Natural class of non-Peccei-Quinn models
- 1 October 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 30 (8) , 1805-1811
- https://doi.org/10.1103/physrevd.30.1805
Abstract
We discuss a class of models, not based on the Peccei-Quinn mechanism, that solve the strong problem. These are a generalization of a model of Nelson. Improved conditions are given for such models. These conditions are natural and in many simple models are automatically satisfied.
Keywords
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