An extension of the SM based on effective Peccei–Quinn Symmetry

2018/09/20 by Daijiro Suematsu
Physics and Astronomy · #Axion #Explicit symmetry breaking #Global symmetry #Mass generation #Neutrino #Neutrino Physics Research #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #Spontaneous symmetry breaking #Standard Model (mathematical formulation) #Strong CP problem #Symmetry (geometry) #Symmetry breaking #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-018-6370-3

25 pages, 2 figures, references added, figures correctly included

arxiv created 2018/09/20 · openalex created_date 2018/09/27 · openalex publication_date 2018/10/30 · arxiv updated 2018/11/14 · openalex updated_date 2026/08/05

Abstract

Peccei–Quinn (PQ) mechanism based on a chiral global U (1) symmetry is considered to be a simple and elegant solution for strong CP problem. The fact that the mechanism could be experimentally examined through the axion search makes it much more interesting and recently it causes a lot of attention again. However, it is also known that the mechanism is annoyed by two serious problems, that is, a domain wall problem and goodness of global symmetry. Any global symmetry is considered not to be exact due to the quantum effect of gravity. In this paper, we consider a solution to these problems, in which quark mass hierarchy and mixing, neutrino mass generation and existence of dark matter are closely related. In our solution, PQ symmetry is assumed to be induced through symmetry breaking at an intermediate scale of a local U(1) symmetry, and a global U(1) symmetry which plays a role of Froggatt–Nielsen symmetry . In the lepton sector, a remnant of the PQ symmetry controls neutrino mass generation and dark matter existence.

Citations

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• Minimal dark matter
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• Radiative neutrino mass model with degenerate right-handed neutrinos
• Extension of a radiative neutrino mass model based on a cosmological viewpoint
• Minimal axion model from flavor
• Accidental Peccei–Quinn symmetry from discrete flavour symmetry and Pati–Salam