NNLO EW correction to low-energy electron-electron scattering

by Dr Lisong Chen (Johannes-Gutenberg University of Mainz)

Tuesday 16 Jun 2026, 13:00 → 14:00 Europe/Brussels

E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

Precision parity-violating electron scattering (PVES) provides a sensitive low-energy probe of the electroweak (EW) sector of the Standard Model and of possible new neutral-current interactions. In this talk, I will discuss the calculation of next-to-next-to-leading order (NNLO) electroweak corrections to low-energy polarized electron-electron scattering, with emphasis on the Møller process relevant for the MOLLER experiment. Since the anticipated experimental precision requires a correspondingly precise Standard Model prediction for the left-right asymmetry, NNLO EW corrections are an essential ingredient.

I will describe the organization of the two-loop calculation and highlight the relevant technical aspects. I will also discuss the relation of this calculation to parity-violating electron-proton scattering, especially the P2 program, where similar EW corrections enter the interpretation of low-energy weak-charge observables.

Zoom: https://cern.zoom.us/j/62591938215?pwd=qSqjURfb693pfZR7aFvYR2vJw3YnuD.1