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Neutrino mass anarchy

Hall1, Murayama, Weiner

  • 1Department of Physics, University of California, Berkeley, California 94720 and and Theory Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

Physical Review Letters
|October 4, 2000
PubMed
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The neutrino mass matrix, governing neutrino oscillations, may not follow a regulated pattern. Data analysis suggests that a matrix with seemingly random entries can accurately explain observed neutrino behavior.

Area of Science:

  • Particle Physics
  • Neutrino Physics

Background:

  • Neutrino oscillations are governed by the neutrino mass matrix.
  • Current models often assume an ordered, regulated pattern for this matrix, potentially due to flavor symmetry.

Purpose of the Study:

  • To investigate the form of the neutrino mass matrix responsible for atmospheric and solar neutrino oscillations.
  • To challenge the dominant viewpoint of an ordered neutrino mass matrix.

Main Methods:

  • Analysis of atmospheric and solar neutrino oscillation data.
  • Comparison of data with predictions from matrices featuring random entries versus ordered patterns.

Main Results:

  • The study demonstrates that data are well accounted for by a neutrino mass matrix with seemingly random entries.

Related Experiment Videos

  • This finding challenges the prevailing assumption of a regulated or symmetric mass matrix structure.

    • Conclusions:

    • A neutrino mass matrix with random entries can effectively explain observed neutrino oscillation phenomena.
    • The assumption of flavor symmetry dictating an ordered matrix may not be necessary.