Toward a Dijet Measurement at Forward Rapidity Utilizing the STAR Endcap Electromagnetic Calorimeter

To date, the STAR experiment at the Relativistic Heavy Ion Collider has probed the gluon helicity distribution of the proton, $\Delta g(x)$, primarily through inclusive channels. These inclusive measurements have resulted in a strong constraint on the integral of $\Delta g(x)$ over the Bjorken-$x$ range of $0.03$ to $0.3$; however, they have little sensitivity to the the shape of $\Delta g(x)$ as a function of $x$. In contrast, dijet measurements give sensitivity to partonic kinematics and thus allow for the investigation of the $x$ dependence of $\Delta g(x)$. The study of dijets at forward rapidity in STAR is complicated by the falling charged particle tracking efficiency of the Time Projection Chamber for $|\eta| > 1$, as well as a gap in electromagnetic calorimeter coverage for $1.0<\eta<1.086$. To study dijets at forward rapidity, and thus gain access to lower partonic $x$ values, it will therefore be necessary to have a detailed understanding of systematic changes in reconstructed jet properties as one moves into the Endcap region $(1.086 < \eta < 2)$. The status of studies investigating these systematic changes will be presented.