Speaker
Description
Motivated by the upcoming High-Luminosity Large Hadron Collider upgrade and the ongoing efforts towards a Muon Collider, we investigate the potential of future colliders to probe beyond the Standard Model physics through rare decay observables, all within the model-independent dimension-6 Standard Model Effective Field Theory (SMEFT) framework. We focus on operators involving electroweak gauge fields or fermionic currents coupled to the electroweak sector to understand their role in rare Z and Higgs decay topologies. We discuss how invariant mass distributions in multi-lepton outgoing particles from these decay topologies can provide a way to enhance the sensitivity of future colliders to these rare decay processes and thus improve constraints relative to existing bounds.