24–29 Apr 2025
国科大杭州高等研究院 Hangzhou Institute for Advanced Study (UCAS)
Asia/Shanghai timezone

On-Shell EFT Matching through d-Dimensional Generalized Unitary Cuts

27 Apr 2025, 16:10
20m

Speaker

子正 周 (itp-cas)

Description

We present a novel framework for effective field theory (EFT) matching that leverages generalized unitarity cuts to generate one-loop integrands directly from tree-level amplitudes. This on-shell approach effectively eliminates contributions from unphysical degrees of freedom. Furthermore, by extending the on-shell prescription to d dimensions, our method recovers the rational terms essentially in matching process. The resulting framework achieves a precise mapping of ultraviolet amplitudes onto EFT Wilson coefficients, and seamlessly integrates with on-shell EFT operator bases. This work offers a promising pathway toward more efficient and systematic EFT calculations with broad applications in high-energy physics.

Authors

Mr Cihang Li (PKU) Prof. Jing Shu (PKU) Teng Ma (University of Chinese Academy of Sciences) Dr Ziyu Dong 子正 周 (itp-cas)

Presentation materials