Feebly interacting keV to MeV mass particles in cosmology, astrophysics, and experiment

Who: Josef Pradler (Austrian Academy of Sciences, Vienna)
When: Monday, November 2, 2015 at 14:15
Where: The CP³ meeting room

This talk will highlight some implications of new physics in the keV – MeV mass bracket. A particular focus will be on the framework of primordial nucleosynthesis and how it puts models in this mass range to the test. There, I will also present a new solution to the cosmological lithium problem, one that obeys all other constraints and that is testable in intensity frontier experiments. Finally, astrophysical implications and direct detection prospects of light feebly interacting particles will be discussed in the presence of U(1)’ kinetic mixing with the hypercharge field strength.