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I am reading Mukhanov's 'Physical Foundations of Cosmology'. He claims that in the minimal SU(5) model, CP violation of a heavy SU(5) gauge boson X decay arises at the tenth order of perturbation theory.
Is that correct? The tenth order perturbation theory would lead to a very complicated diagram and why one loop correction doesn't contribute?
Btw, what confuses me is on page 212.
Thanks
Is that correct? The tenth order perturbation theory would lead to a very complicated diagram and why one loop correction doesn't contribute?
Btw, what confuses me is on page 212.
Thanks