Searches for heavy diboson resonances at $\sqrt{s} = 13$ TeV with the ATLAS detector

Sogaard, Andreas

doi:10.22323/1.276.0226

Abstract

A combined search for high-mass resonances decaying to

$WW$ ,

$WZ$ , and

$ZZ$ final states with jets in boosted topologies is presented. The combination comprises four individual searches in the

$\nu\nu qq$ ,

$\ell\nu qq$ ,

$\ell\ell qq$ , and

$qqqq$ final states, performed in

$pp$ collision data corresponding to an integrated luminosity of

$3.2~\mathrm{fb}^{-1}$ at

$\sqrt{s} = 13~\mathrm{TeV}$ collected by the ATLAS detector at the CERN Large Hadron Collider (LHC). Exclusion limits on the heavy resonance production cross section times branching fraction to dibosons are set at the

$95\%$ confidence level for three benchmark signal models. The combined search finds upper exclusion limits on the masses of a scalar singlet, a heavy vector-boson triplet, and a Randall-Sundrum graviton at

$2650$ ,

$2600$ , and

$1100~\mathrm{GeV}$ , respectively.