SpinQuest/E1039 Status

The SpinQuest/E1039 experiment is being conducted at the Fermi National Accelerator Laboratory and aims to pioneer the measurement of the Sivers function for sea quarks using the Drell-Yan process. By using the Drell-Yan process in proton-proton scattering and observing transverse single spin asymmetry, the experiment seeks to provide the evidence for the presence of orbital angular momentum in light antiquarks within the nucleon. The experiment employs a 120-GeV extracted proton beam colliding with transversely-polarized NH₃ and ND₃ cryogenic targets, and a spectrometer that detects pairs of positive and negative muons from Drell-Yan production on polarized nucleons. This will allow a measurement of the transverse single spin asymmetry for a number of physics processes, including J/ψ and Drell-Yan production. This talk will provide an overview of the SpinQuest experiment, explain its physics objectives, and provide insights into its current progress.