E12-10-006: An update to PR12-09-014: Target Single Spin Asymmetry in Semi-Inclusive Deep-Inelastic (e, e′π±) Reaction on a Transversely Polarized 3He Target at 8.8 and 11 GeV.

Abstract

We propose to carry out precision measurements of Single target Spin Asymmetries (SSA) from semi-inclusive electroproduction of charged pions from a 40-cm long transversely polarized 3He target in Deep-Inelastic-Scattering kinematics using 11 and 8.8 GeV electron beams. We propose to carry out this coincidence experiment in Hall A with a newly proposed solenoid spectrometer (SoLID) and the Hall A polarized 3He target. The full 2π azimuthal angular coverage on the φS angle and large azimuthal angular coverage on the φh angle are essential in controlling the systematic uncertainties in extracting different asymmetries. The proposed experiment will provide precise 4-D (x, z, PT and Q2) data on the Collins, Sivers and Pretzelosity asymmetries for the neutron through the azimuthal angular dependence