HEP Colloquia 2026

by Mikhail Gorshteyn (Institut fur Kernphysik, Johannes Gutenberg-Universitat)

Wednesday 1 Apr 2026, 14:30 → 15:30 Europe/Rome

Aula E (Department of Physics)

Neutrino-mediated long range parity-violating electron-nucleus interactions

Recently, it has been claimed that hadronic weak charges might receive unexpectedly large — up to 1% (!) —  corrections due to neutrino-induced long range parity-violating potentials, arising at the one-loop level in the Standard Model. I show that these claims are unsubstantiated as they are based on a neglect of the finite nuclear size. Once the latter is correctly accounted for, these electroweak corrections acquire their natural size, O(G_F/R²), with G_F the Fermi constant and R the nuclear radius.
Numerically, it amounts to mere 1e-8 or less correction to the hadronic weak charges, making them negligible.