Bounds on very low reheating scenarios after Planck
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Fernández de Salas, Pablo; Lattanzi, Massimiliano; Mangano, Gianpiero; Miele, Gennaro; Pastor Carpi, Sergio; Pisanti, Ofelia
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Aquest document és un/a article, creat/da en: 2015
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We consider the case of very low reheating scenarios (TRH∼(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 TRH>4.1 MeV is obtained from Big Bang Nucleosynthesis, while TRH>4.3 MeV from Planck data for very light (∑mi=0.06 eV) neutrinos. If neutrino masses are allowed to vary, Planck data yield TRH>4.7 MeV, 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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