Search for heavy resonances decaying into a $\mathrm{Z}$ boson and a $\mathrm{W}$ boson in the $\ell^+\ell^-\mathrm{q}\bar{\mathrm{q}}$ final state

A search for heavy resonances decaying into a pair of vector bosons is performed in the $2\ell2\mathrm{q}$ final state using $12.9~\mathrm{fb}^{-1}$ of data collected in 2016 by the CMS experiment at the LHC in proton-proton collisions with a center-of-mass energy of $\sqrt{s}=13~\mathrm{TeV}$. The final state probed involves the leptonic decay of a $\mathrm{Z}$ boson ($\mathrm{Z} \to \ell \ell$, with $\ell = \mathrm{e},\mu$), while the other vector boson $\mathrm{W}$ is reconstructed from high-momentum quark pairs detected as a single massive jet. The discriminating power of the jet mass distribution and jet substructure are exploited to suppress the amount of background from known standard model processes. The search is performed in the boosted regime for resonances with mass larger than $600~\mathrm{GeV}$ up to $3000~\mathrm{GeV}$. The result is consistent with the standard model prediction and upper limits on the production cross section for spin-1 resonances are derived as a function of the resonance mass.