Drell-Yan and charmonium production in p+p and p+d interactions at 120 GeV from the SeaQuest experiment

High-mass dimuon production in p + p and p + d interactions has been measured in the SeaQuest experiment with the 120 GeV proton beam at Fermilab. The first result of the Drell-Yan (p+d)/2(p+p) cross section ratio, based on the analysis of a fraction of the collected data, has provided new information on the light sea quark asymmetry. Analysis of the entire data set to extract the d̄/ū ratio is currently underway, and the status of this analysis will be reported. In addition to the Drell-Yan process, SeaQuest has also collected J/Ψ and Ψ’ production data, which are sensitive to the gluon distributions in the nucleons and provide information complementary to that of the Drell-Yan data. The status of the charmonium analysis will also be discussed.