Generalized parton distributions from nucleon form factor data
نویسندگان
چکیده
منابع مشابه
Generalized parton distributions from nucleon form factor data
We present a simple empirical parameterization of the x-and t-dependence of generalized parton distributions at zero skewness, using forward parton distributions as input. A fit to experimental data for the Dirac, Pauli and axial form factors of the nucleon allows us to discuss quantitatively the interplay between longitudinal and transverse partonic degrees of freedom in the nucleon (" nucleon...
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 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 کاملGeneralized Parton Distributions from Form Factors *
The electromagnetic nucleon form factors provide constraints on generalized quark distributions. Key results of the study presented here are a strong dependence of the average impact parameter of quarks on their longitudinal momentum fraction, a striking difference in the t dependence of u and d quark contributions to elastic form factors, and an estimate of the orbital angular momentum carried...
متن کاملNucleon Structure and Generalized Parton Distributions
This paper discusses a selected part of the experimental program dedicated to the study of Generalized Parton Distributions, a recently introduced concept which provides a comprehensive framework for investigations of the partonic structure of the nucleon. Particular emphasis is put on the Deeply Virtual Compton Scattering program performed at the Jefferson Laboratory. The short and long term f...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2005
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s2004-02063-4