Seminars 李政道研究所-粒子核物理研究所联合演讲

High-energy behavior of massive QCD/QED amplitudes

by Dr Guoxing Wang (LPTHE, CNRS)

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

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

Tsung-Dao Lee Institute



In this talk, I will talk about a factorization formula for gauge-theory scattering amplitudes up to two loops in the high-energy boosted limit at leading power, which is then used to give the prediction for the production of a Higgs boson in association with a top-antitop quark pair (ttH) at next-to-next-to-leading order (NNLO), which holds significant importance in directly probing the top-quark Yukawa coupling and relates to various fundamental questions in high energy physics. I will focus on the factorization and calculation of two-loop amplitudes for ttH production at hadron colliders in the high-energy boosted limit. By combining the contributions from real emissions, our results can be utilized to compute the NNLO differential cross sections for ttH production in the high-energy boosted limit. Finally, I will talk about the progress on the factorization in the high-energy boosted limit at next-to-leading power (NLP).


Guoxing Wang got the PhD in 2020 from Institute of Theoretical Physics, Peking University. 
He then moved to the School of Physics, Zhejiang University as a postdoc. During this period, he obtained the support of the International Postdoctoral Exchange Fellowship and join the Nikhef, Netherlands as a postdoc. In 2023, Guoxing Wang got a postdoc position in CNRS (LPTHE), France. His research interest is on the precision calculation at the collider, specifically in the top physics and the Higgs physics and he also works on the next-to-leading power factorization.

Host: Prof. Shu Li

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