Search for diboson resonances with boson-tagged jets in pp collisions at sqrt(s)=13 TeV with the ATLAS detector

Narrow resonances decaying into WW, WZ or ZZ boson pairs are searched for in 36.7 fb-1 of proton proton collision 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 large-radius jets with high transverse momentum and 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 theories beyond the Standard Model. Model-dependent lower limits on the mass of new gauge bosons are set, with the highest limit set at 3.5 TeV in the context of mass-degenerate resonances that couple predominantly to bosons. © 2017 The Author(s)