Ivan Vitev

Apr 25, 2024 | link.aps.org | Oleksandr Tomalak |Los Alamos |Ivan Vitev

Interactions of charged leptons with nuclei and the naive tree-level kinematics of these processes are affected by radiation of photons induced by the QED nuclear medium. We evaluate cross section modifications at leading orders of the number of correlated interactions inside the nucleus, known as the opacity expansion. We derive results for soft and collinear types of the bremsstrahlung at the first three orders in opacity and generalize them to higher orders.

Nov 13, 2023 | link.aps.org | Oleksandr Tomalak |Los Alamos |Ivan Vitev

Proper interpretation of past, current, and future data on lepton-nucleus reactions requires a clear separation between quantum electrodynamics and strong interaction effects inside the nucleus. First studies of QED in-medium lepton dynamics have set a theoretical framework to derive electron-nucleus and (anti)neutrino-nucleus cross section corrections. We employ this approach to quantitatively compute the effects of Glauber photon-mediated multiple rescattering within the nuclear medium.