in BLMSSM
Jian-Bin Chen (College of Physics and Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China); Meng Zhang (College of Physics and Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China); Li-Li Xing (College of Physics and Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan 030024, China); Tai-Fu Feng (Department of Physics, Hebei University, Baoding 071002, China); Shu-Min Zhao (Department of Physics, Hebei University, Baoding 071002, China); et al - Show all 6 authors
Applying the effective Lagrangian method, we study the flavor changing neutral current process $b\to s\gamma$ within the minimal supersymmetric extension of the Standard Model, where baryon and lepton numbers are local gauge symmetries. Constraints on the parameters are investigated numerically with the experimental data for the branching ratio of $b\to s\gamma$ . Additionally, we present the corrections to direct CP-violation in $b\to s\gamma$ and time-dependent CP-asymmetry in $b\to s\gamma$ . With appropriate assumptions on the parameters, we find the direct CP-violation $b\to s\gamma$ is very small, while one-loop contributions to $b\to s\gamma$ can be significant.
