Analysis Of B_sâ†'φμ~+μ~-decay With Supersymmetry

The Standard Model (SM) of elementary particle is a theory based on the gauge group of SU(3)c×SU(2)L×U(Y)γ, which purports to describe the strong and electroweak interactions of fundamental particles. During the past50years, it has survived assorted experimental tests extensively. However, the SM itself is not perfect, there exist some problems that have not yet been solved reasonably. Between experimental and theoretical results, there are still some discrepancies by and large. All these inconsistencies may indicate that the SM is not an ultimate theory, which will provide room for developing new physics beyond the SM. A key reason that physicists pay attention to heavy flavor physics, particularly to B physics, is the potential insight it offered into the physics of strong interactions. In particular,it is believed to be a good place to study phenomena such as CP violation, rare decays, and flavor changing neutral current processes with high precision. It will also provide proof of the existing signals of whatever theroy lies beyond the SM.Among those new physics models that survived electroweak data, one of the most respectable options is the Supersymmetry(SUSY). In this thesis, we first give a brief review on the SM, Minimal supersymmetric model, B mesons weak decays. Then, we study the effects of the RPV and RPC SUSY on the semi-leptonic B decay Bsâ†'φμ+μ-. We derive the new bounds on the relevant RPV coupling and RPC MIs form the latest experimental data, and some of these constraints are stronger than the existing bounds. The results obtained in this work will be very useful in searching supersymmetric signal at the LHC.