Exploring the flavour structure of the high-scale MSSM

We analyse the sensitivity of quark flavour-changing observables to the MSSM, in a regime of heavy superpartners. We analyse four distinct and motivated frameworks characterising the structure of the soft-breaking terms by means of approximate flavour symmetries. We show that a set of six low-energy observables with realistic chances of improvement in the near future, namely [Formula: see text] , [Formula: see text] , [Formula: see text] , [Formula: see text] , and the phase of D–[Formula: see text] mixing, could play a very important role in characterising these frameworks for superpartner masses up to [Formula: see text] TeV. We show that these observables remain very interesting even in a long-term perspective, i.e. even taking into account the direct mass reach of the most ambitious future high-energy colliders.