Is Zee Model The Model of Neutrino Masses?

Abstract

Zee model leads naturally to two heavy, strongly degenerate and almost maximally mixed neutrinos and to one light neutrino with small mixing. This pattern coincides with the one needed for a solution of the atmospheric neutrino problem by $\n_\m\A \n_τ$ oscillations and for existence of the two component hot dark matter in the Universe. Furthermore, the oscillations $\bar\n_\m\A \bar\n_e$ can be in the range of sensitivity of KARMEN, LSND experiments. Phenomenology of this scenario is considered and possibility to check it in the forthcoming experiments is discussed. Scenario implies large values and inverse flavour hierarchy of the couplings of the Zee boson with fermions: $f_{e\tau }\ll f_{\mu \tau }\le f_{e\mu }\sim 0.1$. Main signatures of scenario are: strongly suppressed signal of $\n_\m\A \n_τ$ oscillation in CHORUS and NOMAD experiments, so that positive result from these experiments will rule out the scenario; possibility of observation of $\n_e\A \n_τ$ oscillations by CHORUS and NOMAD; corrections to the muon decay, neutrino-electron scattering at the level of the experimental errors; branching ratio $B(μ\A e γ)$ bigger than $10^{-13}$. The solar neutrino problem can be solved by introduction of additional very light singlet fermion without appreciable changes of the active neutrino pattern.

19 pages, latex, 6 figures available upon request from the author by fax

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Cited by in corpus (72)

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• The low-scale approach to neutrino masses
• Zee Mass Matrix and Bi-Maximal Neutrino Mixing
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• Oscillation enhanced search for new interaction with neutrinos
• Two-Loop Neutrino Mass Generation through Leptoquarks
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• Long-baseline neutrino oscillation experiments and CP violation in the lepton sector
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• On the Origin of Neutrino Masses
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• Full parameter scan of the Zee model: exploring Higgs lepton flavor violation
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• Matter Effects in Four-Neutrino Mixing
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• Radiative neutrino mass matrix for three active plus one sterile species
• Radiatively Induced Neutrino Majorana Masses and Oscillation
• Phenomenology of Higgs bosons in the Zee-Model
• Renormalizable SU(5) Unification
• Four-Neutrino Mixing and Big-Bang Nucleosynthesis
• Two-loop Radiative Neutrino Mechanism in an $SU(3{)}_L\times U(1{)}_N$ Gauge Model
• Large Mixing Angle MSW Solution in an SU(3)_LxU(1)_N Gauge Model with Two-loop Radiative Mechanism
• Bimaximal Neutrino Mixing in a Zee-type Model with Badly Broken Flavor Symmetry
• Three Neutrino $\Delta m^2$ scales and Singular Seesaw Mechanism
• New Paradigm for Baryon and Lepton Number Violation
• Neutrinoless double-beta decay with three or four neutrino mixing
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• Neutrino-Lepton Masses, Zee Scalars and Muon g-2
• Viability of bi-maximal solution of the Zee mass matrix
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• Constraints on long-baseline neutrino oscillation probabilities and CP asymmetries from neutrino oscillation data
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• Predictive Model of Radiative Neutrino Masses
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• Neutrino Masses in Supersymmetry: R-Parity and Leptogenesis
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