Search for the standard model Higgs boson in the H → ZZ → 2ℓ2ν channel in pp collisions at \sqrt {\text{s}} = {7}\;{\text{TeV}}

A search for the standard model Higgs boson in the H → ZZ → 2l2ν decay channel, where l = e or μ, in pp collisions at a center-of-mass energy of 7 TeV is presented. The data were collected at the LHC, with the CMS detector, and correspond to an integrated luminosity of 4.6 fb−1. No significant excess is observed above the background expectation, and upper limits are set on the Higgs boson production cross section. The presence of the standard model Higgs boson with a mass in the 270-440 GeV range is excluded at 95% confidence level.