The Weinberg Angle Without Grand Unification

Details The Weinberg Angle Without Grand Unification The Weinberg Angle Without Grand Unification

1993-06-12

arxiv.org/abs/hep-ph/9306268v1

Phys.Rev.D48:2995-2997,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, TU-438

Scientific paper

10.1103/PhysRevD.48.R2995

We assume that strong and electroweak interactions become strong at very high energies. With this assumption, we compute the low-energy gauge coupling constants $\alpha_i (m_Z)$ as a function of the cutoff scale, taking the supersymmetric standard model with $3+2n$ families of quark and lepton multiplets. We find that only the five family case $(n=1)$ is consistent with the experimental values of the gauge coupling constants. This suggests the presence of a pair of families at $\sim 1$~TeV.

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