3 years ago

Lepton number asymmetries and the lower bound on the reheating temperature.

Wan-Il Park, Gabriela Barenboim

We show that the reheating temperature of a matter-domination era in the early universe can be pushed down to the neutrino decoupling temperature at around $2 \ {\rm MeV}$ if the reheating takes place through non-hadronic decays of the dominant matter and neutrino-antineutrino asymmetries are still large enough, $|L| \gtrsim \mathcal{O}(10^{-2})$ (depending on the neutrino flavor) at the end of reheating.

Publisher URL: http://arxiv.org/abs/1708.04899

DOI: arXiv:1708.04899v2

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