Search for diboson resonances with boson-tagged jets in $\it{pp}$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

Narrow resonances decaying into W W , W Z or Z Z boson pairs are searched for in 36.7 $\mathrm{fb}^{-1}$ of proton– proton data at a centre-of-mass energy of $\sqrt{s} = 13$ TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The diboson system is reconstructed using pairs of high transverse momentum, large-radius jets tagged as compatible with the hadronic decay of high momentum W or Z bosons, using jet mass and substructure properties. The search is sensitive to diboson resonances with masses in the range 1.2-5.0 TeV. No significant excess is observed in any signal region. Exclusion limits are set at the 95% confidence level on the production cross section times branching ratio to dibosons for a range of beyond the Standard Model theories.