PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Nucleon Charges and Sigma Terms from $N_f = 2 + 1$ QCD
D. Jenkins*, S. Collins and G. Bali
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Pre-published on: May 16, 2022
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We report on recent progress of our analysis of the nucleon sigma terms, as well as the singlet scalar, axial and tensor nucleon charges.
These are determined employing the CLS gauge ensembles, which are generated using the Lüscher-Weisz gluon action and the non-perturbatively improved Sheikholeslami-Wohlert fermion action with \(N_{f}=2+1\) dynamical fermions.
For the ensembles analysed thus far, the pion masses range from 200 MeV up to 410 MeV, and the lattice spacings take five values between 0.09~fm and 0.04~fm.
We have employed a variety of methods to determine the relevant correlation functions, including the sequential source method for connected contributions and the truncated solver method for disconnected contributions.
DOI: https://doi.org/10.22323/1.396.0179
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