769 citations · 5.6k across the 83 of their papers we have counts for
84 papers
Is The Universal Matter - Antimatter Asymmetry Fine Tuned?
Gary Steigman, Robert J. Scherrer
The asymmetry between matter and antimatter is key to the existence and nature of our Universe. A measure of the matter - antimatter asymmetry of the Universe is provided by the pr…
CMB Constraints On The Thermal WIMP Mass And Annihilation Cross Section
Gary Steigman
A thermal relic, often referred to as a weakly interacting massive particle (WIMP), is a particle produced during the early evolution of the Universe whose present (relic) abundanc…
BBN And The CMB Constrain Neutrino Coupled Light WIMPs
Kenneth M. Nollett, Gary Steigman
(abridged) In the presence of a light WIMP (mass m_chi < 30 MeV), there are degeneracies among the WIMP's nature, its couplings to standard model particles, its mass, and the numbe…
Light WIMPs And Equivalent Neutrinos
Gary Steigman, Kenneth M. Nollett
Very light WIMPs (chi), thermal relics that annihilate late in the early Universe, change the energy and entropy densities at BBN and at recombination. BBN, in combination with the…
Light WIMPs, Equivalent Neutrinos, BBN, and the CMB
Gary Steigman, Kenneth M. Nollett
Recent updates to the observational determinations of the primordial abundances of helium and deuterium are compared to the predictions of BBN to infer the universal ratio of baryo…
BBN And The CMB Constrain Light, Electromagnetically Coupled WIMPs
Kenneth M. Nollett, Gary Steigman
(Abridged) In the presence of a light WIMP (< 30 MeV), there are degeneracies among the nature of the WIMP, its couplings to standard model particles, its mass m_chi, and the numbe…