Composite Dark Matter and a horizontal symmetry

We present a model of composite Dark Matter (DM), in which a new QCD-like confining hypercolor sector generates naturally stable hyperbaryons as DM candidates and at the same time provides mass to new weakly coupled gauge bosons H that serve as DM mediators, coupling the hyperbaryons to the Standard Model (SM) fermions. By an appropriate choice of the H gauge symmetry as a horizontal SU(2)(h) SM flavor symmetry, we show how the H gauge bosons can be identified with the horizontal gauge bosons recently put forward as an explanation for discrepancies in rare B-meson decays. We find that the mass scale of the H gauge bosons suggested by the DM phenomenology intriguingly agrees with the one needed to explain the rare B-decay discrepancies.

Automated summary

In this study, a model of composite Dark Matter is proposed, involving a new QCD-like confining hypercolor sector, hyperbaryons, and weakly coupled gauge bosons H. These elements interact in a way that intriguingly aligns with the mass scale needed to explain rare B-decay discrepancies.