Realistic Supersymmetric SU(6)

Details Realistic Supersymmetric SU(6) Realistic Supersymmetric SU(6)

2001-05-15

arxiv.org/abs/hep-ph/0105140v1

Phys.Lett.B522:102-106,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, one eps figure

Scientific paper

10.1016/S0370-2693(01)01255-2

We present an example of SUSY SU(6) GUT, which predicts an excellent value for $\al_s(M_Z)(\simeq 0.119)$, in comparison with the value $\al_s^0(M_Z)\simeq 0.126$ of minimal SUSY SU(5). A crucial role is played by the vectorlike multiplets from the matter sector, whose masses lie below the GUT scale. For a realistic pattern of fermion masses, the adjoint scalar of SU(6) has VEV along the $SU(4)\times SU(2)\times U(1)$ direction. This also offers a natural resolution of the doublet-triplet (DT) splitting through the pseudo Goldstone Boson mechanism.

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