The quest for physics beyond the Standard Model

The Standard Model of particle physics well describes a vast number of observables up to the TeV scale However it cannot be a complete description of Nature as it cannot explain various experimental observations For example it lacks a viable dark matter candidate and can neither explain the observed matter antimatter asymmetry of our Universe nor neutrino oscillations Thus physics beyond the Standard Model is well motivated In this seminar we explore different methods to probe new physics at multiple energy scales from high energy colliders such as the LHC to precision low energy experiments In particular we focus on searches for new force carriers at the LHCb experiment and in precision atomic spectroscopy We show that the inclusive search for dark photons at the LHCb experiment already probes new parameter space and can be easily interpreted for a large variety of new physics models On the precision frontier we explore the potential of isotope shift spectroscopy to probe new long range force carriers Finally we explore interplay between proposed solution to B anomalies and search for high mass narrow resonances at the LHC