Quark helicity distributions play a crucial role in our understanding of quantum chromodynamics (QCD) and the strong force, as well as in the study of nucleon structure. An energy upgrade of the electron beam at Jefferson Lab (JLab) from 11 to 22 GeV would provide a unique opportunity to advance our understanding of quark helicity distributions, allowing for nucleons to be probed at higher Bjorken x ($x_{Bj}$) than ever before. % using the high luminosity beam.
We present here an exploratory study of the impact such an upgrade would bring to our knowledge of the nucleon spin structure and quark helicity distributions through measurements of the virtual photon asymmetries $A_1^n$ and $A_1^p$ up to $x_{Bj}\approx0.90$.
Exploring Quark Helicity Distributions with a 22 GeV Beam at Jefferson Lab
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Published on:
July 30, 2024
Abstract
DOI: https://doi.org/10.22323/1.456.0159
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.