The electron in three-dimensional momentum space
Abstract
We study the electron as a system composed by an electron and a photon, using lowest order perturbation theory. We derive the leading-twist transverse-momentum-dependent distribution functions for both the electron and photon in the dressed electron, thereby offering a three-dimensional description of the dressed electron in momentum space. To obtain the distribution functions, we apply both the formalism of light-front wave function overlap representation and the diagrammatic approach. We perform the calculations both in light-cone gauge and Feynman gauge, and we present a detailed discussion of the role of the Wilson lines to obtain gauge-independent results. We provide numerical results and plots for many of the computed distributions.
Cite
@article{arxiv.1508.06964,
title = {The electron in three-dimensional momentum space},
author = {Alessandro Bacchetta and Luca Mantovani and Barbara Pasquini},
journal= {arXiv preprint arXiv:1508.06964},
year = {2016}
}
Comments
25 pages, 14 figures