2002/09/30 by C. X. Yue, Chongxing Yue, Yanming Zhang +1
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1016/s0370-2693(02)02781-8
published as Phys.Lett. B547 (2002) 252-256 · Final version to appear in Phys. Lett. B. References added and typos corrected
arxiv created 2002/10/07 · openalex publication_date 2002/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z′, which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z′, predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models, to the lepton flavor-violation tau decays τ→ liγ and τ→ liljlk. We find that the branching ratio Br(τ\longrightarrow liljlk) is larger than that of the process τ\longrightarrow liγ in all of the parameter space. Over a sizable region of the parameter space, we have Br(τ\longrightarrow liljlk)∼ 10-8, which may be detected in the future experiments.