Soft-gluon effects in the H -> WW search channel at the LHC

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.