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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

Nucleon charges and quark momentum fraction with $N_f=2+1$ Wilson fermions

Jul 26, 2018, 12:00 PM
106 (Kellogg Hotel and Conference Center)


Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Hadron Structure Hadron Structure


Dr Konstantin Ottnad (University of Mainz)


We present a nucleon structure analysis including the charges of isovector dimension-three operators as well as the forward matrix elements of twist-2, dimension-four operators. Computations are performed on CLS ensembles with $N_f=2+1$ Wilson fermions, covering four values of the lattice spacing and pion masses down to $M_\pi \approx 200\,\mathrm{MeV}$. Several source-sink separations (typically $\sim 1.0\,\mathrm{fm}$ to $\sim 1.5\,\mathrm{fm}$) allow us to assess excited-state contaminations. Results on each ensemble are obtained from simultaneous two-state fits including all observables and all available source-sink separations with the mass gap as a free fit parameter. Finally, the chiral and continuum extrapolation is performed to extract physical results.

Primary author

Dr Konstantin Ottnad (University of Mainz)


Dr Georg von Hippel (University of Mainz) Prof. Hartmut Wittig (Johannes Gutenberg Universität) Prof. Harvey B. Meyer (Johannes Gutenberg University Mainz) Mr Jonas Wilhelm (University of Mainz - Institut for Nuclear Physics) Dr Tim Harris (Milano Bicocca)

Presentation Materials