Physical constraints derived from FCNC in the 3-3-1-1 model

Abstract We investigate several phenomena related to FCNCs in the $$\text {3-3-1-1}$$ 3-3-1-1 model. The sources of at tree-level from both gauge and Higgs sectors are clarified. Experiments on oscillation mesons most stringently constrain FCNCs. lower bound new physics scale is imposed more tightly than previous, {M}_{\text {new}}>12 $$ M new > 12 TeV. Under this bound, make a negligible contribution {Br}(B_s \rightarrow \mu ^+ ^-)$$ Br ( B s → μ + - ) , {Br}(B K^{*} K ∗ {Br}(B^{+}\rightarrow K^{+}\mu ^{+}\mu ^{-})$$ . branching ratio radiative decay $$b s \gamma b γ enhanced by $$\frac{v}{u}$$ v u via diagrams with charged mediation. In contrast, currents bosons significantly contribute process $$\mu e e