Abstract
We study phenomenological constraints on the simple 3-3-1 model with flavor-violating Yukawa couplings. Both Higgs triplets couple to leptons and quarks, which generates flavor-violating signals in both lepton and quark sectors. We have shown that this model allows for a large Higgs lepton flavor-violating rate decay h rightarrow mu tau and also may reach perfect agreement with other experimental constraints such as tau rightarrow mu gamma and (g-2)_mu . The contributions of flavor-changing neutral current couplings, Higgs–quark–quark couplings, mixing to the mesons are investigated. Br(h rightarrow q q^prime ) can be enhanced acknowledging the measurements of meson mixing. The branching ratio for t rightarrow q h can reach up to 10^{-3}, but it could be as low as 10^{-8}.
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