We consider the case of very low reheating scenarios T_RH ~O(MeV) with a better calculation of the production of the relic neutrino background (with three-flavor oscillations). At 95% confidence level, a lower bound on the reheating temperature T_RH > 4.1 MeV is obtained from big bang nucleosynthesis, while T_RH > 4.7 MeV from Planck data (allowing neutrino masses to vary), the most stringent bound on the reheating temperature to date. Neutrino masses as large as 1 eV are possible for very low reheating temperatures.

Bounds on very low reheating scenarios after Planck

Mangano, G.;MIELE, GENNARO;PISANTI, OFELIA
2015

Abstract

We consider the case of very low reheating scenarios T_RH ~O(MeV) with a better calculation of the production of the relic neutrino background (with three-flavor oscillations). At 95% confidence level, a lower bound on the reheating temperature T_RH > 4.1 MeV is obtained from big bang nucleosynthesis, while T_RH > 4.7 MeV from Planck data (allowing neutrino masses to vary), the most stringent bound on the reheating temperature to date. Neutrino masses as large as 1 eV are possible for very low reheating temperatures.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/615691
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