Two-loop virtual amplitudes for $qq \to ttH$ via modular arithmetic and sector decomposition

by Vitalii Ivanovych Maheria

Thursday 13 Jun 2024, 10:00 → 11:00 Europe/Zurich

4/S-056 (CERN)

Matching increasing experimental precision of ttH production at LHC and HL-LHC would soon require NNLO-level predictions on the theory side, but calculating massive five-point two-loop virtual amplitudes needed for that is at the frontier of what is possible with the current methods of solving IBP relations and evaluation of Feynman integrals. In this talk I would like to go into the detail of how the computational challenges are resolved in a recent calculation of the Nf part of qq->ttH amplitude, and what is planned after that.
Based on: 2402.03301, 2211.03572, and 2305.19768.

magerya-qqtth-cern2024.pdf