CMS High mass WW and ZZ Higgs search with the complete LHC Run1 statistics

TL;DR

This paper reports a search for a heavy Higgs boson decaying into WW and ZZ channels using CMS data from LHC Run 1, excluding a wide mass range and interpreting results within an extended standard model.

Contribution

It provides the first comprehensive search for high-mass Higgs bosons in multiple decay channels using the full Run 1 CMS dataset, including model interpretation.

Findings

Excluded Higgs masses between 145 and 1000 GeV at 95% CL

Set limits on cross section times branching ratio for heavy Higgs

Interpreted results within an electroweak singlet extension of the standard model

Abstract

A search for the decay of a heavy Higgs boson in the H$\to$ZZ and H$\to$WW channels is reported, analyzing several final states of the H$\to$ZZ and H$\to$WW decays. The search used proton-proton collision data corresponding to an integrated luminosity of up to 5.1 fb$^{-1}$ at $\sqrt{s} = 7$ TeV and up to 19.7 fb$^{-1}$ at $\sqrt{s} = 8$ TeV recorded with the CMS experiment at the CERN LHC. A Higgs boson with Standard Model-like coupling and decays in the mass range of 145 $< m_H <$ 1000 GeV is excluded at 95\% confidence level, based on the limit on the product of cross section and branching fraction. An interpretation of the results in the context of an electroweak singlet extension of the standard model is reported.