New physics beyond the Standard Model (SM) is needed to address open
questions within the SM and to explain experimental observations that
the SM cannot account for. While direct searches at the Large Hadron
Collider have reached their energy limit without finding particles
beyond the SM (BSM), precision measurements, in particular those in
flavour physics, probe energy scales far beyond the reach of direct
searches.
In this talk I will discuss how measurements of flavour and other
precision observables, combined with Effective Field Theory (EFT)
methods, can be used to indirectly search for heavy BSM particles. I
will present a likelihood function in the Standard Model EFT (SMEFT)
that includes a large number of flavour observables, and show how it can
be applied to the flavour phenomenology of BSM models.