Communications in Physics 31, 363-374 (2021)

ISSN: 0868-3166

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 negligible. Keywords: Dark matter; standard model; models beyond the standard model.

DOI: DOI:10.15625/0868-3166/15893

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