First analysis of world polarized DIS data with small-$x$ helicity evolution
Abstract
We present a Monte Carlo based analysis of the combined world data on polarized lepton-nucleon deep-inelastic scattering at small Bjorken within the polarized quark dipole formalism. We show for the first time that double-spin asymmetries at can be successfully described using only small- evolution derived from first-principles QCD, allowing predictions to be made for the structure function at much smaller . Anticipating future data from the Electron-Ion Collider, we assess the impact of electromagnetic and parity-violating polarization asymmetries on and demonstrate an extraction of the individual flavor helicity PDFs at small .
Keywords
Cite
@article{arxiv.2102.06159,
title = {First analysis of world polarized DIS data with small-$x$ helicity evolution},
author = {Daniel Adamiak and Yuri V. Kovchegov and W. Melnitchouk and Daniel Pitonyak and Nobuo Sato and Matthew D. Sievert},
journal= {arXiv preprint arXiv:2102.06159},
year = {2021}
}
Comments
7 pages, 5 figures; v2: Discussion extended, typos corrected, data set expanded, figure added. To appear in Phys. Rev. D