Compositeness beyond the Standard Model

One of the leading motivations in the search for new physics at the LHC is the idea of `naturalness’. As it stands, the current Standard Model (SM) of particle physics is deemed unnatural due the unexplained smallness of the Higgs boson mass, and due to the unexplained hierarchical nature of the Yukawa couplings. A promising explanation of these features is that the SM Higgs is composite, and that its fermions are partially-composite. Much like in QCD, this model predicts a plethora of new composite states with masses near the confinement scale. However the absence of any new physics detection at the LHC puts stringent constraints on the current models. In this talk we will discuss the Minimal Composite Higgs Model (MCHM) and how 5D holographic techniques can be used as calculational tools to derive predictions. We will then present results from a study of the top-partner spectrum in the holographic MCHM (1510.08482), and phenomenological bounds on heavy spin-2 composite states using the latest LHC results (1603.09550).