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Título

Flavor versus mass eigenstates in neutrino asymmetries: implications for cosmology

Fecha de publicación 7-sep-2017
EditorSpringer
ResumenWe show that, if they exist, lepton number asymmetries ( Lα ) of neutrino flavors should be distinguished from the ones ( Li ) of mass eigenstates, since Big Bang Nucleosynthesis (BBN) bounds on the flavor eigenstates cannot be directly applied to the mass eigenstates. Similarly, Cosmic Microwave Background (CMB) constraints on the mass eigenstates do not directly constrain flavor asymmetries. Due to the difference of mass and flavor eigenstates, the cosmological constraint on the asymmetries of neutrino flavors can be much stronger than the conventional expectation, but they are not uniquely determined unless at least the asymmetry of the heaviest neutrino is well constrained. The cosmological constraint on Li for a specific case is presented as an illustration. Springer
URI http://hdl.handle.net/10261/154929
DOI10.1140/epjc/s10052-017-5147-4
ISSN1434-6052
Aparece en las colecciones: Sponsoring Consortium for Open Access Publishing in Particle Physics - SCOAP3
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