PoS - Proceedings of Science
Volume 441 - XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP2023) - Neutrino Physics and Astrophysics
Neutrino decoupling in standard and non-standard scenarios
P. Martínez Miravé
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Pre-published on: March 19, 2024
Published on: March 22, 2024
We discuss the phenomenology of neutrino decoupling in the early universe in standard and non-standard scenarios. We review how the effective number of neutrino species in the early universe (N$_{\rm eff}$) is calculated in the three-neutrino case, which gives Neff=3.044, and show how this result can change when one considers non-standard properties such as non-standard interactions between neutrinos and electrons and a non-unitary three-neutrino mixing matrix.
DOI: https://doi.org/10.22323/1.441.0245
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