Higher-Dimensional QCD without the Strong CP Problem

Abstract

QCD in a five-dimensional sliced bulk with chiral extra-quarks on the boundaries is generically free from the strong CP problem. Accidental axial symmetry is naturally present except for suppressed breaking interactions, which plays a role of the Peccei-Quinn symmetry to make the strong CP phase sufficiently small.

7 pages, latex

Cited by in corpus (24)

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• Natural Theories of Ultra-Low Mass PNGB's: Axions and Quintessence
• Strongly broken Peccei-Quinn symmetry in the early Universe
• A Holographic Perspective on the Axion Quality Problem
• Probing the Interactions of Axion-Like Particles with Electroweak Bosons and the Higgs Boson in the High Energy Regime at LHC
• Cosmologically safe QCD axion as a present from extra dimension
• Searching for axion-like particles with data scouting at ATLAS and CMS
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• Dynamics of Superconformal Axion: Quality and Scalegenesis
• Axion Quality Problem and Non-Minimal Gravitational Coupling in the Palatini Formulation
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• Dynamical Rearrangement of Theta Parameter in Presence of Mixed Chern-Simons Term
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• Qualities of axion and LSP in Pati-Salam unification with $Z_4^R\times Z_N$ symmetry
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