Reconstruction of light-cone parton distribution functions from lattice QCD simulations at the physical point
High Energy Physics - Lattice
2018-09-19 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We present the unpolarized and helicity parton distribution functions calculated within lattice QCD simulations using physical values of the light quark mass. Non-perturbative renormalization is employed and the lattice data are converted to the MSbar-scheme at a scale of 2 GeV. A matching process is applied together with target mass corrections leading to the reconstruction of light-cone parton distribution functions. For both cases we find a similar behavior between the lattice and phenomenological data, and for the polarized PDF a nice overlap for a range of Bjorken-x values. This presents a major success for the emerging field of direct calculations of quark distributions using lattice QCD.
Keywords
Cite
@article{arxiv.1803.02685,
title = {Reconstruction of light-cone parton distribution functions from lattice QCD simulations at the physical point},
author = {Constantia Alexandrou and Krzysztof Cichy and Martha Constantinou and Karl Jansen and Aurora Scapellato and Fernanda Steffens},
journal= {arXiv preprint arXiv:1803.02685},
year = {2018}
}
Comments
6 pages, 6 figures, 1 table