5 papers
On the Origins of Varying Gauge Couplings
Carlos Henrique de Lima, David McKeen, David E. Morrissey +1
Variations in the gauge couplings of the Standard Model have been searched for experimentally and proposed as solutions to open questions in fundamental physics. Varying gauge coup…
Genesis of baryon and dark matter asymmetries through ultraviolet scattering freeze-in
Pouya Asadi, Marianne Moore, David E. Morrissey +1
We introduce a new mechanism for the simultaneous generation of baryon and dark matter asymmetries through ultraviolet-dominated freeze-in scatterings. The mechanism relies on heav…
Dark Matter from Dark Glueball Dominance
David McKeen, Riku Mizuta, David E. Morrissey +1
New gauge forces can play an important role in the evolution of the early universe. In this work we investigate the cosmological implications of a pure Yang-Mills dark sector that…
Probing Lepton Number Violation at Same-Sign Lepton Colliders
Carlos Henrique de Lima, David McKeen, John N. Ng +2
Same-sign lepton colliders offer a promising environment to probe lepton number violation. We study processes that change lepton number by two units in the context of Majorana heav…
Signatures of Bulk Neutrinos in the Early Universe
David McKeen, John Ng, Michael Shamma
Neutrino masses and quantum gravity are strong reasons to extend the standard model of particle physics. A large extra dimension can be motivated by quantum gravity and can explain…