5 research outputs found
Unification of SUSY breaking and GUT breaking
We build explicit supersymmetric unification models where grand unified gauge
symmetry breaking and supersymmetry (SUSY) breaking are caused by the same
sector. Besides, the SM-charged particles are also predicted by the symmetry
breaking sector, and they give the soft SUSY breaking terms through the
so-called gauge mediation. We investigate the mass spectrums in an explicit
model with SU(5) and additional gauge groups, and discuss its phenomenological
aspects. Especially, nonzero A-term and B-term are generated at one-loop level
according to the mediation via the vector superfields, so that the electro-weak
symmetry breaking and 125 GeV Higgs mass may be achieved by the large B-term
and A-term even if the stop mass is around 1 TeV.Comment: 27 pages, 8 figures, revised some figures, added references and
discussions, accepted for publication in JHE
Models of Neutrino Masses and Mixings
We review theoretical ideas, problems and implications of neutrino masses and
mixing angles. We give a general discussion of schemes with three light
neutrinos. Several specific examples are analyzed in some detail, particularly
those that can be embedded into grand unified theories.Comment: 44 pages, 2 figures, version accepted for publication on the Focus
Issue on 'Neutrino Physics' edited by F.Halzen, M.Lindner and A. Suzuki, to
be published in New Journal of Physics