$$B\rightarrow K^*\mu ^+\mu ^-$$ B → K ∗ μ + μ - optimised observables in the MSSM

A two - loop contribution to B s → μ + μ − at large tan β in the MSSM

We consider a two-loop contribution of Higgs-mediated penguin diagram to B(Bs → μ+μ−) at large tanβ in the MSSM, motivated by a recently proposed two-loop magnetic penguin diagrams by Chen and Geng [1]. Typically the two-loop diagram is a αs correction to the one-loop contributions. However the new contribution can dominate one-loop contributions in a region of parameter space where μ, At and A...

Dynamical μ and MSSM

We present the idea that the vacuum can choose one pair of Higgs doublets by making the μ parameter a dynamical field called massion. The massion potential leading to the dynamical solution is suggested to arise from the small instanton interaction when the gauge couplings become strong near the cutoff scale Ms or MP . One can construct supergravity models along this line. We also present an ex...

The MSSM without μ term

We propose a supersymmetric extension of the standard model which does not have a “μ” supersymmetric Higgs mass parameter. The matter content of the MSSM is extended with three additional chiral superfields: one singlet, an SU(2) triplet and a color octet, and an approximate U(1)R symmetry naturally guarantees that tanβ is large, explaining the top/bottom quark mass hierarchy. Unlike in the MSS...

Enhancement of B ( B̄ d → μ + μ − ) / B ( B̄ s → μ + μ − ) in the MSSM with Minimal Flavour Violation and Large tan β

Enhancement of B ( B̄ d → μ + μ − ) / B ( B̄ s → μ + μ − ) in the MSSM with Modified Minimal Flavour Violation and Large tan β