Single and Double Spin Asymmetry Measurements in Semi-Inclusive DIS on Polarized $^3$He.

Vincent Sulkosky & Kalyan Allada
Jefferson Lab experiment E06-010 measured the target-single spin (SSA) and double spin asymmetries (DSA) in semi-inclusive deep inelastic $^{3}\rm He^{\uparrow}(e,e'\pi^{\pm})X$ reactions on a polarized $^3\rm He$ target. The measured asymmetry ($A_{\mathrm{UT}}$) is sensitive to the nucleon ttransversity and Sivers distribution functions, whereas the measured $A_{LT}$ asymmetry is related to the transverse momentum dependent PDF $g_{1T}$. The kinematics were chosen to be in the valence quark region with $x \sim$ 0.16-0.35 and $Q^2 \sim$ \unit{1.4-2.7}{\squaren{(\GeVoverc)}}. The...