Speaker
Description
Linear Standard Model Extensions (LSMEs) are a motivated set of simplified models for exploring the phenomenology of physics beyond the Standard Model (BSM) and assessing the reach of future colliders. They capture a wide range of BSM physics: any particle coupling linearly to the Standard Model (SM) with relevant or marginal interactions is an LSME. Examples include vector-like fermions, new gauge bosons, strongly coupled composite resonances, $R$-parity-violating supersymmetry, or, more generally, any field whose quantum numbers permit such linear couplings to the SM. The finite possibilities have all been classified. We study the indirect sensitivity of the HL-LHC and FCC-ee future colliders to all LSMEs in a global analysis using the power of the Standard Model Effective Field Theory (SMEFT) framework, incorporating one-loop renormalisation group running and matching effects, to perform a more systematic survey than would otherwise have been feasible without recent SMEFT developments.