  Non resonant production of WW pairs is the most important background in the
Higgs search in the range 155 \ltap M_H \ltap 170 GeV at the LHC. We consider
QCD corrections to WW pair production in hadron collisions and present a
calculation which consistently combines NLO corrections with soft-gluon
resummation at small transverse momenta of the WW pair. Spin correlations are
fully taken into account in our calculation. We study the impact of the
resummation on the leptonic observables and perform a comparison with results
obtained at NLO and with the MC@NLO event generator.
