Communications in Physics 31
, 363-374 (2021)
INVESTIGATION OF THE FCNC PROCESSES IN THE 3-4-1-1 MODEL
D. T. HUONG, L. X. THUY, N. T. NHUAN AND H. T. PHUONG
We study the FCNC problems in 3-4-1-1 model in a way different from the previous work. The sources of FCNC at the tree-level in the 3-4-1-1 model come from both the gauge and scalar sectors. We show that the most stringently bound on the tree-level FCNC interactions comes from the meson oscillations. The lower bound on the new physics scale is imposed more tightly than in the previous work, Mnew >22TeV. On the allowed value domain of the new physical scale, we show that the contribution of the tree-level FCNC interactions to the Br(Bs -> μ+μ−) is
Keywords: Dark matter; standard model; models beyond the standard model.