"SEESAWING" AWAY THE HEIRARCHY PROBLEM.
Conference
·
OSTI ID:875880
We describe a model for the scalar sector where all interactions occur either at an ultra-high scale A{sub U} {approx} 10{sup 16}-10{sup 19} GeV or at an intermediate scale {Lambda}{sub I} = 10{sup 9}-10{sup 11} GeV. The interaction of physics on these two scales results in an SU(2) Higgs condensate at the electroweak (EW) scale, {Lambda}{sub EW}, through a seesaw-like Higgs mechanism, {Lambda}{sub EW} {approx} {Lambda}{sub 1}{sup 2}/{Lambda}{sub U}, while the breaking of the SM SU(2) x U(1) gauge symmetry occurs at the intermediate scale {Lambda}{sub I}. The EW scale is, therefore, not fundamental but is naturally generated in terms of ultra-high energy phenomena and so the hierarchy problem is alleviated. We show that our ''seesaw-Higgs'' model predicts the existence of sub-eV neutrino masses which are generated through a ''two-step'' seesaw mechanism in terms of the same two ultra-high scales: m{sub {nu}} {approx} {Lambda}{sub I}{sup 4}/{Lambda}{sub U}{sup 3} {approx} {Lambda}{sub EW}{sup 2}/{Lambda}{sub U}. We also show that our seesaw Higgs model can be naturally embedded, in theories with tiny extra dimensions of size R {approx} {Lambda}{sub U}{sup -1} {approx} 10{sup -16} fm, where the seesaw induced EW scale arises from a violation of a symmetry at a distant brane if there are 7 tiny extra dimensions.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY
- Sponsoring Organization:
- DOE/SC
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 875880
- Report Number(s):
- BNL--75366-2006-CP; KA1401020
- Country of Publication:
- United States
- Language:
- English
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