Search for a heavy resonance decaying into a Z boson and a vector boson in the $\nu\overline{\nu}\mathrm{q}\overline{\mathrm{q}}$ final state

TL;DR

This paper reports a search for heavy resonances decaying into Z and W bosons in a specific neutrino and hadronic final state using CMS data, setting limits on new particle masses and production cross sections.

Contribution

First search for heavy resonances decaying into ZW or ZZ in the $ uar{ u}qar{q}$ final state at 13 TeV with CMS, providing new limits on W' and graviton models.

Findings

No significant excess observed over background.

Set 95% CL limits on cross sections and masses of W' and gravitons.

Excluded W' masses below 3.4 TeV in certain models.

Abstract

A search is presented for a heavy resonance decaying into either a pair of Z bosons or a Z boson and a W boson (ZZ or WZ), with a Z boson decaying into a pair of neutrinos and the other boson decaying hadronically into two collimated quarks that are reconstructed as a highly energetic large-cone jet. The search is performed using the data collected with the CMS detector at the CERN LHC during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to a total integrated luminosity of 35.9 fb$^{-1}$. No excess is observed in data with regard to background expectations. Results are interpreted in scenarios of physics beyond the standard model. Limits at 95% confidence level on production cross sections are set at 0.9 fb (63 fb) for spin-1 W$'$ bosons, included in the heavy vector triplet model, with mass 4.0 TeV (1.0 TeV), and at 0.5 fb (40 fb) for spin-2 bulk gravitons with mass 4.0 TeV (1.0 TeV). Lower limits are set on the masses of W$'$ bosons in the context of two versions of the heavy vector triplet model of 3.1 TeV and 3.4 TeV, respectively.