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

doi:10.22323/1.164.0177

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

Johannes Gutenberg University

Research output: Contribution to journal › Conference article › Research › peer-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 language	English
Journal	P o S - Proceedings of Science
ISSN	1824-8039
DOIs	https://doi.org/10.22323/1.164.0177
Publication status	Published - 6. Nov 2012
Externally published	Yes
Event	30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012 - Cairns, Australia Duration: 24. Jun 2012 → 29. Jun 2012

Conference

Conference	30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012
Country/Territory	Australia
City	Cairns
Period	24/06/2012 → 29/06/2012

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10.22323/1.164.0177Licence: CC BY-NC-SA

Cite this

@inproceedings{73b5cfc8e1484e6c837843a86c1a74b3,

title = "Excited state systematics in extracting nucleon electromagnetic form factors",

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. ",

keywords = "hep-lat",

author = "Stefano Capitani and Morte, {Michele Della} and Hippel, {Georg von} and Benjamin J{\"a}ger and Bastian Knippschild and Meyer, {Harvey B.} and Rae, {Thomas D.} and Hartmut Wittig",

year = "2012",

month = nov,

day = "6",

doi = "10.22323/1.164.0177",

language = "English",

journal = "P o S - Proceedings of Science",

issn = "1824-8039",

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note = "30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012 ; Conference date: 24-06-2012 Through 29-06-2012",

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TY - GEN

T1 - Excited state systematics in extracting nucleon electromagnetic form factors

AU - Capitani, Stefano

AU - Morte, Michele Della

AU - Hippel, Georg von

AU - Jäger, Benjamin

AU - Knippschild, Bastian

AU - Meyer, Harvey B.

AU - Rae, Thomas D.

AU - Wittig, Hartmut

PY - 2012/11/6

Y1 - 2012/11/6

N2 - 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.

AB - 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.

KW - hep-lat

U2 - 10.22323/1.164.0177

DO - 10.22323/1.164.0177

M3 - Conference article

SN - 1824-8039

JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

T2 - 30th International Symposium on Lattice Field Theory (Lattice 2012) : Cairns, Australia, June 24-29, 2012

Y2 - 24 June 2012 through 29 June 2012

ER -

Excited state systematics in extracting nucleon electromagnetic form factors

Abstract

Conference

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