Status of proton radius puzzle and QED radiative corrections for accelerator neutrinos

by Oleksandr Sergijovic Tomalak (LANL)

Tuesday 11 Apr 2023, 16:00 → 17:30 Asia/Seoul

1423 in building 1 (KIAS)

Title: Status of proton radius puzzle and QED radiative corrections for accelerator neutrinos

Speaker: Oleksandr Sergijovic Tomalak (LANL) 

Abstract: The first measurement of the proton charge radius from the Lamb shift of energy levels in muonic hydrogen gave us 20 times more precise determination and a discrepancy with the, until then, accepted value. I will discuss experimental and theoretical efforts to resolve this puzzle. In particular, I will overview recent updates on radiative corrections to lepton-proton scattering and first BSM explanations.
Charged-current quasielastic neutrino scattering is the signal process in oscillation experiments and requires precise theoretical prediction for the analysis of modern and future experimental data. I will present 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.

Tomalak_seminar_KIAS_2023.pdf

Video