Work

Form factors and generalized parton distributions in basis light-front quantization

Year: 2016

Type: article

Abstract: We calculate the elastic form factors and the generalized parton distributions (GPDs) for four low-lying bound states of a demonstration fermion-antifermion system, strong-coupling positronium ($e\overline{e}$), using basis light-front quantization (BLFQ). By using this approach, we also calculate the impact-parameter-dependent GPDs $q(x,{\stackrel{P\vec}{b}}_{\ensuremath{\perp}})$ to visualize the fermion density in the transverse plane (${\stackrel{P\vec}{b}}_{\ensuremath{\perp}}$). We compare selected results with corresponding quantities in the nonrelativistic limit to reveal relativistic effects. Our results establish the foundation within BLFQ for investigating the form factors and the GPDs for hadronic systems.

Source: Physical Review C

DOI: 10.1103/physrevc.93.055202

Authors: Lekha Adhikari, Yang Li, Xingbo Zhao, Pieter Maris, James P. Vary, Alaa Abd El-Hady

Institutions: Iowa State University, Chinese Academy of Sciences, Institute of Modern Physics, Zagazig 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: green

Funders: U.S. Department of Energy, Chinese Academy of Sciences

Awards: G42916606, INTERMEDIATE/HIGH ENERGY NUCLEAR PHYSICS, NUCLEI (NUCLEAR COMPUTATIONAL LOW-ENERGY INITIATIVE)