山东大学理论物理研究所研讨会

报告题目：Weak Charges at Two Loops: Electroweak Corrections for P2 and MOLLER

报告人：陈立松

时  间：2026年9月10日下午3点

地  点：知新楼C913

邀请人：王 健

摘要：The P2 experiment at MESA and the MOLLER experiment at Jefferson Lab will measure the weak charges of the proton and electron with unprecedented precision. Because these weak charges are suppressed by \(1-4\sin^2\theta_W\), electroweak radiative corrections have an enhanced relative impact, making next-to-next-to-leading-order predictions essential.

In this seminar, I will present recent progress in two-loop electroweak calculations for parity-violating electron scattering. I will discuss the treatment of scale hierarchies, large electroweak logarithms, renormalization, and hadronic effects, including the \(\gamma Z\) box contribution in electron–proton scattering. I will conclude with the remaining theoretical challenges for fully exploiting the precision and new-physics sensitivity of P2 and MOLLER.

报告人简介：Lisong Chen is a postdoctoral researcher at Johannes Gutenberg University Mainz. He received his PhD in theoretical particle physics from the University of Pittsburgh and subsequently held his first postdoctoral position at the Karlsruhe Institute of Technology. His research focuses on precision calculations in the Standard Model and their applications to particle phenomenology, as well as model-independent studies of physics beyond the Standard Model.