Precision Measurement of the Neutron $d_{2}$: A Probe of the Color Force

The $g_2$ nucleon spin-dependent structure function measured in electron deep inelastic scattering contains information beyond the simple parton model description of the nucleon. It provides insight into quark-gluon correlations and a path to access the confining local color force a struck quark experiences just as it is hit by the virtual photon due to the remnant di-quark. The quantity $d_2$, a measure of this local color force, has its information encoded in an $x^2$ weighted integral of a linear combination of spin structure functions $g_1$ and $g_2$ and thus is dominated by the valence-quark region at large momentum fraction $x$. To date, theoretical calculations and experimental measurements of the neutron $d_2$ differ by about two standard deviations. Therefore, JLab experiment E06-014, performed in Hall A, made a precision measurement of this quantity. Double spin asymmetries and absolute cross-sections were measured in both DIS and resonance regions by scattering longitudinally polarized electrons at beam energies of 4.74 and 5.89 GeV from a longitudinally and transversely polarized $^3$He target. Results for the absolute cross-sections and spin structure functions on $^3$He will be presented as well as results for the neutron $d_2$.