Towards the Non-Chiral Extension of SM and MSSM

Details Towards the Non-Chiral Extension of SM and MSSM Towards the Non-Chiral Extension of SM and MSSM

1996-02-26

arxiv.org/abs/hep-ph/9602399v1

Phys.Lett.B376:111-118,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 1 figure

Scientific paper

10.1016/0370-2693(96)00273-0

We show that in some SU(N) type GUTs with the complementary pairs of the conjugated fermion multiplets there naturally appear the relatively light ($M\ll M_{GUT}$) vectorlike fermions which considerably modify the desert physics. In the non-SUSY case they can provide for the unification of the standard coupling constant $\alpha_1$, $\alpha_2$ and $\alpha_S$ whereas in the SUSY case they can increase the unification point up to the string unification limit and decrease $\alpha_S(M_Z)$ down to the value predicted from the low energy physics.

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