Program

O.17 -- Oral, NCTP-41

Date: Wednesday, 3 August 2016

Time: 11h10 - 11h30

Lepton flavor violating decays of Standard-Model-like Higgs in 3-3-1 model with neutral lepton

L.T. Hue (1), H.N. Long (1), T.T. Thuc(1), T. Phong Nguyen (2), D. T. Si (1)

(1) Institute of Physics, VAST, 10 Dao Tan, Ba Dinh, Hanoi, Viet Nam. (2) Department of Physics, Cantho University, 3/2 Street, Ninh Kieu, Cantho, Viet Nam.

The one loop contribution to the lepton flavor violating decay $h^0\rightarrow \mu\tau$ of the SM-like neutral Higgs (LFVHD) in the 3-3-1 model with neutral lepton (3-3-1LHN) is calculated using the unitary gauge. We will represent the particle spectrum and couplings relating with LFVHD decay process. Contributions of particular diagrams and divergent cancelation are shown. Based on numerical investigation, we show that the branching ratio of the LFVHD strongly depends on the Yukawa couplings between exotic leptons and $SU(3)_L$ Higgs triplets. \textbf{This ratio can reach $10^{-5}$ providing large Yukawa couplings and constructive correlations of the $SU(3)_L$ scale ($v_3$) and the charged Higgs masses}. The branching ratio decreases rapidly with the small Yukawa couplings and large $v_3$.

Presenter: Trương Trọng Thúc