Search for heavy resonances decaying into WW in the final state in pp collisions at with the ATLAS detector

A search for neutral heavy resonances is performed in the $$ decay channel using pp collision data corresponding to an integrated luminosity of $$ , collected at a centre-of-mass energy of 13 $$ by the ATLAS detector at the Large Hadron Collider. No evidence of such heavy resonances is found. In the search for production via the quark-antiquark annihilation or gluon-gluon fusion process, upper limits on $$ as a function of the resonance mass are obtained in the mass range between 200 $$ and up to 5 $$ for various benchmark models: a Higgs-like scalar in different width scenarios, a two-Higgs-doublet model, a heavy vector triplet model, and a warped extra dimensions model. In the vector-boson fusion process, constraints are also obtained on these resonances, as well as on a Higgs boson in the Georgi-Machacek model and a heavy tensor particle coupling only to gauge bosons.