Xiao Zhen-Jun

B→Xsγ, Xsl+l− Decays and Constraints on Mass Insertion Parameters in MSSM

In this paper, we study the upper bounds on the mass insertion parameters (δqAB)ij in the minimal supersymmetric standard model. We found that the information from the measured branching ratio of B→Xsl+l− decay can help us to improve the upper bounds on the mass insertions parameters (δu,dAB)3j,i3. Some regions allowed by the data of Br(B→Xsγ) are excluded by the requirement of an SM-like C7γ(mb) imposed by the data of Br(B→Xsl+l−).

Constraints on Technicolor Models from Inclusive Decay of B Meson

Corrections to the branching ratio BR(B → Xsγ) from technipions and top pions appeared in technicolor models are investigated. We found that: (a) the multiscale walking technicolor model is ruled out since it is conflict with the CLEO data; (b) the topcolor-assisted technicolor model is consistent with the CLEO data of BR(B → Xsγ) for a certain range of parameters.

B → K0* (1430) K Decays in Perturbative QCD Approach

In this article, we calculate the branching ratios of

B→K0*(1430)KDecays in Perturbative QCD Approach

B \to K_0^*(1430) K

Exact Calculations of Vertex s̄γband s̄Zbin the Unitary Gauge

decays by employing the perturbative QCD (pQCD) approach at leading order. We perform the evaluations in the two scenarios for the scalar meson spectrum. We find that (a) the leading order pQCD predictions for the branching ratio

Exact Calculations of Vertex s̄γb and s̄Zb in the Unitary Gauge

Br(B^+ \to K^+ \bar{K_0^*}(1430)^0)

Exact Calculations of Vertex bar s?b and bar sZb in the Unitary Gauge

which is in good agreement with the experimental upper limit in both scenarios, while the pQCD predictions for other considered

Rare Decay

B \to K_0^*(1430) K

B\rightarrow X_s\nu\bar\nu

decay modes are also presented and will be tested by the LHC experiments; (b) the annihilation contributions play an important role in these considered decays, for

in the Two-Higgs-Doublet Model of Type-III

B^0 \to {K_0^*}(1430)^\pm {K}^\mp