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Related papers: Dispersion Relation for the Nucleon Electromagneti…

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Electromagnetic properties of the nucleon are explored with lattice QCD using a novel technique. Focusing on background electric fields, we show how the electric polarizability can be extracted from nucleon correlation functions. A crucial…

High Energy Physics - Lattice · Physics 2011-01-27 William Detmold , Brian C. Tiburzi , Andre Walker-Loud

We investigate the possible modifications of the nucleons' electromagnetic form factors in the framework of a modified Skyrme model allowing for nucleon deformation and using realistic nuclear mass distributions. We show that such effects…

Nuclear Theory · Physics 2007-05-23 Ulughbek T. Yakhshiev , Ulf-G. Meißner , Andreas Wirzba

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.…

Magnetic form factors corresponding to elastic electron scattering from odd-A nuclei are presented. The calculations are carried out in plane-wave Born approximation. The one-body properties are obtained in a deformed self-consistent…

There is a long-standing discrepancy between different measurements of the electric and magnetic radii of the proton. Lattice QCD calculations are a well-suited tool for theoretical investigations of the structure of the nucleon from first…

High Energy Physics - Lattice · Physics 2024-05-24 Dalibor Djukanovic , Georg von Hippel , Harvey B. Meyer , Konstantin Ottnad , Miguel Salg , Hartmut Wittig

We investigate the nonmonotonic behavior observed in the time-like nucleon electromagnetic form factors. Using a phenomenological extending vector meson dominance model, where the ground states $\rho$ and $\omega$ and their excited states…

Nuclear Theory · Physics 2024-03-01 Bing Yan , Cheng Chen , Xia Li , Ju-Jun Xie

We report the calculation of electromagnetic form factors of nucleons within a relativistic three-quark model with Gaussian shape for the nucleon-quark vertex. The allowed region for two adjustable parameters, the range parameter…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. A. Ivanov , M. P. Locher , V. E. Lyubovitskij

The proton's elastic electromagnetic form factors are calculated using an Ansatz for the nucleon's Poincare' covariant Faddeev amplitude that only retains scalar diquark correlations. A spectator approximation is employed for the current.…

Nuclear Theory · Physics 2009-01-14 J. C. R. Bloch , A. Krassnigg , C. D. Roberts

This paper calculates the elastic form factors for nucleons based on generalized parton distributions using an extended new ansatz introduced in http://dx.doi.org/10.1103/PhysRevC.105.025202 (Phys. Rev. C 105, no.2, 025202 (2022)).…

High Energy Physics - Phenomenology · Physics 2023-06-06 Hossein Vaziri , Mohammad Reza Shojaei

Nucleon electromagnetic form factors are studied in the cloudy bag model (CBM) with center-of-mass and recoil corrections. This is the first presentation of a full set of nucleon form factors using the CBM. The center of mass motion is…

Nuclear Theory · Physics 2008-11-26 D. H. Lu , A. W. Thomas , A. G. Williams

The electromagnetic form factors of nucleons are calculated using an AdS/QCD model by considering a Dirac field coupled to a vector field in the 5-dimensional AdS space. We also calculate a gravitational or energy-momentum form factor by…

High Energy Physics - Phenomenology · Physics 2009-06-30 Zainul Abidin , Carl E. Carlson

The reaction of the elastic electron-deuteron scattering at high momentum transfer is investigated within the Bethe-Salpeter approach. The relativistic covariant Graz II separable kernel of nucleon-nucleon interactions is used to analyze…

Nuclear Theory · Physics 2015-06-19 A. V. Bekzhanov , S. G. Bondarenko , V. V. Burov

Elastic scattering of relativistic electrons from the nucleon yields Lorentz invariant form factors that describe the fundamental distribution of charge and magnetism. The spatial dependence of the nucleon's charge and magnetism is…

Nuclear Experiment · Physics 2016-06-28 T. W. Donnelly , D. K. Hasell , R. G. Milner

The electromagnetic form factors provide important insight into the internal structure of the nucleon and continue to be of major interest for experiment and phenomenology. For an intermediate range of momenta the form factors can be…

We study the nucleon electromagnetic form factors in a quark-gluon core model framework, which can be viewed as an extension of the Isgur-Karl model of baryons. Using this picture we derive nucleon electromagnetic dipole form factors at low…

High Energy Physics - Phenomenology · Physics 2009-12-04 Xian-Qiao Yu

We review the status of baryon form factors with a special focus on the nucleon electromagnetic form factors which are known best. First, we give an introduction into the dispersive analyses and emphasize the role of unitarity and…

High Energy Physics - Phenomenology · Physics 2024-12-23 Yong-Hui Lin , Hans-Werner Hammer , Ulf-G. Meißner

We present the recent high-statistics calculations of the nucleon electromagnetic form factors with fully dynamical domain wall fermions on the 32^3x64 lattices generated by the RBC and UKQCD collaborations, with pion masses at roughly 297…

High Energy Physics - Lattice · Physics 2010-02-19 M. F. Lin , J. D. Bratt , M. Engelhardt , Ph. Hagler , T. R. Hemmert , H. B. Meyer , J. W. Negele , A. V. Pochinsky , M. Procura , W. Schroers , S. Syritsyn

The electromagnetic form factors of the proton are obtained using a particular realization of QCD in the large $N_c$ limit (${QCD}_{\infty}$), which sums up the infinite number of zero-width resonances to yield an Euler's Beta function…

High Energy Physics - Phenomenology · Physics 2010-02-03 C. A. Dominguez , T. Thapedi

We study nucleon-to-delta electromagnetic transition form factors and relations between them within the framework of holographic dual model of QCD proposed by Sakai and Sugimoto. In this setup, baryons appear as topological solitons of the…

High Energy Physics - Phenomenology · Physics 2009-09-08 Hovhannes R. Grigoryan , T. -S. H. Lee , Ho-Ung Yee

In-medium nucleon electromagnetic form factors are calculated in the quark meson coupling model. The form factors are typically found to be suppressed as the density increases. For example, at normal nuclear density and $Q^2 \sim 0.3 {…

Nuclear Theory · Physics 2008-11-26 D. H. Lu , A. W. Thomas , K. Tsushima , A. G. Williams , K. Saito
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