Global Analysis of Neutrino Data

Abstract

In this talk I review the present status of neutrino masses and mixing and some of their implications for particle physics phenomenology. I first discuss the minimum extension of the Standard Model of particle physics required to accommodate neutrino masses and introduce the new parameters present in the model and in particular the possibility of leptonic mixing. I then describe the phenomenology of neutrino masses and mixing leading to flavour oscillations and present the existing evidence from solar, reactor, atmospheric and long-baseline neutrinos as well as the results from laboratory searches at short distances. I derive the allowed ranges for the mass and mixing parameters when the bulk of data is consistently analyzed in the framework of mixing between the three active neutrinos and obtain as a result the most up-to-date determination of the leptonic mixing matrix. Then I briefly summarize the status of some proposed phenomenological explanations to accommodate the LSND results: the role of sterile neutrinos and the violation of CPT. Finally I comment how within the present experimental precision it is possible to use the observation of oscillation patterns to impose severe constraints on the possible violation of fundamental symmetries in particle physics such as Lorentz invariance or the weak equivalence principle.

Talk given at the Nobel Symposium on Neutrino Physics, Haga Slott, Enkoping, Sweden

References in corpus (4)

• Status of the CPT Violating Interpretations of the LSND Signal
• Theoretical Prospects of Neutrinoless Double Beta Decay
• Cosmological neutrino bounds for non-cosmologists
• Sudbury Neutrino Observatory Results

Cited by in corpus (26)

• Theory of Neutrinos: A White Paper
• Flavour physics of leptons and dipole moments
• Unitarity of the Leptonic Mixing Matrix
• Physics at a future Neutrino Factory and super-beam facility
• Total neutrino and antineutrino nuclear cross sections around 1 GeV
• Phenomenology of the triplet seesaw mechanism with Gauge and Yukawa mediation of SUSY breaking
• TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
• The Seesaw Mechanism in Quark-Lepton Complementarity
• theta_C from the Dihedral Flavor Symmetries D_7 and D_14
• Extra galactic sources of high energy neutrinos
• Constraints on Unparticle Physics from Solar and KamLAND Neutrinos
• WMAP Dark Matter Constraints on Yukawa Unification with Massive Neutrinos
• On the origin of families of quarks and leptons - predictions for four families
• Neutrino Flux from Cosmic Ray Accelerators in the Cygnus Spiral Arm of the Galaxy
• Spontaneous Symmetry Breaking as a Basis of Particle Mass
• Supersymmetric Grand Unification and Lepton Universality in K-> l νDecays
• Searching for New Physics in Future Neutrino Factory Experiments
• CP and Lepton-Number Violation in GUT Neutrino Models with Abelian Flavour Symmetries
• Three-flavour effects and CP- and T-violation in neutrino oscillations
• Impact of right-handed interactions on the propagation of Dirac and Majorana neutrinos in matter
• Suppression of Lepton Flavour Violation from Quantum Corrections above $M_{GUT}$
• Majorana neutrino textures from numerical considerations: the CP conserving case
• Triangular mass matrices for quarks and leptons
• Future Precision Neutrino Oscillation Experiments and Theoretical Implications
• Fermion masses and neutrino mixing in an U(1)_H flavor symmetry model with hierarchical radiative generation for light charged fermion masses
• CP nonconservation in the leptonic sector