.0100
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