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Left-Right Gauge Symmetry at the TeV Energy Scale
Ernest Ma
Two first examples beyond the standard model are given which exhibit left-right symmetry (g_L = g_R) and supersymmetry at a few TeV, together with gauge-coupling unification at aro…
Two-Doublet Higgs Structure at the Electroweak Energy Scale
Ernest Ma
The existence of supersymmetry above a few TeV and that of two Higgs doublets at the electroweak energy scale do not necessarily result in the minimal supersymmetric standard model…
Heavy Tau Neutrino as the Late Decaying Particle in the Cold Dark Matter Scenario
Hisashi Kikuchi, Ernest Ma
The tau neutrino with a mass of about 10 MeV can be the ``late decaying particle'' in the cold dark matter scenario for the formation of structure in the Universe. We show how this…
Scalar Mass Bounds in Two Supersymmetric Extended Electroweak Gauge Models
T. V. Duong, Ernest Ma
In two recently proposed supersymmetric extended electroweak gauge models, the reduced Higgs sector at the 100-GeV energy scale consists of only two doublets, but they have quartic…
Unifiable Supersymmetric Left-Right Model with E_6 Particle Content
Ernest Ma
A new supersymmetric gauge model is proposed with particle content chosen only from the 27 and 27* representations of E_6. The gauge symmetry SU(3) X SU(2)_L X SU(2)_R X U(1) is re…
Neutrino Decay in the Doublet Majoron Model
Hisashi Kikuchi, Ernest Ma
A new Majoron model is presented within the framework of the seesaw mechanism. Its Higgs sector consists of only doublet representations and the lepton-number violation takes place…