Main Image
Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Hadron Structure
Nucleon form factors and couplings with $N_{\mathrm f}=2+1$ Wilson fermions
D. Djukanovic, T. Harris,* G. von Hippel, P. Junnarkar, H.B. Meyer, H. Wittig
*corresponding author
Full text: pdf
Pre-published on: 2017-02-27 13:24:06
Published on: 2017-03-24 10:20:24
Abstract
We present updated results on the nucleon electromagnetic form factors and axial coupling calcu- lated using CLS ensembles with $N_\mathrm{f}=2+1$ dynamical flavours of Wilson fermions. The measure- ments are performed on large, fine lattices with a pseudoscalar mass reaching down to 200 MeV. The truncated-solver method is employed to reduce the variance of the measurements. Estimation of the matrix elements is challenging due to large contamination from excited states and further investigation is necessary to bring these effects under control.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.