Speaker
Dr
Xiang Chen
(University of Zurich)
Description
The production of a top–antitop quark pair in association with a Higgs boson (ttH) is a crucial process at the Large Hadron Collider (LHC), as it provides a direct probe of the top-quark Yukawa coupling. Previous phenomenological results for this process have relied on dynamical approximations to the two-loop virtual corrections, while the amplitudes themselves have not yet been calculated directly. In this talk, I will present the first direct computation of the two-loop amplitudes for the quark-initiated channel of ttH production in the generalised leading-colour limit. I will discuss the computational strategies employed and present the preliminary results obtained.
Author
Dr
Xiang Chen
(University of Zurich)