Speaker
Description
A significant open question is how to bridge two disparate regimes of QCD: the high $Q^2$ regime, where perturbative QCD describes the behavior of quarks and gluons very well, and the low $Q^2$ regime, where effective theories such as Chiral Perturbation Theory are most successful at describing partonic structure. One way to study the transition between these regions is with the use of nucleon spin structure functions, which describe hadron spin structure and the moments of which can be directly compared to theoretical predictions. In this talk, I will discuss an experiment which has been recently conditionally approved for running in Jefferson Lab's Hall C, which will measure the g2 spin structure function of the proton in this transition region for the first time, filling in the last significant gap in world data coverage for this quantity for either nucleon, and enabling novel tests of Lattice QCD and other theories which can bridge the low and high $Q^2$ worlds.
