TY  - JOUR
AU  - Barenboim, G.
AU  - Kinney, W. H.
AU  - Park, W. I.
PY  - 2017
DA  - 2017//
TI  - Flavor versus mass eigenstates in neutrino asymmetries: implications for cosmology
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 590
EP  - 7pp
VL  - 77
IS  - 9
PB  - Springer
AB  - We show that, if they exist, lepton number asymmetries (L-alpha) of neutrino flavors should be distinguished from the ones (L-i) 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 L-i for a specific case is presented as an illustration.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1609.03200
UR  - https://doi.org/10.1140/epjc/s10052-017-5147-4
DO  - 10.1140/epjc/s10052-017-5147-4
LA  - English
N1  - WOS:000410888500004
ID  - Barenboim_etal2017
ER  -