Flavoured Dark Matter Beyond MFV

TL;DR

This paper reviews a flavoured dark matter model with new flavour-violating interactions, exploring its implications for particle physics experiments and the stability of dark matter under the Dark Minimal Flavour Violation hypothesis.

Contribution

It introduces a simplified Dirac fermionic dark matter model with a unique flavour violation structure, ensuring dark matter stability and analyzing its phenomenology across various experimental constraints.

Findings

Constraints from flavour observables limit model parameters.

LHC searches and direct detection experiments provide complementary bounds.

Interplay between different experimental sectors is crucial for model viability.

Abstract

We review a model of quark flavoured dark matter with new flavour violating interactions. This simplified model describes Dirac fermionic dark matter that is charged under a new U(3) flavour symmetry and couples to right-handed down quarks via a scalar mediator. The corresponding coupling matrix is assumed to be the only new source of flavour violation, which we refer to as the Dark Minimal Flavour Violation (DMFV) hypothesis. This ansatz ensures the stability of dark matter. We discuss the phenomenology of the simplest DMFV model in flavour violating observables, LHC searches, and direct dark matter detection experiments. Especially interesting is the non-trivial interplay between the constraints from the different sectors.