$k_t$-factorization vs collinear factorization in $W^{+}{W}^{-}$ pair production at the LHC

Abstract

In this paper, we calculate the inclusive rate of $W^{+}{W}^{-}$ pair production through leptonic decay channels $W^{+}{W}^{-}\to l^{+}{\nu }_l+l^{\prime -}{\nu }_{l^{\prime }}$ in the $k_t$-factorization framework. We also consider the exclusive $W^{+}{W}^{-}$ pair production through the one-loop induced $gg\to H\to W^{+}{W}^{-}$ 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.

21 pages, 15 figures, and 1 table

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