Neutrino Physics: Open Theoretical Questions

Abstract

We know that neutrino mass and mixing provide a window to physics beyond the Standard Model. Now this window is open, at least partly. And the questions are: what do we see, which kind of new physics, and how far "beyond"? I summarize the present knowledge of neutrino mass and mixing, and then formulate the main open questions. Following the bottom-up approach, properties of the neutrino mass matrix are considered. Then different possible ways to uncover the underlying physics are discussed. Some results along the line of: see-saw, GUT and SUSY GUT are reviewed.

17 pages, latex, 12 figures. Talk given at the XXI International Symposium on Lepton and Photon Interactions at High Energies, ``Lepton Photon 2003", August 11-16, 2003 - Fermilab, Batavia, IL USA

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Cited by in corpus (25)

• Theory of Neutrinos: A White Paper
• Fermion masses in SUSY SO(10) with type II seesaw: a non-minimal predictive scenario
• Model Predictions for Neutrino Oscillation Parameters
• SO(10) Symmetry Breaking and Type II Seesaw
• Fermion Masses and Flavor Mixing in A Supersymmetric SO(10) Model
• An SO(10) GUT Model With Lopsided Mass Matrix and Neutrino Mixing Angle theta_13
• Scalar sextet in the 331 model with right-handed neutrinos
• First quantized approaches to neutrino oscillations and second quantization
• Neutrino Masses in the Effective Rank-5 Subgroups of E_6 I: Non-supersymmetric Case
• Neutrino Oscillations in the Early Universe: A Real Time Formulation
• On Power and Complementarity of the Experimental Constraints on Seesaw Models
• Low scale gravity as the source of neutrino masses?
• Leptogenesis in Realistic SO(10) Models
• Lepton Flavor Violation in Predictive Supersymmetric GUT Models
• Double Suppression of FCNCs in Supersymmetric Models
• Bilarge neutrino mixing in R-parity violating supersymmetry: the role of right-chiral neutrino superfields
• (3+2) Neutrino Scheme From A Singular Double See-Saw Mechanism
• Predictions from non trivial Quark-Lepton complementarity
• Intrinsic flavor violation for massive neutrinos
• Remark on Natural Models of Neutrinos
• Bi-large Neutrino Mixing and Mass of the Lightest Neutrino from Third Generation Dominance in a Democratic Approach
• Dynamical CP Violation in the Early Universe and Leptogenesis
• Quark-Lepton Complementarity Predictions for ${\theta }_{23}^{pmns}$ and CP Violation
• Inverted neutrino mass hierarchies from U(1) symmetries
• Bi-Large Neutrino Mixing See-Saw Mass Matrix with Texture Zeros and Leptogenesis