Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-07-23
Phys.Lett.B661:268-272,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
v2: discussion about gauge coupling unification extended; figure added; to appear in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2008.02.022
The breaking of SO(10) to SU(3)_C x U(1)_EM can be accomplished by just four Higgs fields: the symmetric rank-two tensor, S(54); a pair of spinors, C(16) and Cbar(16bar); and a vector, T(10). This setup is also able to generate realistic fermion masses. The heavy color triplets in the vector and spinor fields mediate proton decay via dimension-five operators. The experimental bounds on proton decay constrain the structure and size of the Yukawa operators.
Wiesenfeldt Soren
Willenbrock Scott
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