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mitchell porter
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https://arxiv.org/abs/1810.01000
MiniBooNE, MINOS+ and IceCube data imply a baroque neutrino sector
Jiajun Liao, Danny Marfatia, Kerry Whisnant
(Submitted on 1 Oct 2018)
The 4.8σ anomaly in MiniBooNE data cannot be reconciled with MINOS+ and IceCube data within the vanilla framework of neutrino oscillations involving an eV-mass sterile neutrino. We show that a consistent picture can be drawn if charged-current and neutral-current nonstandard neutrino interactions are at work in the 3+1 neutrino scheme. It appears that either the neutrino sector is more elaborate than usually envisioned, or one or more datasets needs revision.
This paper discusses the hypothetical new interactions only at the effective level (eqns 1 & 2) and doesn't say anything about what the underlying physics might be. However, via their ref 13, I have become aware of the "Zee-Babu model", which produces neutrino mass, not with right-handed neutrinos, but with two new scalars, of charge +1 and +2. Apparently this also contains the two kinds of nonstandard interaction required.
But since this paper is about extending the "3+1 neutrino scheme", it seems that we would be talking about three left-handed neutrinos, three right-handed neutrinos, a 1 eV sterile neutrino, and the two Zee-Babu scalars. Well, they did call it baroque...
MiniBooNE, MINOS+ and IceCube data imply a baroque neutrino sector
Jiajun Liao, Danny Marfatia, Kerry Whisnant
(Submitted on 1 Oct 2018)
The 4.8σ anomaly in MiniBooNE data cannot be reconciled with MINOS+ and IceCube data within the vanilla framework of neutrino oscillations involving an eV-mass sterile neutrino. We show that a consistent picture can be drawn if charged-current and neutral-current nonstandard neutrino interactions are at work in the 3+1 neutrino scheme. It appears that either the neutrino sector is more elaborate than usually envisioned, or one or more datasets needs revision.
This paper discusses the hypothetical new interactions only at the effective level (eqns 1 & 2) and doesn't say anything about what the underlying physics might be. However, via their ref 13, I have become aware of the "Zee-Babu model", which produces neutrino mass, not with right-handed neutrinos, but with two new scalars, of charge +1 and +2. Apparently this also contains the two kinds of nonstandard interaction required.
But since this paper is about extending the "3+1 neutrino scheme", it seems that we would be talking about three left-handed neutrinos, three right-handed neutrinos, a 1 eV sterile neutrino, and the two Zee-Babu scalars. Well, they did call it baroque...