A non supersymmetric SO(10) grand unified model for all the physics below M GUT

Explicit so ( 10 ) Supersymmetric Grand Unified Model ∗

A complete set of Higgs and matter superfields is introduced with well-defined SO(10) properties and U (1) × Z 2 × Z 2 family charges from which the Higgs and Yukawa superpotentials are constructed. The Higgs fields solve the doublet-triplet splitting problem, while the structures of the four Dirac fermion mass matrices obtained involve just six effective Yukawa operators. The right-handed Majo...

Supersymmetric Grand Unified Models Without

We discuss two classes of supersymmetric grand unified theories based on extended gauge groups SO(10) × SO(10) and SO(10)× SO(10)× SO(10). Effective adjoint fields of each gauge group SO(10) are argued to be formed from combining two Higgs fields in fundamental representation of the extended gauge groups, one obtaining its VEV along the diagonal SO(10)D direction and the other acquiring its VEV...

Supersymmetric Grand Unified Theories and Yukawa Unification

Status of Supersymmetric Grand Unified Theories

We begin with a brief discussion of the building blocks of supersymmetric grand unified theories. We recall some of the compelling theoretical reasons for viewing supersymmetric grand unification as an attractive avenue for physics beyond the standard model. This is followed by a discussion of some of the circumstantial evidence for these ideas. Invited Speaker at the XII DAE Symposium on High ...

A Reexamination of Proton Decay in Supersymmetric Grand Unified Theories

We reconsider dimension–five proton decay operators, making semiquantitative remarks which apply to a large class of supersymmetric GUTs in which the short-distance operators are correlated with the fermion Yukawa couplings. In these GUTs, which include minimal SU(5), the operators (udi ) (djντ ), induced by charged Higgsino dressing, completely dominate for moderate to large tan β. The rate fo...