ABSTRACT:
New methods and novel strategies are needed in the search for physics beyond the Standard Model (BSM). Motivated by signals of lepton flavor universality violation in semileptonic B decays, I’ll discuss state-of-the-art theoretical developments and new model-independent theoretical tools that are required to self-consistently and efficiently classify these, or other, potential BSM effects within experimental analysis frameworks. I’ll then discuss the development, theory motivations and reach for a proposed subdetector at the LHCb experiment — CODEX-b — capable of competitively searching for decays-in-flight of exotic long-lived particles, which can be signals of a wide range of well-motivated BSM theories.