Search for Vector Boson Fusion Production of a Massive Resonance Decaying to a Pair of Higgs Bosons in the Four b-Quark Final State at the HL-LHC Using the CMS Phase-2 Detector

The search for a massive resonance produced by vector boson fusion and decaying into a pair of Higgs bosons, each decaying to a b quark-antiquark pair, at the High Luminosity Large Hadron Collider in proton-proton collisions at a centre-of-mass energy of 14 TeV is explored. The Higgs bosons are required to be sufficiently Lorentz-boosted for each to be reconstructed using a single large-area jet. We study the signal sensitivity for a narrow bulk graviton in extradimensional scenarios using a simulation of the upgraded CMS detector, assuming multiple proton-proton collisions in the same bunch crossing (up to 200), for data corresponding to an integrated luminosity of 3 ab\(^{-1}\). The expected significance for different assumed masses of the bulk graviton is presented.