Abstract
In this paper, we present a detailed study of the unpolarized nucleon parton distribution function (PDF) employing the approach of parton pseudo-distribution func- tions. We perform a systematic analysis using three lattice ensembles at two volumes, with lattice spacings a = 0.127 fm and a = 0.094 fm, for a pion mass of roughly 400 MeV. With two lattice spacings and two volumes, both continuum limit and infinite volume ex- trapolation systematic errors of the PDF are considered. In addition to the x dependence of the PDF, we compute their first two moments and compare them with the pertinent phenomenological determinations.
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Joó, B., Karpie, J., Orginos, K. et al. Parton distribution functions from Ioffe time pseudo-distributions. J. High Energ. Phys. 2019, 81 (2019). https://doi.org/10.1007/JHEP12(2019)081
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DOI: https://doi.org/10.1007/JHEP12(2019)081