Journal of High Energy Physics

, 2016:146

Renormalisation group corrections to neutrino mixing sum rules

  • J. Gehrlein
  • S. T. Petcov
  • M. Spinrath
  • A. V. Titov
Open AccessRegular Article - Theoretical Physics

DOI: 10.1007/JHEP11(2016)146

Cite this article as:
Gehrlein, J., Petcov, S.T., Spinrath, M. et al. J. High Energ. Phys. (2016) 2016: 146. doi:10.1007/JHEP11(2016)146
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Abstract

Neutrino mixing sum rules are common to a large class of models based on the (discrete) symmetry approach to lepton flavour. In this approach the neutrino mixing matrix U is assumed to have an underlying approximate symmetry form Ũν, which is dictated by, or associated with, the employed (discrete) symmetry. In such a setup the cosine of the Dirac CP-violating phase δ can be related to the three neutrino mixing angles in terms of a sum rule which depends on the symmetry form of Ũν. We consider five extensively discussed possible symmetry forms of Ũν: i) bimaximal (BM) and ii) tri-bimaximal (TBM) forms, the forms corresponding to iii) golden ratio type A (GRA) mixing, iv) golden ratio type B (GRB) mixing, and v) hexagonal (HG) mixing. For each of these forms we investigate the renormalisation group corrections to the sum rule predictions for δ in the cases of neutrino Majorana mass term generated by the Weinberg (dimension 5) operator added to i) the Standard Model, and ii) the minimal SUSY extension of the Standard Model.

Keywords

CP violation Neutrino Physics Renormalization Group Discrete Symmetries 
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© The Author(s) 2016

Authors and Affiliations

  • J. Gehrlein
    • 1
  • S. T. Petcov
    • 2
    • 3
    • 4
  • M. Spinrath
    • 1
  • A. V. Titov
    • 2
  1. 1.Institut für Theoretische Teilchenphysik, Karlsruhe Institute of TechnologyKarlsruheGermany
  2. 2.SISSA/INFNTriesteItaly
  3. 3.Kavli IPMU (WPI)University of TokyoKashiwaJapan
  4. 4.Institute of Nuclear Research and Nuclear EnergyBulgarian Academy of SciencesSofiaBulgaria