Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
W pair production via quark-anti-quark-annihilation is an important signal process in the search for New Physics as well as the dominant irreducible background for one of the main Higgs discovery channels: H -> W W -> 4 leptons. Therefore, the accurate knowledge of this process is vital for the LHC. We present the result for the two loop virtual QCD corrections to the W boson pair production in the limit where all kinematical invariants are large compared to the mass of the W boson. Our resultis exact up to terms suppressed by powers of the W boson mass. The infrared pole structure is in agreement with the prediction of Catani's general formalism for the singularities of two-loop QCD amplitudes.