Dijet Longitudinal Double Spin Asymmetry at $\sqrt s = 510$ GeV in $\vec{p}\vec{p}$ collisions at STAR

The production of jets in $\vec{p}\vec{p}$ collisions at STAR is dominated by quark-gluon and gluon-gluon scattering processes. The dijet longitudinal double spin asymmetry $(A_{LL})$ is sensitive to the polarized parton distributions and may be used to extract information about the intrinsic gluon spin contribution $(\Delta G)$ to the spin of the proton. The measurement of dijet $A_{LL}$ at $\sqrt s = 510$ GeV will extend the current constraints on $\Delta G$ to a lower gluon momentum fraction and allow for reconstruction of the partonic kinematics at leading order. A status report on the present work towards the dijet $A_{LL}$ measurement from $\sim80 pb^{-1}$ of $\sim53\%$ polarized proton data at $\sqrt s = 510$ GeV taken during the 2012 RHIC run will be given.