27–30 Mar 2023
Lawrence Berkeley National Lab
US/Pacific timezone

QED radiative corrections for accelerator neutrinos

27 Mar 2023, 09:45
20m
Room 310, Building 91 (Lawrence Berkeley National Lab)

Room 310, Building 91

Lawrence Berkeley National Lab

Speaker

Dr Oleksandr Tomalak (Los Alamos National Laboratory)

Description

Charged-current quasielastic neutrino scattering is the signal process in neutrino oscillation experiments and requires precise theoretical prediction for the analysis of modern and future experimental data. We formulate radiative corrections in a soft-collinear effective field theory framework, evaluate soft and collinear contributions analytically in QED, provide a hadronic model for ``hard" contributions, present the resulting scattering cross sections and contrast them with experimental data. We validate the precise relation between electron and muon neutrino cross sections for the experimental setup of modern and future accelerator-based neutrino oscillation experiments. The exchange of photons with nuclear medium modifies (anti)neutrino and electron scattering cross sections. We study the distortion of (anti)neutrino-nucleus and charged lepton-nucleus cross sections and estimate the QED-medium effects. We find new permille-to-percent level effects, which were never accounted for in either (anti)neutrino-nucleus or electron-nucleus scattering.

Primary author

Dr Oleksandr Tomalak (Los Alamos National Laboratory)

Presentation materials