Search for a new Heavy Resonance in final states with di-jet or di-$b$-jets with the ATLAS Detector

Many theories beyond the Standard Model predict new resonances which decay to jets. Such final states are of particular interest at the Large Hadron Collider (LHC) since new phenomena produced in parton collisions are likely to produce final states with (at least) two partons and probe the very highest masses at the LHC. Certain models have a sizeable branching fraction of b-quarks. The results reported here uses the proton-proton($pp$) collision data sample collected in 2015 - 2018 by the ATLAS detector at the LHC with a centre-of-mass energy of 13 TeV with a total integrated luminosity of 139 fb$^{-1}$.