Studies on Light Quark Flavor Asymmetry in the Nucleon Sea at SeaQuest Experiment

The Fermilab E906/SeaQuest is an experiment aimed at studying the anti-quark distributions in nucleons and nuclei. The experiment uses a 120 GeV proton beam extracted from the Main Injector at Fermilab. SeaQuest takes advantage of the Drell-Yan process to probe the anti-quark structure in the proton. In the Drell-Yan process, quark from one hadron annihilates with an anti-quark from another hadron, producing a virtual photon which eventually decays into dileptons. The SeaQuest forward spectrometer is designed to detect such dimuons generated by the Drell-Yan process. Ratio of cross-sections of the interaction of proton beam on liquid deuterium and hydrogen targets allows SeaQuest to map out $\overline{d}(x)/overline{u}(x)$ up to a region of ~0.45 in Bjorken-x, a region which hasn't been explored yet. Recent progress on the analysis will be presented in this talk.