2021/07/18 by Pei-Hong Gu, Gu, Pei-Hong
Physics and Astronomy · #Axion #Cold Atom Physics and Bose-Einstein Condensates #Dark Matter and Cosmic Phenomena #Dark matter #FOS: Physical sciences #Gauge (firearms) #Gauge boson #Gauge symmetry #Gauge theory #Higgs boson #Higgs field #Higgs mechanism #High Energy Physics - Phenomenology (hep-ph) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #Spontaneous symmetry breaking #Standard Model (mathematical formulation) #Strong CP problem #Symmetry breaking #Top quark #hep-ph
paper · pdf · doi:10.48550/arxiv.2107.08549
published in arXiv (Cornell University) (Cornell University) · 5 pages
arxiv created 2021/07/18 · openalex publication_date 2021/07/18 · arxiv updated 2021/07/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose an efficient mechanism to realize an invisible axion from a low scale Peccei-Quinn symmetry breaking. Our basic model only contains a gauge boson, an up-type vector-like quark, two Higgs doublets and two Higgs singlets besides the standard model fermions and gauge bosons. The physical Peccei-Quinn global symmetry is a result of two independent global symmetries connected by the new gauge symmetry. Anyone of these two global symmetries only acts on either the right-handed top quark or the left-handed new quark so that it can avoid the domain wall problem. Thanks to the electroweak and new gauge interactions, the Higgs doublet for the top quark mass generation and the Higgs singlet for the new quark mass generation can only contribute a tiny fraction in the axion. The axion decay constant can be largely enhanced by a factor composed of the vacuum expectation values of the four Higgs scalars.