Abstract

We investigate possible patterns of SO(10) gauge symmetry breaking compatible with supersymmetry, limiting ourselves to the cases with one intermediate breaking scale. It is found that the one where a 54 representation breaks SO(10) into a Pati-Salam group SU(4) C ×SU(2) L×SU(2) R and the one where a 210 breaks it into SU(3) C × U(1) C ×SU(2) L×SU(2) R are the most preferable patterns when supersymmetry is taken into account. Two models with the Pati-Salam intermediate symmetry are studied in more detail.

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