Dark matter within the minimal flavour violation ansatz

Minimal Flavour Violation hypothesis can provide an attractive framework for Dark Matter (DM). We consider scalar DM candidates carrying flavour quantum numbers and whose representation under the flavour group guarantees DM stability. They interact with the Standard Model fields through Higgs portal at renormalisable level and also to quarks through dimension-6 operators. We provide a systematic analysis of the viable parameter space for the DM fields, which are triplet of the flavour group, considering several DM-quark interactions. In this framework, we analyse in which cases the viable parameter space differs from Higgs portal models thanks to the underlying flavour structure. In contrast to minimal Higgs portal scenarios, we find that light DM in the GeV mass range as well as heavier candidates above Higgs resonance could be allowed by colliders, direct and indirect DM detection searches as well as flavour constraints. The large mass regime above mt could even be beyond the reach of future experiments such as Xenon 1TLLH is supported through an “FWO-Vlaanderen” post-doctoral fellowship project number 1271513. LLH also recognises partial support from the Belgian Federal Science Policy Office through the Interuniversity Attraction Pole P7/37 and from the Strategic Research Program “High-Energy Physics” of the Vrije Universiteit Brussel. LM acknowledges partial support by European Union FP7 ITN INVISIBLES (Marie Curie Actions, PITN-GA-2011-289442) and the Juan de la Cierva programme (JCI-2011-09244