Speaker
Harald Ita
Description
The study of vector-boson pair production in association with jets is one of
the key signatures for the analysis of the electroweak symmetry breaking
mechanism. While the vector bosons are the clear signs of electroweak dynamics,
the associated jets are important tags to suppress backgrounds and probe the
kinematic dependence of the interactions. At high jet multiplicity the
di-vector boson signature plays a particularly important role as background to
Higgs transverse momentum distribution, vector boson scattering,
top-quark physics as well as background for searches of new physics. Given the
rather small cross section, this process class will rise to particular
importance in the ongoing physics run at the LHC with more data and
center-of-mass energy available. In this talk we present for the first time
Next-to-Leading Order QCD corrections to the Standard Model production of
oppositely charged W-bosons in association with up to three jets. The results
are obtained by using modern on-shell and unitarity methods, which have been
implemented in the BlackHat program. We present predictions for total and
differential cross sections at the LHC following previous related studies by
ATLAS and CMS. The quantum corrections reduce considerably spurious
renormalisation and factorisation scale dependence of the predictions.
Finally, we discuss universal features that appear at large jet multiplicities.
Authors
Harald Ita
Harald Ita
(Universität Freiburg)
