Search for a Standard Model Higgs boson in the decay channel H $\rightarrow ZZ^{(*)} \rightarrow$ 4l

A search for a Higgs boson in the four lepton ($4l$) decay channel H $\rightarrow$ $ZZ^{(\ast)}$ with each Z boson decaying to an electron or muon pair is presented using $pp$ collisions from the LHC at $\sqrt s$ = 7 TeV. The data analyzed correspond to an integrated luminosity of 1.66 $\pm $ 0.07 fb$^{-1}$ recorded by the CMS detector in 2010 and 2011. The search covers Higgs boson mass ($m_{H}$) hypotheses of 110 $< m_{H} <$ 600 $GeV/c^{2}$. Twenty one events are observed, while 21.2 $\pm$ 0.8 events are expected from standard model background processes. The events are not clustered in mass excluding interpretation as the standard model Higgs boson and there ($4l$) mass distribution is consistent with the expectation of standard model continuum production of $ZZ^{(\ast)}$ pairs. Upper limits at 95 $\%$ CL on the cross section $\times$ branching ratio for a Higgs boson with standard model-like decays exclude cross sections from about one to two times the expected standard model cross section for masses in the range 150$< m_{H} <$ 420 $GeV/c^{2}.$