We present the first calculation of next-to-leading order QCD corrections to
QCD-induced ZZ production in association with two jets at hadron colliders.
Both Z bosons decay leptonically with all off-shell effects, virtual photon
contributions and spin-correlation effects fully taken into account. This
process is an important background to weak boson scattering, to the measurement
of quartic gauge couplings and to searches for signals of new physics beyond
the Standard Model. As expected, the next-to-leading order corrections reduce
significantly the scale uncertainty and show a non-trivial phase space
dependence in kinematic distributions. Our code will be publicly available as
part of the parton level Monte Carlo program VBFNLO.Comment: 12 pages, 4 figures, 2 tables. arXiv admin note: text overlap with
arXiv:1402.050