Composite Dark Matter and Neutrino Masses from a Light Hidden Sector

Abstract

We study a class of models in which the particle that constitutes dark matter arises as a composite state of a strongly coupled hidden sector. The hidden sector interacts with the Standard Model through the neutrino portal, allowing the relic abundance of dark matter to be set by annihilation into final states containing neutrinos. The coupling to the hidden sector also leads to the generation of neutrino masses through the inverse seesaw mechanism, with composite hidden sector states playing the role of the singlet neutrinos. We focus on the scenario in which the hidden sector is conformal in the ultraviolet, and the compositeness scale lies at or below the weak scale. We construct a holographic realization of this framework based on the Randall-Sundrum setup and explore the implications for experiments. We determine the current constraints on this scenario from direct and indirect detection, lepton flavor violation and collider experiments and explore the reach of future searches. We show that in the near future, direct detection experiments and searches for $\mu \to e$ conversion will be able to probe new parameter space. At colliders, dark matter can be produced in association with composite singlet neutrinos via Drell Yan processes or in weak decays of hadrons. We show that current searches at the Large Hadron Collider have only limited sensitivity to this new production channel and we comment on how the reconstruction of the singlet neutrinos can potentially expand the reach.

55 pages, 22 figures, 4 tables; v3: Matches published version

References in corpus (21)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
• The Present and Future Status of Heavy Neutral Leptons
• BBN And The CMB Constrain Neutrino Coupled Light WIMPs
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Same Sign versus Opposite Sign Dileptons as a Probe of Low Scale Seesaw Mechanisms
• The Little Randall-Sundrum Model at the Large Hadron Collider
• Dark Matter and Electroweak Symmetry Breaking in Models with Warped Extra Dimensions
• Dirac Neutrino Dark Matter
• Towards Powerful Probes of Neutrino Self-Interactions in Supernovae
• A Dynamical Framework for KeV Dirac Neutrino Warm Dark Matter
• Searching for Sub-GeV Dark Matter in the Galactic Centre using Hyper-Kamiokande
• Hadronic and hadron-like physics of Dark Matter
• Composite Dirac Neutrinos
• Dimensions of Supersymmetric Operators from AdS/CFT
• Light Neutrinos from a Mini-Seesaw Mechanism in Warped Space
• Unified Scenario for Composite Right-Handed Neutrinos and Dark Matter
• KeV Warm Dark Matter and Composite Neutrinos
• Conformal Neutrinos: an Alternative to the See-saw Mechanism
• Neutrino Masses from Low Scale Partial Compositeness