Possible Revelation of Seesaw Mass Pattern in Solar and Atmospheric Neutrino Data

Abstract

Assuming the solar and atmospheric neutrino deficits to be due to neutrino oscillations, it is shown that the 3X3 mass matrix spanning the e, mu, and tau neutrinos may have already revealed a seesaw mass pattern. Also, this matrix is the natural reduction of a simple 5X5 seesaw mass matrix with one large scale, the 4X4 reduction of which predicts that a fourth neutrino would mix with the e and mu neutrinos in such a way that oscillations between them may occur just within the detection capability of the LSND (Liquid Scintillator Neutrino Detector) experiment.

10 pages (4 figures not included)

References in corpus (4)

• Constraints on Neutrino Oscillations from Big Bang Nucleosynethesis
• Implication of Combined Solar Neutrino Observation and their Theoretical Uncertainties
• Constraints on Three-Neutrino Mixing from Atmospheric and Reactor Data
• Solar Neutrinos with Three Flavor Mixings

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• Cosmological Nucleosynthesis and Active-Sterile Neutrino Oscillations with Small Mass Differences: The Nonresonant Case
• Cosmological nucleosynthesis and active-sterile neutrino oscillations with small mass differences: The resonant case
• Four species neutrino oscillations at $\nu$-Factory: sensitivity and CP-violation
• Limits on Active-Sterile Neutrino Mixing and the Primordial Deuterium Abundance
• Can R-parity violation explain the LSND data as well?
• Three-generation neutrino mixing and LSND dark matter neutrinos
• Neutrino Oscillations from Dirac and Majorana Masses