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- W4301354771 abstract "We consider a sterile neutrino to be an unparticle, namely an unsterile neutrino, and study its mixing with a canonical active neutrino via a see-saw mass matrix. There is no unitary transformation that diagonalizes the mixed propagator and a field redefinition is required. The unsterile-like propagating mode features a resonance for anomalous dimension between 0 and 1/3, but the complex pole disappears when the anomalous dimension is larger than 1/3. The active-like propagating mode is described by a stable pole, but inherits a non-vanishing spectral density above the unparticle threshold. We also find that the radiative decay width of the unsterile neutrino into the active neutrino (and a photon) via charged current loops is suppressed, and this suppression weakens the bound from the X-ray or soft gamma-ray background when one considers the unsterile neutrino to be a dark matter candidate." @default.
- W4301354771 created "2022-10-05" @default.
- W4301354771 creator A5000694292 @default.
- W4301354771 date "2010-04-15" @default.
- W4301354771 modified "2023-09-27" @default.
- W4301354771 title "Unsterile-Active Neutrino Mixing" @default.
- W4301354771 doi "https://doi.org/10.48550/arxiv.1004.2705" @default.
- W4301354771 hasPublicationYear "2010" @default.
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