Inverting the seesaw formula

Details Inverting the seesaw formula Inverting the seesaw formula

2003-05-21

arxiv.org/abs/hep-ph/0305229v2

Phys.Rev. D68 (2003) 033002

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, RevTex4. Few corrections and one reference added

Scientific paper

10.1103/PhysRevD.68.033002

By inverting the seesaw formula we determine the heavy neutrino mass matrix. The impact on the baryogenesis via leptogenesis and the radiative lepton decays in supersymmetric models is described. Links to neutrinoless double beta decay are also briefly discussed. The analysis leads to two distinct matrix models. One has small mixings while the other has one maximal mixing. Both cannot give a sufficient amount of baryon asymmetry. Then we also comment on a different form of the Dirac neutrino mass matrix, which does provide sufficient baryon asymmetry. In a supersymmetric scenario the branching ratios of radiative lepton decays are enhanced for this model.

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