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Z' Gauge Models from Strings
Jose R. Espinosa
Potentially realistic string models often contain additional abelian gauge factors besides the standard model group. The consequences of such extended gauge structure are manifold…
Cold Dark Matter Candidate in a Class of Supersymmetric Models with an Extra U(1)
B. de Carlos, J. R. Espinosa
In supersymmetric models whose gauge group includes an additional U(1) factor at the TeV scale, broken by the VEV of an standard model singlet S, the parameter space can accommodat…
Intermediate Scales, Mu Parameter, and Fermion Masses from String Models
G. Cleaver, M. Cvetic, J. R. Espinosa +2
We address intermediate scales within a class of string models. The intermediate scales occur due to the SM singlets S_i acquiring non-zero VEVs due to radiative breaking; the mass…
Electroweak Breaking and the mu problem in Supergravity Models with an Additional U(1)
M. Cvetic, D. A. Demir, J. R. Espinosa +2
We consider electroweak symmetry breaking in supersymmetric models with an extra non-anomalous U(1)' gauge symmetry and an extra standard-model singlet scalar S. For appropriate ch…