SEMINARIO DE FISICA TEORICA I Y II

Titulo:         W boson pair production to NNLO at the LHC
Conferenciante: Grigorios Chachamis ( Wuerzburg University)
Dia y hora:     11, 14:15 (Aula 6A)

Resumen:

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 results for the
two-loop and the one-loop-squared 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 results are 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.