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Journal Article

Reducing θ13 to 9°

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons30951

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

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

Fulltext (public)

1402.2226.pdf
(Preprint), 7MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Rodejohann, W., & Zhang, H. (2014). Reducing θ13 to 9°. Physics Letters B, 732, 174-181. doi:10.1016/j.physletb.2014.03.040.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-02E8-C
Abstract
We propose to consider the possibility that the observed value of θ13 is not the result of a correction from an initially vanishing value, but rather the result of a correction from an initially larger value. As an explicit example of this approach, we consider analytically and numerically well-known CKM-like charged lepton corrections to a neutrino diagonalization matrix that corresponds to a certain mixing scheme. Usually this results in generating θ13= 9° from zero. We note here, however, that 9 is not only given by 0 + 9, but also by 18 - 9. Hence, the extreme case of an initial value of 18 degrees, reduced by charged lepton corrections to 9 degrees, is possible. For some cases under study new sum rules for the mixing parameters, and correlations with CP phases are found.