2015/10/31 by Stefano Bertolini, Luca Di Luzio, Helena Kolešová +3
Physics and Astronomy · #Axion #Computer network #Computer science #Dark Matter and Cosmic Phenomena #Dark matter #Dilaton #Interconnection #Neutrino #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Theoretical physics #hep-ph
paper · pdf · doi:10.1103/physrevd.93.015009
published as Phys. Rev. D 93, 015009 (2016) · 20 pages, 8 figures. To appear in Phys. Rev. D
arxiv created 2015/12/30 · openalex publication_date 2016/01/12 · arxiv updated 2016/01/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that a recently proposed framework that provides a simple connection between Majorana neutrinos and an invisible axion in minimal scalar extensions of the standard electroweak model can be naturally embedded in a classically scale-invariant setup. The explicit breaking of the scale invariance \`a la Coleman-Weinberg generates the Peccei-Quinn and electroweak scales. The spontaneous breaking of the chiral U(1)PQ triggers the generation of neutrino masses via Type-II seesaw and, at the same time, provides a dynamical solution to the strong CP problem as well as the axion as a dark matter candidate. The electroweak and neutrino mass scales are obtained via a technically natural ultraweak limit of the singlet scalar interactions. Accordingly, a realistic and perturbatively stable scalar spectrum, possibly in the reach of the LHC, is naturally obtained. A very light pseudodilaton characterizes such a setting. The vacuum stability of the extended setup is discussed.