Speaker
Axel Schmidt
(George Washington University)
Description
One of the future upgrade scenarios proposed for Jefferson Lab is the addition of a positron beam capabilities. Positron scattering from hadronic targets can provide new information that cannot be accessed from electron scattering alone. Asymmetries between electron- and positron-scattering can isolate interference effects, such as those between deeply virtual Compton scattering and the Bethe-Heitler process, as well as the leading contribution from two-photon exchange. Furthermore, positron annihilation reactions allow novel searches for light dark matter. I will review these and other motivations for a positron beam and discuss the Jefferson Lab's Positron Working Group's efforts to make this upgrade a reality.
Primary author
Axel Schmidt
(George Washington University)
