Composite Dark Matter and a horizontal symmetry

• Main Authors: Alexandre Carvunis, Diego Guadagnoli, Méril Reboud, Peter Stangl
• Format: Article
• Language: English
• Published: SpringerOpen 2021-02-01
• Series: Journal of High Energy Physics
• Subjects: Beyond Standard Model; Chiral Lagrangians; Cosmology of Theories beyond the SM; Technicolor and Composite Models
• Online Access: https://doi.org/10.1007/JHEP02(2021)056

Abstract 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.