QCD factorization and jet cross sections at the LHC

by Prof. Dingyu Shao (Fudan University)

Thursday 23 Dec 2021, 10:00 → 12:00 Asia/Shanghai

Tsung-Dao Lee library/Fourth Floor-410 - 410# Meeting Room (Tsung-Dao Lee Library)

Abstract:

 

Jet cross sections at high-energy colliders exhibit intricate patterns of logarithmically enhanced higher-order corrections. In particular, so-called non-global logarithms emerge from soft radiation emitted off energetic partons inside jets. While this is a single-logarithmic effect at lepton colliders, at hadron colliders phase factors in the amplitudes lead to double-logarithmic corrections starting at four-loop order. This effect was discovered a long time ago, but not much is known about the higher-order behavior of these terms and their process dependence. In Phys. Rev. Lett. 127 (2021) 212002, we derive, for the first time, the all-order structure of these “super-leading logarithms” for generic  scattering processes at hadron colliders and resum them in closed form. 

 

Biography:

 

邵鼎煜，复旦大学物理学系青年研究员。2014年于北京大学获得博士学位，先后在瑞士Bern大学、 欧洲核子研究中心理论部、美国加州大学洛杉矶分校从事博士后工作，2021年加入复旦大学。研究方向包括：量子场论及有效场论的发展和应用；非阿贝尔规范理论的红外结构及量子色动力学因子化定理证明；高能对撞机中的现象学研究：喷注、重味夸克及Higgs物理；自旋物理、强子三维结构的研究。目前在国际高水平期刊发表文章30余篇，含4篇 Physical Review Letters，总引用1000余次。多项研究结果得到 LHC、RHIC、Belle以及EIC等国际大科学装置实验组的高度关注，被引用近百次。

 

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DYShao.pdf