7 papers · 1 filter
Kinetic recoupling of dark matter
Benjamin V. Lehmann, Logan Morrison, Stefano Profumo +1
We study the possibility that dark matter re-enters kinetic equilibrium with a radiation bath after kinetic decoupling, a scenario we dub kinetic recoupling. This naturally occurs,…
Sterile Neutrinos from Dark Matter: A Nightmare?
Logan Morrison, Stefano Profumo, Bibhushan Shakya
We provide a comprehensive study of observable spectra from dark matter pair-annihilation or decay into sterile (right-handed) neutrinos. This occurs, for instance, in neutrino por…
Precision Gamma-Ray Constraints for Sub-GeV Dark Matter Models
Adam Coogan, Logan Morrison, Stefano Profumo
The indirect detection of dark matter particles with mass below the GeV scale has recently received significant attention. Future space-borne gamma-ray telescopes, including All-Sk…
Sterile Neutrino Dark Matter from Generalized -Symmetric Early-Universe Cosmologies
Adam Duran, Logan Morrison, Stefano Profumo
We generalize gravitational particle production in a radiation-dominated -symmetric universe to non-standard, but also -symmetric early universe cosmologies. We calculate…
Large -ightmare Dark Matter
Logan Morrison, Stefano Profumo, Dean J. Robinson
A dark QCD sector is a relatively minimal extension of the Standard Model (SM) that admits Dark Matter (DM) candidates but requires no portal to the visible sector beyond gravitati…
One-Loop Charge-Breaking Minima in the Two-Higgs Doublet Model
Pedro M. Ferreira, Logan A. Morrison, Stefano Profumo
We analyze the vacuum structure of the one-loop effective potential in the two Higgs doublet model. We find that electroweak-breaking vacuua can coexist with charge breaking ones,…