Study of Higgs boson production in bosonic decay channels at the LHC (including off-shell production)

The experimental study of Higgs boson production in bosonic decay channels at the LHC will be presented in this presentation. The bosonic decay channels include $ZZ$, $WW$, $\gamma\gamma$ and $Z\gamma$. $WW$ decay channel has a large branching fraction. $\gamma\gamma$ and $ZZ$ can construct the whole event topology. $Z\gamma$ can be sensitive to exotic Higgs decays. Also, off-shell production is now expected to be sensitive to the Higgs decay width and additional Higgs bosons or new phenomena beyond the Standard Model (SM) of the particle physics. Therefore, the bosonic decay channels are assumed to a key to probe the SM and beyond that. This presentation will show the results at $\sqrt{s}=7$ and $8$ TeV.