Abstract

In this seminar, I will recap the latest achievements in theoretical collider physics. I will justify the importance of precision physics at the LHC and focus in particular on the new developments that have made it possible to complete the first phenomenological studies in NNLO QCD for various 2->3 scattering processes. I will also describe new results towards N3LO calculations for 2->2 scattering processes, as the production of pairs of photons or di-jet at the LHC.