Nonrenormalization of phases, softly broken Peccei-Quinn symmetry, and strong-CPproblem
- 1 July 1985
- journal article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 32 (1) , 293-299
- https://doi.org/10.1103/physrevd.32.293
Abstract
We present a class of gauge models where the phase angle associated with a parameter that breaks a U(1) global symmetry softly receives no renormalization correction due to quantum effects. As application of this idea, we consider recently proposed solutions to the strong-CP problem using softly broken Peccei-Quinn symmetry and clarify the conditions under which it works. We also extend our discussion to some new models.Keywords
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