Radiative Symmetry Breaking in Brane Models

Abstract

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.

16 pages, Latex2e, 2 eps figures. Some comments on the large (longitudinal) radius limit of the mass term at the origin are developed, and new references added

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• Warping the Weak Gravity Conjecture
• Supersymmetry breaking on orbifolds from Wilson lines
• Supersymmetry and Finite Radiative Electroweak Breaking from an Extra Dimension
• Radiative brane-mass terms in D>5 orbifold gauge theories
• Localized anomalies in orbifold gauge theories
• Two-loop Higgs mass in supersymmetric Kaluza-Klein theories
• Higgs-gauge unification without tadpoles
• One-loop Higgs mass finiteness in supersymmetric Kaluza-Klein theories
• Tadpole Resummations in String Theory
• Soft electroweak breaking from hard supersymmetry breaking
• Effective Potential and KK-Renormalization Scheme in a 5D Supersymmetric Theory
• The Physics of Extra Dimensions
• Mass corrections in string theory and lattice field theory
• Loop-Effects in Pseudo-Supersymmetry
• Models for Geometric CP Violation with Extra Dimensions
• A closer look at string resonances in dijet events at the LHC
• Newton versus Coulomb for Kaluza-Klein modes
• Radiative Symmetry Breaking on D-branes at Non-supersymmetric Singularities
• Spontaneous Gauge Symmetry Breaking in a Non-Supersymmetric D-brane Model
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• Box Compactification and Supersymmetry Breaking
• The lightest Higgs boson mass in effective field theory with bulk and brane supersymmetry breaking
• Dynamical Electroweak Symmetry Breaking in String Models with D-branes
• Noncommutative 6D Gauge Higgs Unification Models
• Gauge Symmetry Restoration by Higgs Condensation in Flux Compactifications on Coset Spaces
• Stringy Threshold Corrections in D-brane Systems
• Anomalous U(1)_A and Electroweak Symmetry Breaking