2009/08/26 by A. Flores-Tlalpa, J. Montaño, J. Montano +3 · 1 citation
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.80.077301
published as Phys.Rev.D80:077301,2009 · 5 pages, 2 figures
arxiv created 2009/08/26 · openalex publication_date 2009/10/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The one-loop induced Z\ensuremath→gg\ensuremathγ and Z^\ensuremath'\ensuremath→gg\ensuremathγ decays are studied within the context of the minimal 331 model, which predicts the existence of new gauge bosons and three exotic quarks. It is found that the Z\ensuremath→gg\ensuremathγ decay is insensitive to the presence of the exotic quarks, as it is essentially governed by the first two families of known quarks. As to the Z^\ensuremath'\ensuremath→gg\ensuremathγ decay, it is found that the exotic quark contribution dominates and that for a heavy Z^\ensuremath' boson it leads to a \ensuremathΓ(Z^\ensuremath'\ensuremath→gg\ensuremathγ) that is more than 1 order of magnitude larger than that associated with \ensuremathΓ(Z^\ensuremath'\ensuremath→ggg). This result may be used to distinguish a new neutral Z^\ensuremath' boson from those models that do not introduce exotic quarks.