Running Neutrino Mass Parameters in See-Saw Scenarios

Details Running Neutrino Mass Parameters in See-Saw Scenarios Running Neutrino Mass Parameters in See-Saw Scenarios

2005-01-31

arxiv.org/abs/hep-ph/0501272v3

JHEP 0503:024,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

49 pages, 9 figures; minor corrections in Sec. 6.5.1; the accompanying software packages REAP/MPT can be downloaded from htt

Scientific paper

10.1088/1126-6708/2005/03/024

We systematically analyze quantum corrections in see-saw scenarios, including effects from above the see-saw scales. We derive approximate renormalization group equations for neutrino masses, lepton mixings and CP phases, yielding an analytic understanding and a simple estimate of the size of the effects. Even for hierarchical masses, they often exceed the precision of future experiments. Furthermore, we provide a software package allowing for a convenient numerical renormalization group analysis, with heavy singlets being integrated out successively at their mass thresholds. We also discuss applications to model building and related topics.

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