CJ22 global analysis of parton distribution functions

We present the new CJ22 global QCD analysis of parton distribution functions which include new electroweak data from SeaQuest and STAR. The new lepton pair production data from SeaQuest, in particular, provides strong constraints on the dbar/ubar ratio with the extended large-x coverage (x < 0.45), allowing more flexible light-antiquark parameterization than the previous CJ15 analysis. The W boson production in p+p from STAR offers additional constraints on the light antiquarks in the intermediate x region (x < 0.2). The new data are also sensitive to d/u ratio and allow us to explore the correlation between d/u and dbar/ubar. We find that the d/u ratio is smaller than the previously reported value in CJ15, and extrapolates to near 0 as x -> 1 in CJ22.