Absolute Neutrino Mass and Mass Ordering
Problem statement
Neutrino oscillations fix the mass-squared differences $\Delta m^2_{ij}$ but not the absolute scale or the sign of $\Delta m^2_{31}$.
What are the absolute neutrino masses, is the ordering normal or inverted, and are neutrinos Dirac or Majorana particles? Neutrinoless double-beta decay would settle the Majorana question.
Claims (1)
Discussion (1)
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Worth noting the numerical evidence in recent lattice studies.