Présidents de session
Parallel II: Dark matter models II
- Cédric Delaunay
Self-interacting dark matter is a promising candidate for solving the small-scale problems in the standard model of cosmology. A natural consequence of having self-interactions among dark matter particles is the Sommerfeld effect which can affect both the annihilation and self-scattering rates of dark matter particles. I shall show that as a result of the Sommerfeld effect, caused by a...
In the first stages of inflationary reheating, the temperature of the radiation produced by inflaton decays is higher than the commonly defined reheating temperature $T_R$. At these temperatures particle production can be significantly enhanced. Furthermore, in the earliest stages of reheating, before thermalization takes place, scattering of the inflaton decay products with momenta comparable...
Having no new physics signals observed at collider experiments, we are motivated to consider a scenario that the new physics scale is higher than the current collider energies but still within the reach of the cosmic ray experiments covering beyond TeV scale. In particular, we focus on the types of new physics interactions accompanying with high multiplicities in their signals from the...
