Excited state systematics in extracting nucleon electromagnetic form factors

Stefano Capitani, Michele Della Morte, Georg von Hippel, Benjamin Jäger, Bastian Knippschild, Harvey B. Meyer, Thomas D. Rae, Hartmut Wittig

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

We present updated preliminary results for the nucleon electromagnetic form factors for non-perturbatively $\mathcal{O}(a)$ improved Wilson fermions in $N_f=2$ QCD measured on the CLS ensembles. The use of the summed operator insertion method allows us to suppress the influence of excited states in our measurements. A study of the effect that excited state contaminations have on the $Q^2$ dependence of the extracted nucleon form factors may then be made through comparisons of the summation method to standard plateau fits, as well as to excited state fits.
Original languageEnglish
JournalP o S - Proceedings of Science
ISSN1824-8039
DOIs
Publication statusPublished - 6. Nov 2012
Externally publishedYes
Event30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012 - Cairns, Australia
Duration: 24. Jun 201229. Jun 2012

Conference

Conference30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012
Country/TerritoryAustralia
CityCairns
Period24/06/201229/06/2012

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