nucleon average quark momentum fraction with nf = 2+1 wilson fermions
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ID: 201779
2018
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Abstract
We report on an analysis of the average quark momentum fraction of
the nucleon and related quantities using
Nf = 2 + 1 Wilson fermions. Computations
are performed on four CLS ensembles covering three values of the
lattice spacing at pion masses down to Mπ ≈ 200 MeV. Several source-sink separations (~ 1:0 fm to ~ 1:4 fm) are used to assess the excited-state contamination. To gain further insight, the generalized pencil-of-functions approach has been implemented to reduce the excited-state contamination in the relevant two-and three-point functions. Preliminary results are shown for the isovector nucleon charges from vector, axial vector and tensor derivative (twist-2) operators.
| Reference Key |
konstantin2018epjnucleon
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|---|---|
| Authors | ;Ottnad Konstantin;Harris Tim;Meyer Harvey;von Hippel Georg;Wilhelm Jonas;Wittig Hartmut |
| Journal | utilitas mathematica |
| Year | 2018 |
| DOI |
10.1051/epjconf/201817506026
|
| URL | |
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