منابع مشابه
Nucleon and Pion-nucleon Form Factors from Lattice Qcd
The isovector Nucleon electromagnetic form factors GE(q ) and GM(q ) are evaluated in Lattice QCD using Wilson fermions. A lattice of spatial extent 3 fm is used in the quenched theory allowing the extraction of the form factors for momentum transfer squared between 0.1 and 2 GeV for lowest pion mass of about 400 MeV. The calculation is also performed using two degenerate dynamical flavors of W...
متن کاملNucleon Form Factors from Generalized Parton Distributions
M. Guidal,1 M. V. Polyakov,2, 3 A. V. Radyushkin,4, 5, 6 and M. Vanderhaeghen5, 7 Institut de Physique Nucléaire Orsay, F-91406 Orsay, France Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188300, Russia Université de Liège au Sart Tilman, B-4000 Liège 1 Belgium Physics Department, Old Dominion University, Norfolk, VA 23529, USA Thomas Jefferson National Accelerator Facility, Ne...
متن کاملNucleon electromagnetic form factors from lattice QCD
It is imperative that lattice QCD serve to develop our understanding of hadron structure and, where possible, to guide the interpretation of experimental data. There is now a great deal of effort directed at the calculation of the electroweak form factors of the nucleon, where for example, measurements at Jefferson Laboratory have recently revealed surprising behaviour in the ratio GE/GM. While...
متن کاملGeneralized parton distributions from nucleon form factors
Results from a recent analysis of the zero-skewness generalized parton distributions (GPDs) for valence quarks are reviewed. The analysis bases on a physically motivated parameterization of the GPDs with a few free parameters adjusted to the nucleon form factor data. The Fourier transforms of the GPDs representing quark densities in the impact parameter plane, as well as moments of the GPDs are...
متن کاملNucleon electromagnetic form factors
Elastic electromagnetic nucleon form factors have long provided vital information about the structure and composition of these most basic elements of nuclear physics. The form factors are a measurable and physical manifestation of the nature of the nucleons’ constituents and the dynamics that binds them together. Accurate form factor data obtained in recent years using modern experimental facil...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2009
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2009.04.004