Continuous Flavor Symmetries and the Stability of Asymmetric Dark Matter

TL;DR

This paper explores how continuous flavor symmetries in asymmetric dark matter models can relax mediator mass bounds, enabling collider searches and linking dark matter stability with flavor physics.

Contribution

It demonstrates that flavor symmetries in ADM models allow for lower mediator mass scales, connecting dark matter stability with flavor structure and collider phenomenology.

Findings

Looser lower bounds on mediator masses due to flavor symmetries.

Potential for LHC searches for mediators in B=2 ADM models.

FCNC constraints analyzed for MFV and Froggatt-Nielsen patterns.

Abstract

Generically, the asymmetric interactions in asymmetric dark matter (ADM) models lead to decaying DM. We show that, for ADM that carries nonzero baryon number, the continuous flavor symmetries that generate the flavor structure in the quark sector also imply a looser lower bound on the mass scale of the asymmetric mediators between the dark and visible sectors. The mediators for $B=2$ ADM that can produce a signal in the future indirect dark matter searches can thus also be searched for at the LHC. For two examples of the mediator models, with either the MFV or Froggatt-Nielsen flavor breaking pattern, we derive the FCNC constraints and discuss the search strategies at the LHC.