FLAVOR CHANGING NEUTRAL CURRENTS IN SU(3)L⊗U(1)Y MODELS
نویسندگان
چکیده
منابع مشابه
Flavor Changing Neutral Currents
A study of Rb and Rc is presented in the context of a Two Higgs Doublet Model (2HDM) with flavor changing scalar currents (FCSC). Implications of the model for the ρ-parameter and for b → sγ are also considered. The experimental data on Rb places stringent constraints on the model parameters. The configuration of the model needed to account for Rb is found to be irreconcilable with constraints ...
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The measured value of Ab, the Zbb asymmetry parameter, disagrees with the Standard Model at 99% confidence level. If genuine the discrepancy could indicate new interactions unique to third generation quarks, implying enhanced Z penguin amplitudes. Enhanced rates are predicted for rare K and B decays, such as K → πνν, KL → π νν, B → Xsνν, and Bs → μμ. Measurements of ǫ /ǫ then imply QCD penguin ...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 1994
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732394001441