Electroweak Corrections crossing the scale — from low-energy experiment to Z-pole

by Lisong Chen (Johannes Gutenberg University)

Thursday 24 Sept 2026, 15:30 → 16:30 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee Institute)

Abstract：Precision tests of the electroweak sector of the Standard Model provide powerful indirect probes of physics beyond the Standard Model.

Fully exploiting the precision of present and future experiments requires the residual theoretical uncertainty, including that associated with uncalculated higher-order corrections, to remain well below the projected experimental uncertainty.

In this talk, I will present recent progress in precision calculations in two complementary energy regimes. At low energies, I will discuss the NNLO electroweak corrections to parity-violating electron scattering relevant to MOLLER at JLab and P2 at MESA in Mainz. At the Z pole, I will discuss precision predictions for (e^+e^- \to f\bar f) at future lepton colliders such as FCC-ee and CEPC, including the separation of resonant and nonresonant contributions in the pole scheme and the incorporation of dimension-six SMEFT effects. I will highlight the main theoretical challenges and the impact of these improvements on the sensitivity of the experiments to physics beyond the Standard Model.

Biography: Lisong Chen is a postdoc at Johannes Gutenberg University. He received his Doctoral's degree at University of Pittsburgh and worked at KIT for his first postdoc. His research interests includes precision calculation and its applications in particle phenomenology. Model-independent study of the physics beyond the Standard Model.

Tencent Meeting ID: 935397827   No Passcode

Meeting Link: https://meeting.tencent.com/dm/u4qzyqoT4ahY