Supersymmetric Models with a Gauge Singlet and Non-Universal Soft Terms from Orbifold String Theory

Details Supersymmetric Models with a Gauge Singlet and Non-Universal Soft Terms from Orbifold String Theory Supersymmetric Models with a Gauge Singlet and Non-Universal Soft Terms from Orbifold String Theory

1994-11-25

arxiv.org/abs/hep-ph/9411397v1

Phys.Lett.B347:269-278,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, uuencoded ps-file

Scientific paper

10.1016/0370-2693(95)00089-4

The particle spectrum of the supersymmetric extension of the standard model with a gauge singlet is studied. Soft supersymmetry breaking terms are explicitly chosen to be non-universal according to orbifold string theory. they depend on modular weights of chiral fields and on an angle $\theta$ specifying the supersymmetry breaking sector. Imposing radiative weak symmetry breaking and requiring that standard model Yukawa couplings should be allowed yield constraints on modular weights and almost specifies the angle $\theta$. We then perform a numerical anlysis of the low energy spectrum. It turns out that the spectrum is very constrained, revealing salient features such as light Higgses and neutralinos. The latter turns out to be essentially gaugino-like.

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