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arXiv · 1602.06027

Form Factors and Generalized Parton Distributions in Basis Light-Front Quantization

Lekha Adhikari·Yang Li·Xingbo Zhao·Pieter Maris·James P. Vary·Alaa Abd El-Hady
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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 ($e \bar{e}$), using Basis Light-Front Quantization (BLFQ). Using this approach, we also calculate the impact-parameter dependent GPDs $q(x, {\vec b_\perp})$ to visualize the fermion density in the transverse plane (${\vec b_\perp}$). We compare selected results with corresponding quantities in the non-relativistic 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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Lekha Adhikari, Yang Li, Xingbo Zhao, Pieter Maris, James P. Vary, Alaa Abd El-Hady. 2016-02-19. Form Factors and Generalized Parton Distributions in Basis Light-Front Quantization. https://doi.org/10.1103/physrevc.93.055202

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