Searching for resonant $\textrm{HH}$ production in the $\mathrm{b\overline{b}q\overline{q}'}\ellν$ final state at CMS

Abstract: New, massive bosons could be found with the LHC. Theories with warped extra dimensions and supersymmetry predict the existence of such resonances, which for some model parameters, have a significant branching fraction to two Higgs bosons. A search for such particles in the $\mathrm{X}\rightarrow\mathrm{HH}\rightarrow\mathrm{b\overline{b}q\overline{q}'}\ell\nu$ channel with the CMS detector is presented. The analysis uses data collected during Run 2 of the LHC at a centre-of-mass energy of 13 TeV. Background is suppressed by reconstructing the full $\mathrm{HH}$ decay chain using jet substructure techniques and the identification of leptons with nearby, boosted jets. A two-dimensional template fit in the plane of resonance the mass and the $\mathrm{H}\rightarrow\mathrm{b\overline{b}}$ mass is used to characterize potential signal with this final state.