论文标题
带有$ n_f = 2+1 $ $ $ \ MATHCAL {o}（a）$改进的Wilson Fermions的Pion-Nucleon Sigma术语
The pion-nucleon sigma term with $N_f=2+1$ $\mathcal{O}(a)$-improved Wilson fermions
论文作者
论文摘要
我们在CLS合奏中对Pion-Nucleon Sigma术语进行分析，其中$ n_f = 2+1 $ $ \ MATHCAL {O}（a）$ - 改进了Wilson Fermions。我们基于pion质量从130 MEV到大约350 MEV的合奏进行手性插值。该分析涵盖了$ a \ of [0.05 \，\ rm {fm} \ ldots 0.09 \，\ rm {fm}] $之间的四个晶格间距，允许估计与Lattice Artefacts相关的系统。
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.
