Composite Dark Matter and a horizontal symmetry
Alexandre Carvunis (Laboratoire d’Annecy-le-Vieux de Physique Théorique UMR5108, Université de Savoie Mont-Blanc et CNRS, Annecy Cedex, F-74941, France); Diego Guadagnoli (Laboratoire d’Annecy-le-Vieux de Physique Théorique UMR5108, Université de Savoie Mont-Blanc et CNRS, Annecy Cedex, F-74941, France); Méril Reboud (Laboratoire d’Annecy-le-Vieux de Physique Théorique UMR5108, Université de Savoie Mont-Blanc et CNRS, Annecy Cedex, F-74941, France); Peter Stangl (Laboratoire d’Annecy-le-Vieux de Physique Théorique UMR5108, Université de Savoie Mont-Blanc et CNRS, Annecy Cedex, F-74941, France)
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.
