Charge Form Factor of the Neutron at Low Momentum Transfer from the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mover accent="true"><mml:mi mathvariant="normal">H</mml:mi><mml:mo>→</mml:mo></mml:mover><mml:mprescripts /><mml:none /><mml:mn>2</mml:mn></mml:mmultiscripts><mml:mo stretchy="false">(</mml:mo><mml:mover accent="true"><mml:mi>e</mml:mi><mml:mo>→</mml:mo></mml:mover><mml:mo>,</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:

Geis, E.; Köhl, M.; Ziskin, V.; Akdoğan, T.; Arenhövel, H.; Alarcón, R.; Bertozzi, W.; Booth, E.C.; Botto, T.; Calarco, J. R.; Clasie, B.; Crawford, Chris; DeGrush, Adam J.; Donnelly, T. W.; Dow, K.; Farkhondeh, M.; Fatemi, R.; Filoti, O.; Franklin, Wilbur A.; H, Gao; Gilad, S.; Hasell, D.; Karpius, Peter Joseph; Kolster, H.; Lee, T.; Maschinot, A.; Matthews, J.; McIlhany, K.; Meitanis, N.; Milner, R.; Rapaport, J.; Redwine, R.; Seely, J.; Shinozaki, Ayako; Širca, S.; Sindile, A.; Six, E.; Smith, T.; Steadman, M.; Tonguç, Barış Tamer; Tschalaer, C.; Tsentalovich, E.; Turchinetz, W.; Xiao, Yong; Xü, Wei-Jiang; Zhang, Cheng; Zhou, Zhengfang; Zwart, T.

doi:10.1103/physrevlett.101.042501

Cited by 68 publications

(61 citation statements)

References 29 publications

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“…In that model only the polarization data of Refs. [52,53] were fitted, but not the more recent low-Q 2 BLAST data [54] nor the preliminary higher-Q 2 JLab data [55]. Nevertheless, the 2005 fit agrees very well with the BLAST results and with the preliminary data (not shown).…”

Section: Results In Momentum Space Andsupporting

confidence: 75%

“…2 [41,54]. These new data do not confirm possible "bump" structures near 0.2 (GeV/c) 2 suggested by earlier measurements, and the invocation of a phenomenological pion cloud [78] is not required.…”

Section: (Gev/c)mentioning

confidence: 33%

“…As seen in [26] and the Galster et al [27] parametrization with the fitted data (Madey et al [52] and Warren et al [53]; see the end of Sec. II) and recent results from BLAST (Geis et al [54]). …”

Section: Results In Momentum Space Andmentioning

confidence: 99%

“…Earlier work presented in the DOE/NSF NSAC Long Range Plan [89] was based on the data and parametrization used in Refs. [41,54]. For the proton, this was the six-parameter phenomenological fit function of Ref.…”

Section: B Results In Coordinate Spacementioning

confidence: 99%

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Role of mesons in the electromagnetic form factors of the nucleon

Crawford

Akdoğan

Alarcón³

et al. 2010

Phys. Rev. C

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The roles played by mesons in the electromagnetic form factors of the nucleon are explored using as a basis a model containing vector mesons with coupling to the continuum together with the asymptotic Q 2 behavior of perturbative QCD. Specifically, the vector dominance model (GKex) developed by E. L. Lomon is employed, as it is known to be very successful in representing the existing high-quality data published to date. An analysis is made of the experimental uncertainties present when the differences between the GKex model and the data are expanded in orthonormal basis functions. A main motivation for the present study is to provide insight into how the various ingredients in this model yield the measured behavior, including discussions of when dipole form factors are to be expected or not, of which mesons are the major contributors, for instance, at low Q 2 or large distances, and of what effects are predicted from coupling to the continuum. Such insights are first discussed in momentum space, followed by an analysis of how different and potentially useful information emerges when both the experimental and theoretical electric form factors are Fourier transformed to coordinate space. While these Fourier transforms should not be interpreted as "charge distributions," nevertheless the roles played by the various mesons, especially those which are dominant at large or small distance scales, can be explored via such experiment-theory comparisons.

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Section: Results In Momentum Space Andsupporting

confidence: 75%

Section: (Gev/c)mentioning

confidence: 33%

Section: Results In Momentum Space Andmentioning

confidence: 99%

Section: B Results In Coordinate Spacementioning

confidence: 99%

See 2 more Smart Citations

Role of mesons in the electromagnetic form factors of the nucleon

Crawford

Akdoğan

Alarcón³

et al. 2010

Phys. Rev. C

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“…the electron scattering off light nuclei (deuteron [90], helium [91]). Since the complexity of nuclear target, getting nucleon form-factors is more demanding than in the case of the elastic ep scattering.…”

Section: Jhep09(2010)053mentioning

confidence: 99%

Neural network parameterizations of electromagnetic nucleon form-factors

Graczyk

Płoński

Sulej

2010

J. High Energ. Phys.

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Abstract:The electromagnetic nucleon form-factors data are studied with artificial feed forward neural networks. As a result the unbiased model-independent form-factor parametrizations are evaluated together with uncertainties. The Bayesian approach for the neural networks is adapted for χ 2 error-like function and applied to the data analysis. The sequence of the feed forward neural networks with one hidden layer of units is considered. The given neural network represents a particular form-factor parametrization. The so-called evidence (the measure of how much the data favor given statistical model) is computed with the Bayesian framework and it is used to determine the best form factor parametrization.

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Elastic form factor experiments: a serial story

Köhl¹

2011

Pavi09

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Charge Form Factor of the Neutron at Low Momentum Transfer from theH→2(e→,e′

Cited by 68 publications

References 29 publications

Role of mesons in the electromagnetic form factors of the nucleon

Role of mesons in the electromagnetic form factors of the nucleon

Neural network parameterizations of electromagnetic nucleon form-factors

Elastic form factor experiments: a serial story

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