# Nucleon-pion-state contribution in lattice calculations of the nucleon charges $g_A,g_T$ and $g_S$

@inproceedings{Bar2016NucleonpionstateCI, title={Nucleon-pion-state contribution in lattice calculations of the nucleon charges \$g\_A,g\_T\$ and \$g\_S\$}, author={Oliver Bar}, year={2016} }

We employ leading order covariant chiral perturbation theory to compute the nucleon-pion-state contribution to the 3-point correlation functions one typically measures in lattice QCD to extract the isovector nucleon charges gA, gT and gS . We estimate the impact of the nucleon-pion-state contribution on both the plateau and the summation method for lattice simulations with physical pion masses. The nucleon-pion-state contribution results in an overestimation of all charges with both methods…

## 12 Citations

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