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arXiv · 1812.08174

Automatic Peccei-Quinn symmetry

M. B. Gavela·M. Ibe·P. Quilez·T. T. Yanagida
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Abstract

We present a dynamical (composite) axion model where the Peccei-Quinn (PQ) symmetry arises automatically as a consequence of chirality and gauge symmetry. The Standard Model is simply extended by a confining and chiral $SU(5)$ gauge symmetry. The PQ symmetry coincides with a $B-L$ symmetry of the exotic sector. The theory is protected by construction from quantum gravitational corrections stemming from operators with mass dimension lower than nine.

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M. B. Gavela, M. Ibe, P. Quilez, T. T. Yanagida. 2018-12-19. Automatic Peccei-Quinn symmetry. https://doi.org/10.1140/epjc%2Fs10052-019-7046-3

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