Spin Structure Program at Jefferson Lab

Abstract

High performance polarized beam and targets at JLab enabled an extensive program to measure nucleon spin structure functions with high precision. This talk will highlight the recent JLab spin experiments, including the measurement of the neutron spin asymmetry (A1n) in the valance quark (high-x) region and the measurement of the neutron spin moment d2 in medium-high Q2 region to study quark-gluon correlations. Recent results on spin moments at low Q2 (spin sum rules and spin polarizabilities) for both the proton and neutron will also be presented