ausblenden:
Schlagwörter:
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Zusammenfassung:
We consider the possibility to gain information
on the lepton mixing matrix element |U(e3)| from an
improved experimental limit on the effective neutrino
mass governing neutrino-less double beta decay. We show
that typically a lower limit on |U(e3)| can be set.
Furthermore, we give the values of the sum of neutrino
masses and |U(e3)| which are allowed and forbidden by
an experimental upper limit on the effective mass.
Alternative explanations for neutrino-less double
beta decay or Dirac neutrinos would be required if
future measurements showed that the values lie in
the respective regions. Moreover, we argue that a
measurement of |U(e3)| from neutrino-less double
beta decay is very difficult due to the expected
errors on the effective mass and the oscillation parameters.
