$B_s^0-{\bar{B}}_s^0$ mixing and $b\to s$ transitions in isosinglet down quark model

Abstract

The recent observation of the mass difference in $B_s$ system seems to be not in complete agreement with the corresponding standard model value. We consider the model with an extra vector like down quark to explain this discrepancy and obtain the constraints on the new physics parameters. Thereafter, we show that with these new constraints this model can successfully explain other observed deviations associated with $b\to s$ transitions, namely, $B_s\to \psi \varphi$, $B\to K\pi$ and $B\to \varphi K_s$.

19 pages, 6 figures

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Cited by in corpus (4)

• Anatomy of New Physics in B-Bbar mixing
• Neutral Gauge Boson Contributions to the Dimuon Charge Asymmetry in B Decays
• Study of some B_s to f_0(980) decays in the fourth generation model
• Implication of Z-mediated FCNC on semileptonic decays $B_s\to \varphi l^{+}{l}^{-}$ and $B^{+}\to K^{+}{l}^{+}{l}^{-}$