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

Lekha Adhikari, Yang Li, Xingbo Zhao, Pieter Maris, James P. Vary, and Alaa Abd El-Hady
Phys. Rev. C 93, 055202 – Published 11 May 2016

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 (ee¯), using basis light-front quantization (BLFQ). By using this approach, we also calculate the impact-parameter-dependent GPDs q(x,b) to visualize the fermion density in the transverse plane (b). 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.

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  • Received 22 February 2016

DOI:https://doi.org/10.1103/PhysRevC.93.055202

©2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Particles & Fields

Authors & Affiliations

Lekha Adhikari1,*, Yang Li1,†, Xingbo Zhao2,‡, Pieter Maris1,§, James P. Vary1,∥, and Alaa Abd El-Hady3,¶

  • 1Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
  • 2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 3Physics Department, Zagazig University, Zagazig 44519, Egypt

  • *adhikari@iastate.edu
  • leeyoung@iastate.edu
  • xbzhao@impcas.ac.cn
  • §pmaris@iastate.edu
  • jvary@iastate.edu
  • alaa_abdelhady@yahoo.com

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Issue

Vol. 93, Iss. 5 — May 2016

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