Conveners
Scattering and Electrons
- Yue Zhang
The A2 Collaboration uses the Mainz Microtron to conduct measurements probing hadron structure. An upcoming experiment will study Compton scattering off of helium-3 to obtain the polarizabilties of the neutron. To get a full picture of these events and reduce backgrounds, an active target is required. We intend to use a compact Time Projection Chamber (TPC) for this purpose, in combination...
The parity-violating electron scattering technique can be used to probe new physics beyond the Standard Model. High precision measurements of the parity-violating asymmetry with a variety of kinematics and targets enable scientific reach in particle physics, nuclear physics, and hadronic physics. To achieve precise measurements, experimental corrections to the measured asymmetries are...
We perform Next-to-the Leading Order (NLO) and quadratic level (NNLO) covariant approach to get the leptonic tensor for a general QED scattering process with a distinguishable target particle. The Feynman diagram of the scattering process in question is divided into upper (leptonic) and lower (either leptonic or hadronic) parts. The QED quadratic leptonic tensor is of the order of $\alpha^3$...
The planned Jefferson Lab Eta Factory (JEF) experiment relies on the construction of an updated electromagnetic calorimeter in the forward region of the GlueX detector in Hall D, to detect photons from eta and eta’ meson rare neutral decays. Focus on these decay channels is motivated by the search for signatures beyond the Standard Model, probing portals that couple the SM sector to the dark...
Studies of the exclusive production of the $\eta$ meson in photonuclear reactions offer a wide range of physics insight. These include constraining models of hadron photoproduction, insight into the spectrum of excited N* states, and may even provide a probe into the structure of the nucleon at wide-angles of production. GlueX, a high-intensity photoproduction experiment located at Hall D of...
The basic structure of quantum field theory that is used to describe the Standard Model of fundamental interactions of nature is usually formulated for zero temperature. However, the effects of temperature are extremely important for understanding a number of physical processes such as the electroweak phase transition and quark-gluon plasma.
The extension of quantum field theory to non-zero...
