216 citations · 402 across the 7 of their papers we have counts for
5 papers · 1 filter
Solving the cosmic lithium problems with primordial late-decaying particles
Daniel Cumberbatch, Kazuhide Ichikawa, Masahiro Kawasaki +3
We investigate the modifications to predictions for the abundances of light elements from standard Big-Bang nucleosynthesis when exotic late-decaying particles with lifetimes excee…
Accounting for the Unresolved X-ray Background with Sterile Neutrino Dark Matter
Daniel Cumberbatch, Joseph Silk
We consider a scenario where keV sterile neutrinos constitute all of the currently inferred dark matter abundance, whose radiative decays could potentially account for the flux con…
Sterile neutrinos as subdominant warm dark matter
A. Palazzo, D. Cumberbatch, A. Slosar +1
In light of recent findings which seem to disfavor a scenario with (warm) dark matter entirely constituted of sterile neutrinos produced via the Dodelson-Widrow (DW) mechanism, we…
Difficulties for Compact Composite Object Dark Matter
Daniel T. Cumberbatch, Glenn D. Starkman, Joseph Silk
It has been suggested ``that DM particles are strongly interacting composite macroscopically large objects ... made of well known light quarks (or ... antiquarks)." In doing so it…
Local dark matter clumps and the cosmic ray positron excess
Daniel T. Cumberbatch, Joseph Silk
It has been proposed that the excess in cosmic ray positrons at approximately 8 GeV, observed on both flights of the HEAT balloon experiment, may be associated with the annihilatio…