Searching for New Phenomena in Final States with Two Leptons and b-tagged Jets

One of the fundamental predictions of the Standard Model is Lepton Flavor Universality. Any deviation from this prediction would indicate the existence of physics beyond the Standard Model. If Lepton Flavor Universality is indeed violated in nature, physics beyond the Standard Model may mediate interactions involving a pair of quarks and a pair of leptons, which can be modeled by a four-fermion contact-interaction. Some of these models motivate a search in novel final states, that have only been recently started to be tested at the LHC, including two opposite-sign leptons (electrons or muons) with large invariant mass and $b$-tagged jet selections. This unique signature allows an enhanced sensitivity to a variety of contact-interactions, well beyond the limits which currently exist in the literature. In this talk, I will discuss the relevant models for these signatures, the past and the ongoing searches at the LHC.