kt factorization versus collinear factorization in W+ W- pair production at the LHC

In this paper, we calculate the inclusive rate of W+W- pair production through leptonic decay channels W+W- -> l(+)nu(l) + l'(-) nu(l)' in the k r -factorization framework. We also consider the exclusive W+W- pair production through the one-loop induced gg -> H -> W+W- channel that is important for the study of new physics beyond the Standard Model. The results are compared with predictions from the Herwig 7 event generator in the collinear factorization framework and with the experimental data from the ATLAS and the CMS collaborations. It will be shown that our predictions for the W+W- boson pair production signals are in agreement with the experimental data as well as the collinear results.