Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-03-26
Mod.Phys.Lett. A11 (1996) 2703-2714
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, Latex file
Scientific paper
10.1142/S0217732396002708
O(10) grand unification models which do not necessarily have an extra global symmetry are discussed, taking the model with one 10-plet in the Yukawa sector as an example. A strong correlation between mass ratios and CP is found. The mass relation $m_t/m_b=v_u/v_d$ is recovered when $G_W=0$; and another special relation $m_t/m_b=G_E/G_W$ appears when $v_d=0$, where $G_{E,W}$ are Yukawa coupling constants and $v_{u,d}$ are VEVs. To facilitate this discussion, a set of $O(10)$ $\gamma$- matrices is offered based on a physical representation of the spinors and that of the vector of the $SO(10)$ group. Flavor changing neutral currents in such models are also discussed.
Wu Dan-di
Wu Yue-Liang
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