$${B_s^0}$$ B s 0 – $${\bar{B}}_s^0$$ B ¯ s 0 mixing within minimal flavor-violating two-Higgs-doublet models

B 0 s → K + K − and B 0 s → K 0 K̄ 0 Decays within Supersymmetry

We compute the supersymmetric (SUSY) contributions to the observables in B s → KK and B s → KK̄ decays. The hadronic parameters in the standard-model (SM) amplitudes are obtained from the B d → KK̄ decay using a recent approach that combines flavor SU(3) symmetry and a controlled input from QCD factorization. The latest experimental data for BR(B s → KK) is in agreement with the SM prediction. We...

B 0 s → D − s a + 1 decay channel in the B 0 s - mixing studies

B 0 s , d → ` + ` − Decays in the Aligned Two - Higgs - Doublet Model

The rare decays B0 s,d → `+`− are analyzed within the general framework of the aligned two-Higgs doublet model. We present a complete one-loop calculation of the relevant short-distance Wilson coefficients, giving a detailed technical summary of our results and comparing them with previous calculations performed in particular limits or approximations. We investigate the impact of various model ...

Towards Isolation of New Physics in B 0 s - B 0 s Mixing

In many extensions of the standard model, new physics is possible to contribute signi cantly to B s B s mixing. We show that the e ect of new physics, both its phase information and its magnitude, can be isolated from measurements of CP asymmetries in the semileptonic Bs transitions and in some nonleptonic Bs decays into hadronic CP eigenstates. We also nd that the rates of CP -forbidden decays...

Time Dependent B 0 s − B 0 s Mixing Using Inclusive

We set a preliminary 95% C.L. exclusion on the oscillation frequency of B 0 s − B 0 s mixing using a sample of 400,000 hadronic Z 0 decays collected by the SLD experiment at the SLC between 1996 and 1998. The analyses determine the b-hadron flavor at production by exploiting the large forward-backward asymmetry of polarized Z 0 → bb decays as well as information from the hemisphere opposite tha...