Lepton flavor violating decays $l_j\to l_i\gamma$, $l_j\to 3l_i$ and $\mu \to e+q\bar{q}$ in the N-B-LSSM

Abstract

The N-B-LSSM is an extension of the minimal supersymmetric standard model (MSSM) with the addition of three singlet new Higgs superfields and right-handed neutrinos, whose local gauge group is $SU(3{)}_C\times SU(2{)}_L\times U(1{)}_Y\times U(1{)}_{B-L}$. In the N-B-LSSM, we study lepton flavor violating decays $l_j\to l_i\gamma$, $l_j\to 3l_i$ and $\mu \to e+q\bar{q}$ $(j=\tau ,\mu ,i=\mu ,e$ and $i\ne j)$. Based on the current experimental limitations, we carry out detailed parameter scanning and numerical calculations to analyse the effects of different sensitive parameters on lepton flavor violation (LFV) in the N-B-LSSM. The numerical results show that the non-diagonal elements involving the initial and final leptons are main sensitive parameters and LFV sources. This work can provide a strong basis for exploring new physics (NP) beyond the Standard Model (SM).

43 pages, 29 figures