Work

Modeling nucleon generalized parton distributions

Year: 2013

Type: article

Abstract: We discuss building models for nucleon generalized parton distributions $H$ and $E$ that are based on the formalism of double distributions (DDs). We found that the usual ``$\mathrm{DD}+\mathrm{D}$-term'' construction should be amended by an extra term, $\ensuremath{\xi}{E}_{+}^{1}(x,\ensuremath{\xi})$ built from the $\ensuremath{\alpha}/\ensuremath{\beta}$ moment of the DD $e(\ensuremath{\beta},\ensuremath{\alpha})$ that generates generalized parton distribution $E(x,\ensuremath{\xi})$. Unlike the $D$ term, this function has support in the whole $\ensuremath{-}1\ensuremath{\le}x\ensuremath{\le}1$ region, and in general does not vanish at the border points $|x|=\ensuremath{\xi}$.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.87.096017

Author: A. V. Radyushkin

Institutions: Thomas Jefferson National Accelerator Facility, Joint Institute for Nuclear Research, Old Dominion University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: U.S. Department of Energy

Awards: G1728142190, G2263355576, G2988778103