Year: 2025
Type: conference-paper
Abstract: There is a pressing need for experimental measurements capable of testing chiral perturbation theory and other long distance effective theories. One of the most valuable quantities for performing low $𝑄^2$ comparisons between experiment and theory is that of the nucleon spin structure function. The spin structure functions $𝑔_1$ and $𝑔_2$ enable direct tests of effective theories of QCD through their moments, and a series of sum rules involving their integration. The Thomas Jefferson National Accelerator (JLab) in Newport News, VA, USA, has hosted a highly successful and ongoing program to measure these quantities over a broad kinematic range. In particular, the last few years have produced newly published JLab results measuring these spin structure functions at low $𝑄^2$ for both the proton and the neutron. In this proceedings, these recent low $𝑄^2$ spin structure results are summarized, along with prospects for future measurements.
DOI: 10.22323/1.479.0027
Author: David Ruth
Institution: University of New Hampshire
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4409291970