Maximal ν μ − ν τ Mixing

Inflation , the μ Problem and Maximal ν μ − ν τ Mixing

Atmospheric neutrino oscillations and maximal ν μ − ν τ mixing in unified models

Atmospheric neutrino oscillations and maximal ν µ − ν τ mixing in unified models Abstract The recent data describing the evidence for neutrino oscillations by Super Kamiokande implies that two neutrinos are very strongly mixed. We ask the question: can approximate maximal neutrino mixing be natural in unified (GUT or string) models? We attempt to answer this question in as much generality as po...

Minimal Schemes for Large Neutrino Mixings with Inverted Hierarchy

Existing oscillation data point to nonzero neutrino masses with large mixings. We analyze the generic features of the neutrino Majorana mass matrix with inverted hierarchy and construct a realistic minimal scheme for the neutrino mass matrix that can explain the large (but not maximal) ν e − ν μ mixing of MSW-LAM as well as the nearly maximal ν μ − ν τ mixing and the small (or negligible) ν e →...

Maximal ν μ − ν τ oscillations , the see - saw mechanism and the Exact Parity Model

Maximal ν µ − ν τ oscillations, the seesaw mechanism and the Exact Parity Model Abstract We examine one simple mechanism which leads to approximate maximal ν µ −ν τ oscillations in the standard seesaw model. In particular, we show that this scheme could be implemented in the Exact Parity Model (also known as the mirror matter model). Within this framework the solar neutrino problem is solved by...

Comment on “ Big Bang Nucleosynthesis and Active - Sterile Neutrino Mixing : Evidence for Maximal ν

The paper " Big Bang Nucleosynthesis and Active-Sterile Neutrino Mixing: Evidence for Maximal ν µ ↔ ν τ Mixing in Super Kamiokande? " by X. Shi and G. M. Fuller (astro-ph/9810075) discusses the cosmological implications of the ν µ → ν s solution to the atmospheric neutrino anomaly. It incorrectly concludes that a lower bound on the ν τ mass of 15 eV is needed in order for the ν µ → ν s oscillat...