Speaker
Vivian Poulin
(Unite Reseaux du CNRS (FR))
Description
After a recap of the standard e.m. cascade theory, I will discuss a loophole
that can have a large effect in the early universe, notably in altering
primordial nucleosynthesis bounds on electromagnetically decaying relic particles.
I will finally show how this may greatly simplify the possibility to address
the long-standing "lithium problem" in terms of new physics models, and solve it explicitely with a proof-of-principle particle physics model, namely the sterile neutrino.
Author
Vivian Poulin
(Unite Reseaux du CNRS (FR))
Co-author
Pasquale Serpico
(Unite Reseaux du CNRS (FR))
