TY - JOUR AU - Huong, D. T. AU - Thuy, L. X. AU - Nhuan, N. T. AU - Phuong, H. T. PY - 2021/09/29 Y2 - 2024/03/29 TI - Investigation of the FCNC Processes in the 3-4-1-1 Model JF - Communications in Physics JA - Comm. Phys. VL - 31 IS - 4 SE - Papers DO - 10.15625/0868-3166/15893 UR - https://vjs.ac.vn/index.php/cip/article/view/15893 SP - 399 AB - <p>We study the FCNC problems <br />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, \(M_{new} &gt; 22\) TeV. On the allowed value domain of the new physical scale, we show that the contribution of the tree-level FCNC interactions to the BrB\(_s \rightarrow \mu^+ \mu^-)\) is negligible.<br /><br /></p> ER -