The LHC Excess of Four-lepton Events Interpreted as Higgs-boson Signal: Background from Double Drell--Yan Process?

We construct a simple model of the Double Drell--Yan Process (DDYP) for proton--proton collisions and investigate its possible contribution to the background for the Higgs-boson searches at the LHC. We demonstrate that under the assumption of the predominance of short range, ${\cal O}(0.1)$~fm, transverse-plane correlations of quark--antiquark pairs within the proton, this contribution becomes important and may even explain the observed excess of the four-lepton events at the LHC --- the events interpreted as originating from the Higgs-boson decays: $H\rightarrow ZZ^{*} \rightarrow 4l$ and $H\rightarrow WW^{*}\rightarrow 2l 2\nu$