High P_T Higgs Excess As a Signal of Non-Local QFT at the LHC

Abstract Non-local extensions of the Standard Model with a non-locality scale $$\varLambda _{NL}$$ Λ NL have the effect of smearing the pointlike vertices of the Standard Model. At energies significantly lower than $$\varLambda _{NL}$$ Λ NL vertices appear pointlike, while beyond this scale all beta functions vanish and all couplings approach a fixed point leading to scale invariance. Non-local SM extensions are ghost free, with the non-locality scale serving as an effective cutoff to radiative corrections of the Higgs mass. We argue that the data expected to be collected at the LHC phase 2 will have a sensitivity to non-local effects originating from a non-locality scale of a few TeV. Using an infinite derivative prescription, we study modifications to heavy vector-boson cross sections that can lead to an enhanced production of boosted Higgs bosons in a region of the kinematic phase space where the SM background is very small.