5 papers
Photonic Freeze-In
Peter Cox, Matthew J. Dolan, Frederick J. Hiskens
We present a new scenario of freeze-in, where the dark matter is produced exclusively via the annihilation of photons. We study fermionic and scalar dark matter models with a focus…
Irreducible Constraints on Hadronically Interacting Sub-GeV Dark Matter
Peter Cox, Matthew J. Dolan, Avirup Ghosh
We derive conservative upper limits on the dark-matter--nucleon scattering cross-section for sub-GeV mass dark matter. Working exclusively within the low-energy chiral effective th…
Dark Matter Induced Nucleon Decay Through the Neutron Portal
Nicole F. Bell, Peter Cox, Jayden L. Newstead +1
The neutron portal operator provides a theoretically motivated connection between the visible and dark sectors and features in several well-studied asymmetric dark matter models. T…
A new idea for relating the asymmetric dark matter mass scale to the proton mass
Peter Cox, Rafael E. Pérez, Raymond R. Volkas
Asymmetric dark matter is a well-motivated approach to explain the apparent coincidence between the relic densities of visible and dark matter, . A complete ex…
New Limits on Light Dark Matter-Nucleon Scattering
Peter Cox, Matthew J. Dolan, Joshua Wood
We derive new bounds on hadronically-interacting, sub-GeV mass dark matter. First, we show that one-loop interactions with photons can be sufficient to maintain equilibrium between…