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Article: Investigators at Technical University of Munich target high energy physics.
- Article from:
- Energy Weekly News
- Article date:
- November 6, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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According to a study from Garching, Germany, "Higher-dimensional models of grand unification allow us to relate the top Yukawa coupling y(t) to the gauge coupling g. The tree level relation y(t) = g at the scale of grand unification implies, in the framework of the MSSM, a rather small ratio of Higgs expectation values tan beta. We find that, in the presence of localized Fayet- Iliopoulos terms, y(t) is suppressed against g because the bulk fields acquire non- trivial profiles whose overlap is smaller than in the case of flat profiles."
"This increases the prediction for tan beta to moderately large values. Thus tan beta is related to the geometry of compact ...
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