Missing partner mechanism in SO(10) grand unification

• DOI: 10.1016/j.physletb.2007.02.050
• Publication Date: 2007-03-01T21:29:54Z
• Authors: K.S. Babu; I. Gogoladze; Z. Tavartkiladze
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); 0103 physical sciences; FOS: Physical sciences; 7. Clean energy; 01 natural sciences

We present a new possibility for achieving doublet-triplet splitting naturally in supersymmetric SO(10) grand unified theories. It is based on missing partner mechanism which realized with the 126 + 126-bar Higgs superfields. These fields, are also needed generating Majorana right-handed neutrino masses, contain pair of color triplets excess weak doublets. This feature enables us to remove from low energy spectrum without fine-tuning. give all ingredients successful implementation and explicit models wherein doublet mass protected against possible non-renormalizable corrections orders. show how realistic fermion masses can be generated this context.