Mixing Renormalization in Majorana Neutrino Theories

Details Mixing Renormalization in Majorana Neutrino Theories Mixing Renormalization in Majorana Neutrino Theories

1996-01-31

arxiv.org/abs/hep-ph/9601390v1

Nucl.Phys. B474 (1996) 286-308

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages (3 figures included), LaTeX

Scientific paper

10.1016/0550-3213(96)00280-5

The renormalization of general theories with inter-family mixing of Dirac and/or Majorana fermions is studied at the one-loop electroweak order. The phenomenological significance of the mixing-matrix renormalization is discussed, within the context of models based on the SU(2)_L x U(1)_Y gauge group. The effect of radiative neutrino masses present in these models is naturally taken into account in this formulation. As an example, charged-lepton universality in pion decays is investigated in the heavy- neutrino limit. Non-decoupling heavy-neutrino effects induced by mixing renormalization are found to considerably affect the predictions in these new-physics scenarios.

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