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Soft Scalar Masses in String Models with Anomalous U(1) symmetry
We obtain the low-energy effective theory from string models with anomalous U(1) symmetry. The feature of soft supersymmetry breaking scalar masses and some phenomenological implications areExpand
Z7 orbifold models
Abstract We give the general classification of the Z 7 orbifold models with an abelian embedding.
Generic formula of soft scalar masses in string models
We derive formula of soft supersymmetry breaking scalar masses from 4-dimensional string models within a more generic framework. We consider effects of extra gauge symmetry breakings including anExpand
Gauge Symmetry Reduction from the Extra Space S1/Z2
We study a mechanism of symmetry transition upon compactification of a 5-dimensional field theory on $S^1/Z_2$. The transition occurs unless all components in a multiplet of a symmetry group have aExpand
Triplet-Doublet Splitting, Proton Stability and an Extra Dimension.
We propose a new possibility to reconcile the coupling unification scenario with the triplet-doublet mass splitting based on a 5-dimensional supersymmetric model with SU(5) gauge symmetry. It isExpand
Soft Scalar-Mass Sum Rule in Gauge-Yukawa Unified Models and Its Superstring Interpretation
Abstract It is shown that a certain sum rule for soft supersymmetry-breaking scalar masses, which has been recently found in a certain class of superstring models, is universal for gauge-YukawaExpand
Specific scalar mass relations in SU(3) × SU(2) × U(1) orbifold model
Abstract We study flat directions and soft scalar masses using a Z3 orbifold model with SU(3) × SU(2) × U(1) gauge group and extra gauge symmetries including an anomalous U(1) symmetry. Soft scalarExpand
Gauge Groups of ZN Orbifold Models
Z_N orbifold models which have N=1 space-time supersymmetry are cxamined. All gauge groups of Z_N orbifold models are classified completely.
Gauge symmetry breaking from extra space $S^1/Z_2$
We study a mechanism of symmetry transition upon compactification of 5-dimensional field theory on S/Z2. The transition happens unless all components in a multiplet of a symmetry group have a commonExpand
Probing the symmetry-breaking pattern using sfermion masses
Abstract We study the mass spectrum of superparticles within supersymmetric grand unified models. For gaugino masses, it is pointed out that the GUT relation in the SU (5) model is applicable to aExpand
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