High-quality Peccei-Quinn symmetry from the interplay of vertical and horizontal gauge symmetriesLuca Di Luzio, Giacomo Landini, Federico Mescia and Vasja SusičEur. Phys. J. C, 86 1 (2026) 5DOI: https://doi.org/10.1140/epjc/s10052-025-15175-w