Theorem on vanishing contributions to ${\sin }^2{\theta }_W$ and intermediate mass scale in Grand Unified Theories with trinification symmetry

Chandini Dash, Snigdha Mishra, Sudhanwa Patra

We prove that the values of the electroweak mixing angle ${\sin }^2{\theta }_W$ and intermediate mass scale $M_I$ have vanishing contributions due to one-loop, two-loop and gravitational corr…