Speaker
Dario Kermanschah
(ETH Zürich)
Description
I will give an overview of our approach for the direct numerical integration of two-loop corrections to electroweak production. After subtracting infrared and ultraviolet singularities, we enable numerical integration in momentum space through analytic integration over the energy components of the loop momenta, subtraction of threshold singularities, and the use of importance sampling with the multi-channel Monte Carlo method. These features will be illustrated with examples from our recent calculations of fermionic two-loop corrections to di- and triboson production at the LHC.