QCD factorization and jet cross sections at the LHC
by
Prof.Dingyu Shao(Fudan University)
→
Asia/Shanghai
Tsung-Dao Lee library/Fourth Floor-410 - 410# Meeting Room (Tsung-Dao Lee Library)
Tsung-Dao Lee library/Fourth Floor-410 - 410# Meeting Room
Tsung-Dao Lee Library
60
Description
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.
