Measurement of Transverse Single-Spin Asymmetries from Elastic Electron Scattering on $^{27}$Al and $^{12}$C

The Qweak experiment will determine the weak charge of the proton through a measurement of the parity-violating electron-proton helicity asymmetry by scattering electrons with longitudinal polarization from a liquid hydrogen target. During the running of the experiment additional data was recorded from $^{27}$Al and $^{12}$C targets for the purpose of determining background contributions. A small subsection of this aluminum and carbon data were taken with transversely polarized electrons for determining the effect of any remaining small transverse polarization component contributing to the parity-violating longitudinal asymmetry in the main experiment. This transverse aluminum data would lead to the first determination of the beam-normal single-spin asymmetry (BNSSA) on $^{27}$Al, which would help understand an observed anomaly of a near zero BNSSA for $^{208}$Pb by the PREX experiment [S. Abrahamyan, et al., Phys. Rev. Lett. 109(2012)192501]. I will present the status of our effort toward extracting the BNSSA from Qweak's $^{27}$Al and $^{12}$C data as well as the possible impact it will have on the current explanation of the $^{208}$Pb result from the PREX experiment.