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Journal Article

Getting Information on |Ue3|2 from Neutrino-less Double Beta Decay


Merle,  Alexander
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;


Rodejohann,  Werner
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Merle, A., & Rodejohann, W. (2007). Getting Information on |Ue3|2 from Neutrino-less Double Beta Decay. Advances in High Energy Physics, 2007: 82674, pp. 1-15. doi:10.1155/2007/82674.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7ECB-3
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.