Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-04-10
Nucl.Phys. B583 (2000) 35-48
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, Latex2e, 2 eps figures. Some comments on the large (longitudinal) radius limit of the mass term at the origin are de
Scientific paper
10.1016/S0550-3213(00)00357-6
We propose a way to generate the electroweak symmetry breaking radiatively in non-supersymmetric type I models with string scale in the TeV region. By identifying the Higgs field with a tree-level massless open string state, we find that a negative squared mass term can be generated at one loop. It is finite, computable and typically a loop factor smaller than the string scale, that acts as an ultraviolet cutoff in the effective field theory. When the Higgs open string has both ends confined on our world brane, its mass is predicted to be around 120 GeV, i.e. that of the lightest Higgs in the minimal supersymmetric model for large $\tan\beta$ and $m_A$. Moreover, the string scale turns out to be one to two orders of magnitude higher than the weak scale. We also discuss possible effects of higher order string threshold corrections that might increase the string scale and the Higgs mass.
Antoniadis Ignatios
Benakli Karim
Quiros Mariano
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