Search for a heavy Higgs boson in $H\rightarrow ZZ\rightarrow 2\ell2\nu$ channel in pp collisions with CMS detector at the LHC

TL;DR

This paper reports a search for a heavy Higgs boson decaying into two Z bosons with two leptons and two neutrinos in proton-proton collisions at 7 and 8 TeV using the CMS detector, finding no significant excess.

Contribution

It presents a novel search strategy optimized for vector boson fusion and gluon fusion processes and reinterprets results within an electroweak singlet extension of the Standard Model.

Findings

No significant excess observed above background

Limits set on heavy Higgs boson production cross-section

Results reinterpreted for electroweak singlet models

Abstract

A search for a heavy Higgs boson in the $H\rightarrow ZZ\rightarrow 2\ell2\nu$ decay channel, where $\ell$ = e or $\mu$, in pp collisions at a centre-of-mass energy of 7 and 8 TeV is presented. The search is optimized separately for the vector boson fusion and the gluon fusion production processes. No significant excess is observed above the background expectation. A re-interpretation of the results as a search for an electroweak singlet extension of the Standard Model is also presented.