Nucleon average quark momentum fraction with Nf = 2+1 Wilson fermions
- Publication type:
- Journal article
- Metadata:
-
- Abstract
- <jats:p>We report on an analysis of the average quark momentum fraction of the nucleon and related quantities using <jats:italic>N</jats:italic><jats:sub>f</jats:sub> = 2 + 1 Wilson fermions. Computations are performed on four CLS ensembles covering three values of the lattice spacing at pion masses down to <jats:italic>M<jats:sub>π</jats:sub></jats:italic> ≈ 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.</jats:p>
- Autoren
- Konstantin Ottnad
- Tim Harris
- Harvey Meyer
- Georg von Hippel
- Jonas Wilhelm
- Hartmut Wittig
- DOI
- 10.1051/epjconf/201817506026
- Editoren
- M Della Morte
- P Fritzsch
- E Gámiz Sánchez
- C Pena Ruano
- eISSN
- 2100-014X
- Zeitschrift
- EPJ Web of Conferences
- Online publication date
- 2018
- Paginierung
- 06026 - 06026
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Herausgeber
- EDP Sciences
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817506026
- Datum der Datenerfassung
- 2020
- Titel
- Nucleon average quark momentum fraction with <i>N</i><sub>f</sub> = 2+1 Wilson fermions
- Ausgabe der Zeitschrift
- 175
Data source: Crossref
- Other metadata sources:
-
- Abstract
- We report on an analysis of the average quark momentum fraction of the nucleon and related quantities using $N_\mathrm{f}=2+1$ Wilson fermions. Computations are performed on four CLS ensembles covering three values of the lattice spacing at pion masses down to $M_\pi \approx 200\,\mathrm{MeV}$. Several source-sink separations ($\sim 1.0\,\mathrm{fm}$ to $\sim 1.4\,\mathrm{fm}$) 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.
- Autoren
- Konstantin Ottnad
- Tim Harris
- Harvey Meyer
- Georg von Hippel
- Jonas Wilhelm
- Hartmut Wittig
- Autoren-URL
- http://arxiv.org/abs/1710.07816v1
- Schlüsselwörter
- hep-lat
- hep-lat
- Notes
- 8 pages, 3 figures, 2 tables. Talk presented at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain
- Datum der Veröffentlichung
- 2017
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817506026
- Datum der Datenerfassung
- 2017
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2017
- Titel
- Nucleon average quark momentum fraction with $N_\mathrm{f}=2+1$ Wilson fermions
Files
1710.07816v1.pdf
Data source: arXiv
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