The electroweak mixing angle in unified gauge theories—the renormalisation effects
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A general analysis of the renormalisation corrections to the unification results for the coupling constants of strong and electroweak interactions is attempted. In particular, the effects of introducing an energy scale intermediate between the unification energy and the low-energy regions are studied and found to be important. This analysis is applied to unification schemes of both kinds, namely, unification at superhigh energies, and unification at accessible energies.
KeywordsElectroweak mixing angle neutral-currents grand unified gauge theories, renormalisation group equations energy-dependent coupling constants
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